Walter Herbert Gerstle
January 2008
Personal
Work Address
Dept. of Civil Engineering
Phone:
(505)277-3458, FAX (505)277-1988
Email:
URL: http://www.unm.edu/~gerstle/
Personal Data
Born
in
Citizen
of
Married;
one child
Education
Doctor
of Philosophy Degree, January, 1986; School of Civil and Environmental
Engineering,
Master
of Science Degree, May, 1982; School of Civil and Environmental Engineering,
Bachelor
of Science Degree, "With Special Honors", May, 1978; Department of
Civil and Environmental Engineering, University of Colorado, Boulder, CO
Career Experience
2007-2008:
On sabbatical leave at National Institute of Standards and Technology and at
Sandia National Laboratories
Summer,
2003: Contractor, Sandia National Laboratories,
1999-present:
Professor, Department of Civil Engineering,
1992
- 1999: Associate Professor; Department of Civil Engineering,
1986
- 1992: Assistant Professor, Department of Civil Engineering,
1993-1994:
Academic Year on Sabbatical Leave, Contractor at Sandia National Laboratories:
Summer,
1991:AFOSR Summer Faculty Fellow, Phillips Laboratory,
Summer,
1989: NASA/Langley Summer Faculty Fellow, NASA/Langley,
1985-1986:
Member of Technical Staff, Sandia National Laboratories,
1980-1985:
Teaching and Research Assistant,
Summer,
1984: Contractor, Lawrence
1979-1980:
Architectural Engineer, Richard Weingardt Consultants, Denver, CO
1978:
Architectural Engineer, W. L. Simons and Associates, Lakewood, CO
Summer,
1977: Assistant Engineer, Surveyor, Zoyiopoulos and Associates, Greeley, CO
Activities in Professional Societies
American
Society of Civil Engineers: Member 1978-present
President,
Member
National Committee 447, "Finite Element Analysis of Reinforced Concrete
Structures"
Member,
ASCE/EMD Committee on Properties of Materials, 1996-present
Associate
Editor, ASCE Journal of Structural Engineering, 1996-1999
Book
Review Editor, ASCE Journal of Structural Engineering, 2000-present
State
Board Member, 1989-1990
American
Concrete Institute: Member 1986-present;
Chair
Committee 446 "Fracture Mechanics", 2008-present
Fellow,
2002-present
Chair
Committee 446 "Fracture Mechanics", 1998-2006
Secretary
National Committee 446, "Fracture Mechanics" 1993-1998
Chair
National Subcommittee 446-III "Finite Element Analysis", 1992-1998
American
Society for Testing of Materials: Member 1986-95
Member National Committee E-24, "Fracture
Mechanics"
Society
for Experimental Mechanics: Member 1989-1994
National
Society for Professional Engineers: Member 1986-present
Member
New Mexico Section calling committee 1987-1995
Engineering
Societies Presidents Council: Member, 1989-1990
Chi
Epsilon Honorary Fraternity: Member 1978-present; Faculty Advisor: 1997-2001
Sigma
Xi: Member 1994-present;
UNM
Chapter Sigma Xi President, 2003 - 2006
UNM
Chapter Sigma Xi President-Elect, 2002 - 2003
UNM
Chapter Sigma Xi Secretary 2000-2002
UNM 21 Club: 2003 -
present
Awards and Honors
Fellow,
American Concrete Institute, 2002-present
Commendable
Poster Award for "Gas-Driven Hydrofracture at WIPP", Hazardous
Substance Research Center/Waste Management Education and Research Consortium
Joint Conference on the Environment, May 21-23,
Received
Associated Western Universities Fellowship to fund one-third of 1993-1994
sabbatical leave at Sandia National Laboratories.
Tom
Popejoy Society,
Presidential
Young Faculty Award,
Judge
for
Registered
Professional Engineer in
Graduate
student, Ming Xie, won Outstanding Graduate Student in Civil Engineering
Department, 1991
Honorable
mention, best journal paper during one year period (June 1991 - June 1992),
ASCE Journal of the Aerospace Division (see publication list for reference).
Structural
Engineers Association of Illinois 2008 Publication Award of Merit, for ACI
Structural Journal paper “Justification of ACI 446 Proposal…” (see publication
list for reference).
Funded UNM Research Projects
“Near
Earth Space Surveillance Initiative”, funded by Air Force Research Laboratory
(John McGraw, PI), 10/30/2004 - present
“Long
Wavelength Array”, funded by Naval Research Laboratory (Greg Taylor and Jack
McIver co-PIs), 10/30/2006 - present
“Long
Wavelength Demonstration Array”, funded by Applied Research Laboratory, UT
Austin (
“Analysis
of Surface Vibrations Resulting from Machinery in Buildings – Phase III”,
funded by Sandia National Laboratories, $102,246, 2/15/2006 – 10/30/2006.
“Analysis
of Surface Vibrations Resulting from Machinery in Buildings – Phase II”, funded
by Sandia National Laboratories, $54,111, 2/15/2005 – 2/15/2006 (with Tim Ross,
Co-PI).
“Analysis of Surface Vibrations Resulting from
Machinery in Buildings”, funded by Sandia National Laboratories, $134,207,
11/21/2003 – 11/15/2004 (with Tim Ross, Co-PI).
“Solar Rack Design Software – Phase II”,
funded by UniRac, Inc., $10,841, 7/14/03 – 12/19/03.
“Solar
Rack Design Software”, funded by UniRac, Inc., $10,806, 2/03-7/14/03.
"Cellulose-Earth
Material for Rural Homes", SANCO Enterprises, SBIR proposal funded by the
USDA, $17,880, 5/99-11/99.
"Data
Models and Formats Research", funded by Sandia National Laboratories,
$40,000, 2/16/1999-1/31/2000.
"Finite
Element Meshing Approached as a Global Minimization Process- Phase III",
funded by Sandia National Laboratories, $50,000, 11/1998 - 10/1999.
"Deployable
Space Structure Research", funded by Air Force Research Laboratory,
$492,646, 12/1997-2/2001.
"Finite
Element Meshing Approached as a Global Minimization Process- Phase II",
funded by Sandia National Laboratories, $50,000, 11/1997 - 10/1998.
"Research
Experiences for Undergraduates in Civil Engineering", NSF, $65,155.,
5/1997-8/1997, (with Tim Ross, Co-PI, Grant No. EEC-9322063, Amendment 003).
"Finite
Element Meshing Approached as a Global Minimization Process", funded by
Sandia National Laboratories, $70,000., 11/1996 - 10/1997.
"Design
and Implementation of a Virtual Geometry Interface", funded by Sandia
National Laboratories, $18,000., 9/1996 - 5/1997.
"Approximate
Finite Element Meshing using Fuzzy Surface Tessellation", funded by
Autonomous Control in Engineering Center, (NASA), 1995-1999, (with Tim Ross),
approximately $150,000. per year for five years.
"Development
of Waste Gas Pressure Relief Mechanism for Waste Isolation in Salt Beds",
DOE/WERC, $90,000., 7/1996 - 6/1997, PI, (with Lary Lenke, Co-PI).
"Prediction
of Combined Smeared and Discrete Mechanisms in WIPP Rock Salt - Phase II",
DOE/WERC, $61,000., Feb. 1994 - Aug. 1995., PI, (with Zhen Chen, Co-PI)
"
Research Experiences for Undergraduates in Civil Engineering ", NSF,
$155,849., 1994-1997, (with Tim Ross, Co-PI, Grant No. EEC-9322063).
"Gas-Driven
Hydrofracture at WIPP", Sandia National Laboratories, $27,301.,
12/93-12/94.
"Crack
Width and Spacing in Reinforced Concrete", UNM Research Allocation Committee,
$1,900., April 20, 1993-Sept. 30, 1993.
"Research
Education for Undergraduates", NSF, $39,923., 1993-1994, (with Tim Ross,
Co-PI, Grant No. EEC-9300952).
"Prediction
of Combined Smeared and Discrete Mechanisms in WIPP Rock Salt - Phase I",
DOE/WERC, $60,000., Feb. 1993 - Aug. 1994., PI, (with Zhen Chen, Co-PI).
"Basic
Ordering Agreement", PI, Re/Spec, Inc., 1990-open,
Task 1 $3,200. (8-90 to 2-91)
Task 2 $2,600. (5-91 to 7-91)
"Research
Education for Undergraduates", NSF, $38,555., 1991-1992, (Co-PI with Tim
Ross, PI, Grant No. EID-9100822) .
"Research
Education for Undergraduates", NSF, $35,172., 1990-1991, (Co-PI with Tim
Ross, PI, Grant No. 9000744)
"NASA
Lunar Observatory Project", PI, NASA, $17,000., 1990-1991, (with K-M.
Chua, Co-PI,
"A
New Integrated, Computer Graphical Design Tool- Phase II", PI, NSF
$110,000., 1989 to 1991, (SBIR with Re/Spec, Inc.)
"General-Purpose
Postprocessing System" ARCO Oil Company, PI, $11,000., 1990-1991,
(Subcontract with Re/Spec, Inc.)
"Finite
Element and Boundary Element Modeling of Crack Propagation in Three-Dimensional
Structures", NSF, PI, $56,000., 1987-1990, (Grant No. MSM-8706409)
"Development
of an Automated 3-D Finite Element Mesh Generator -Phase II", Sandia National
Laboratories, PI, $30,000., 1988-1989
"Prototype
Integrated Interactive Graphical Analysis Software System", ARCO Oil
Company, PI, $18,750., 1988-1989, (Re/Spec, Inc. Subcontract)
"Development
of an Automated 3-D Finite Element Mesh Generator", Sandia National
Laboratories, PI, $30,000., 1987-1988.
"A
New Integrated, Computer Graphical Design Tool", NSF, PI, $16,501., 1988,
(SBIR with Re/Spec, Inc.)
Consulting Contracts (smaller consulting projects not listed)
“Expert Witness” several projects as expert
witness on structural failures.
"Structural
Analysis of Telescopes", DFM Engineering, Inc., Longmont, CO., ongoing
structural consulting.
“Support
Structures for Solar Panels” UniRac, Inc., ongoing structural consulting.
“Structures
for Solar Arrays” Array Technologies, Inc., ongoing structural consulting.
"Investigation
of Deformations and Stresses in Stainless Steel Pool Liner for
"Hydrofracture
Behavior of WIPP", Environmental Evaluation Group,
"Hydrofracture
Modeling of WIPP", The Hydrodynamics Group, La Honda, CA., 8/1/97-10/1/97.
"Fracture
Analysis of the
"Structural
Analysis of Laser Beam Director", DFM Engineering, Inc., Longmont, CO.,
12/5/91-1/15/92.
"Numerical
Fracture Analysis of Grouted Joints for Nuclear Waste Isolation", Swedish
Nuclear Agency, PI, 1988-1989, (consulting subcontract to Re/Spec, Inc.)
Publications in Refereed Archival Journals and Refereed Special
Publications:
(Graduate Student
Coauthors for whom Gerstle served as Advisor are Highlighted)
(Graduate Student
Coauthors for whom Gerstle served as Advisor are Bold)
Disc. 104-S57 /
From the Sept.-Oct. 2007 ACI Structural Journal, p. 602
Bazant,
Z.P., Yu, Q., Gerstle, W., Hanson, J., and Ju, J. W., “Justification of ACI 446
Proposal for Updating ACI Code Provisions for Shear Design of Reinforced
Concrete Beams Discussion Closure” ASCE Structural Journal, Vol. ?, No. ?, pp. ?,
?. 2007.
Bazant,
Z. P., Yu, Q., Gerstle, W., Hanson, J., and Ju, J., “Justification of ACI-446
Proposal for Updating ACI Code Provisions for Shear Design of Reinforced
Concrete Beams”, ASCE Structural Journal, Vol. 104., No. 5, pp. 601-610,
Sept.-Oct. 2007.
Gerstle,
W., and Sau, N., and Silling, S. "Peridynamic Modeling of Concrete
Structures", Journal of Nuclear Engineering and Design, No. 237, pp.
1250-1258, 2007.
Gerstle,
W., "Book Review: Two Handbooks on Structural Steel Design", J.
Structural Engng., ASCE, Vol. 129, No. 6, p. 842, June 2003.
Gerstle,
W., “Toward a Meta-Model for Computational Engineering”, Engineering with
Computers, Vol. 18, Issue 4, pp 328-338, Springer-Verlag, London, 2002.
Sahu,
R., Panthaki, M., and Gerstle, W.,
"An Object-Oriented Framework for Multidisciplinary, Multi-Physics,
Computational Mechanics", Engineering with Computers, Vol.15, pp. 105-125,
Springer-Verlag,
Gerstle,
W., Lenke, L., and Heo, G., "Stress-Intensity Factor Calibration of
Edge-Notched Beam", Fatigue and Fracture Mechanics, ASTM STP 1296, West
Conshohocken, PA, pp. 530-549, 1997.
Gerstle,
W., "Book Review: Fracture Mechanics of Concrete: Applications of Fracture
Mechanics to Concrete, Rock, and other Quasi-Brittle Materials", J.
Structural Engng., ASCE, Vol. 122, No. 11, Nov. 1996, pp. 1390-1391.
Gerstle,
W., Xie, M., Liu, Q., and Chen, Z., "Gas-Driven Cracking in
WIPP Rock Salt", Radioactive Waste Management and Environmental
Restoration, Vol. 20, pp. 93-110, 1996.
Xie,
M., and Gerstle, W.,
"Energy-Based Cohesive Crack Propagation Modeling" J. Engng.
Mechanics, ASCE, Vol. 121, No. 12, 1995.
Xie,
M., Gerstle, W., and Rahulkumar,
P., "Energy-Based Automatic Mixed-Mode Crack Propagation
Modeling" J. Engng. Mechanics, ASCE, Vol. 121, No. 8 1995.
Xie,
M., Gerstle, W., and Chen, Z.,
"Finite Element Analysis of Combined Smeared and Discrete Mechanisms in
Rock Salt", Computer Methods and Advances in Geomechanics, Vol II,
Siriwardane, H.J. and Zaman, M.M. Eds., A. A. Balkema, pp. 1659-1664, 1994.
Gerstle,
W., Prasad, N. N. V. and Xie, M., "Solution Method for
Elastostatic Coupled BEM and FEM Analysis", Proc. Boundary Element
Technology VII, Brebbia and Ingber, Eds., Elsevier Applied Science,
Computational Mechanics Publications, 1992, pp. 213-226.
Gerstle,
W., Rahulkumar, P., Dey, P. P. and Xie, M., "Size
Effect in Reinforced Flexural Members", ACI SP-134 "Design Based on
Fracture Mechanics", Gerstle and Bazant, Eds., 1992, pp. 25-45.
Gerstle,
W., Dey, P.P., Prasad, N.N.V., Rahulkumar, P., and Xie, M.,
"Crack Growth in Flexural Members- A Fracture Mechanics Approach",
ACI Structural Journal, Vol. 89, No. 6, pp. 617-625, Nov., 1992.
Gerstle,
W. and Xie, M., "FEM Modeling of Fictitious Crack Propagation in
Concrete", ASCE Journal of Engineering Mechanics, Vol. 118, No. 2, 1992.
Akgul,
F., Gerstle, W. H. and Johnson, S.
W., "Structural Design of Lunar Radio Telescope Using Interactive
CAD", J. Aerospace Engineering, ASCE, Vol. 5, No. 1, Jan, 1992.
Gerstle,
W. and Ingraffea, A., "Does Bond-Slip Exist?", Concrete
International, American Concrete Institute, Vol. 13, No. 1, pp. 44-48, Jan.
1991.
Gerstle,
W., and Ingraffea, A., "Compliance and Stress-Intensity Factor Calibration
of the CENRBB Specimen Using the Boundary Element Method", International
Journal of Rock Mechanics and Mining Sciences, Vol. 28 No. 1, Jan. 1991.
Gerstle,
W. H. and Abdalla, J., E. "Finite Element Meshing Criteria for
Crack Problems," Fracture Mechanics: Twenty-First Symposium, ASTM STP
1074, J.P. Gudas, et al., Eds., American Society for Testing and Materials,
Johnson,
S., Burns, J., Chua, K.-M., Duric, N., Gerstle, W. and Taylor, J., "Lunar
Astronomical Observatories: Design Studies", Journal of Aerospace
Engineering, ASCE, Vol. 3, No. 4, pp. 211-222, Oct. 1990.
Gerstle,
W., Ingraffea, A., Perucchio, R., "Three-Dimensional Fatigue Crack
Propagation Analysis Using the Boundary Element Method," International
Journal of Fatigue, Vol. 10, No. 3, pp. 189-192, 1988.
Gerstle,
W., Martha, L., Ingraffea, A., "Finite and Boundary Element Modeling of
Crack Propagation in Two and Three Dimensions," Engineering with
Computers, Vol. 2, pp. 167-183, 1987.
Ingraffea,
A. R., Gerstle, W. H., Mettam, K. I., Wawrzynek, P., and Hellier, A. K.,
"Cracking of Welded Crane Runway Girders: Physical Testing and Computer
Simulation", Iron and Steel Engineer, December 1985, pp.46-52.
Ingraffea,
A. R., Gerstle, W. H., Gergely, P., and Saouma, V., "Fracture Mechanics of
Bond in Reinforced Concrete", Journal of the Structural Division, American
Society of Civil Engineers, Vol. 110, No. 4, April 1984, pp. 871-890.
Ingraffea,
A. R., Perrucchio, R., Han, T.-Y., Gerstle, W. H., and Huang, Y.-P.,
"Three-Dimensional Finite and Boundary Element Calibration of the
Short-Rod Specimen", Chevron-Notched Specimens: Testing and Stress
Analysis, ASTM STP 855, J. H. Underwood, et al., Eds., American Society for
Testing and Materials, Philadelphia, 1984, pp. 49-68.
Books Edited
Gerstle,
W. and Bazant, Z., Editors, "Concrete Design Based on Fracture
Mechanics", ACI SP-134, 1992.
Conference and Symposium Proceedings
(* indicates refereed
paper; Names of Graduate Students for whom Gerstle served as Advisor are Highlighted)
Silling,
S.A., Demmie, P.N, Foster, J. T., Gerstle, W., Warren, T. L., "Concrete
Fracture and Failure Modeling with Peridynamics"Workshop on Modeling
Concrete under High-Impulsive Loadings", Institute for Advanced
Technology, University of Texas at Austin
Austin, TX 2007.
*Gerstle,
W.,Sau, N., and Aguilera, E.,, "Micropolar Peridynamic
Constitutive Model for Concrete", 19th Intl. Conf. on Structural Mechanics
in Reactor Technology (SMiRT 19), Toronto, Canada, August 12-17, pp. B02/1-2,
2007.
*Gerstle,
W. H., Sau, N., and Aguilera, E., "Micropolar Modeling of
Concrete Structures", Proceedings of the Sixth International Conference on
Fracture Mechanics of Concrete Structures, Ia-FRAMCOS,
McGraw,
J. T., Ackermann, M. R., Williams, T., Zimmer, P.C., Gerstle, W. H., Benedict,
G. F., Odewahn, S. C., Wetterer, C. J., Gamiz, V. L., Claver, C. F.,
Pier, J. R., Hines, D. C., Schwarz, J., and the NESSI/CTI-II Research
Group. "The Quest for Precision Ground-Based Astronomy: The CCD/Transit
Instrument with Innovative Instrumentation (CTI-II)", Proc. American
Astronomical Society Convention,
Ray,
York, Kerkhoff, Slack, Copeland, Munton, Banks, Gaussiran, Hicks, Paravastu,
Kassim, Weiler, Polisensky, Crane, Gerstle, Pihlstrom, Taylor, Ellingson,
"First Light for the Long Wavelength Development Array", Proc.
American Astronomical Society Convention, Seattle, 5-10 January 2007.
McGraw,
J. T., Ackermann, M. R., Williams, T., Zimmer, P.C., Gerstle, W. H., Benedict,
G. F., Odewahn, S. C., Charles J. Wetterer, C. J., Gamiz, V. L., Golden,
E., Claver, C. F., Pier, J. R., Hines, D. C., and the NESSI/CTI-II
Research Group. "The Quest for Precision Ground-Based Astronomy: The
CCD/Transit Instrument with Innovative Instrumentation (CTI-II)", Proc.
Advanced Maui Optical and Space Surveillance Technologies Conference,
*Gerstle,
W. H., Roybal ,F., McGraw, J. T. and Williams, T. "Structural
Design of a Unique Passive Telescope," Proceedings of ASCE Earth and Space
2006 Conference, March 6-8,
*Gerstle,
W., Sau, N., and Silling, S., "Peridynamic Modeling of Plain and
Reinforced Concrete Structures", 18th Intl. Conf. on Structural Mechanics
in Reactor Technology (SMiRT 18), Atomic Energy Press, Beijing China, August
7-12, 2005.
McGraw,
J. T., Benedict, G. F., Ackermann, M. R., Zimmer, P. C., Williams, T., Gerstle,
W., Wetterer, C. J., Golden, E., and the
*Gerstle,
W. and Sau, N., “Peridynamic Modeling of Concrete Structures”,
Proceedings of the Fifth International Conference on Fracture Mechanics of
Concrete Structures, Li, Leung, Willam, and Billington, Eds., Ia-FRAMCOS, Vol.
2, pp. 949-956, 2004.
McGraw, J. T. ,
Ackermann, M. R. , Gerstle, W. , Williams, W. T., Benedict, G. F, Wetterer, C.
J., “Strip
Mining the Sky: The CTI-II Photometric and Astrometric Survey”, poster
presented at the American Astronomical
Society Convention, Minneapolis, MN, May 29-June 2, 2005.
*Gerstle,
W. and Sau, N., “Peridynamic Modeling of Concrete Structures”,
Proceedings of the Fifth International Conference on Fracture Mechanics of
Concrete Structures, Li, Leung, Willam, and Billington, Eds., Ia-FRAMCOS, Vol.
2, pp. 949-956, 2004.
Gerstle,
W., and Cheng, P.-Y. “Constructive Topological Domain Modeling for
Computational Engineering”, Proc. 7th
*Gerstle,
W., and Cheng, P.-Y. “Constructive Topological Domain Modeling for
Solution of Problems with Moving Boundaries”, Moving Boundaries VII, Eds. A.A.
Mammoli and
Desjarlais,
L.M., Tang, J., Akbarzadeh-T.,
M.-R., Gerstle, W., Panthaki, M., and Sahu, R., "Applying the
SoftLab/CoMeT Integrated Environment for Simulation and Control of
Distributed-Parameter Systems", Abstract for WAC 2000.
Gerstle, W., Panthaki, M., Sahu, R., Desjarlais, L.,
"Software Architecture of a Computational Mechanics Toolkit",
Abstract for WAC 2000.
Gerstle, W.H., Panthaki, M.J., and Sahu, R., "CoMeT: A
Framework for Team-Based, Multiphysics Computational Mechanics",
Proceedings 5th U.S. National Congress on Computational Mechanics, University
of Colorado, Boulder, Colorado, Aug. 4-6, 1999, pp. 235-236.
Gerstle,
W., Marker, D., and Panthaki, M., "A Software Environment for Simulation
of Deployable Optical Membrane Telescope Mirrors", 1998 Optical Society of
America ILS-XIV: 14th Interdisciplinary Laser Science Conference Program p.
159, Baltimore, Maryland, Oct. 4-9, 1998.
Gerstle,
W., Panthaki, M., Sahu, R., and Funston, M., "Software Framework
for Simulation of Adaptive Optical Membrane Telescope", Proceedings, World
Automation Congress 1998, May 9-14, Anchorage Alaska, TSI Press, NASA ACE
Center, (on CD and in Hard Copy), 1998.
Funston,
M. G., Gerstle, W., and Panthaki,
M., "Quantity, Revisited: An Object-Oriented Reusable Class",
Proceedings of
Valerio,
R. and Gerstle, W., "Finite
Element Modeling of Crack Propagation - A Practical View", Proceedings of
Valerio,
R., and Gerstle, W.,
"Discussion of Gas-Driven Hydrofracture Scenario at WIPP" NM J. of
Science, New Mexico Academy of Science, Vol. 37, Nov. 1997, pp. 203-218.
Gerstle,
W. and Valerio, R., "Vertically-Oriented Gas-Driven Hydrofracture
at WIPP" proceedings of WM '98 Conference,
Gerstle,
W., and Valerio, R. "Gas-Driven Hydrofracture Scenarios at
WIPP", Proceedings of the WERC/HSRC Joint Conference on the Environment,
Albuquerque, NM, March 31-April 1, WERC Administrative Office, NM State
University, pp. 333-335, 1998.
Sahu,
R., Gerstle, W. H., and Panthaki, M.
J., "CoMeT - An Object-Oriented Framework for Computational
Mechanics" Proc. 4th U.S. National Congress on Computational Mechanics,
Aug. 6-8, 1997, Scientific Computation Research Center, Rensselaer Polytechnic
Institute, Troy, N.Y., p. 205.
Gerstle,
W. H., Sahu, R., and Panthaki, M. J., "A Platform for Computational
Fracture Mechanics" Proc. 4th U.S. National Congress on Computational
Mechanics, Aug. 6-8, 1997, Scientific Computation Research Center, Rensselaer
Polytechnic Institute, Troy, N.Y., p. 296.
*Jung,
J., Dohrmann, C., Witkowski, W., Wolfenbarger, P., Gerstle, W., Mitchell,
S., Panthaki, M., and Segalman, D., "A Global Optimization Approach to
Quadrilateral Meshing", 6th International Meshing Roundtable, Park City,
Utah, Oct. 13-15, Sandia National Laboratories, Albuquerque, NM, 1997, p. 155.
*Gerstle,
W., Jung, J., Witkowski, W., Panthaki, M., "Use of Boundary Integral
Method to Determine Local Characteristic Feature Size of Geometric
Domains", 6th International Meshing Roundtable, Park City, Utah, Oct.
13-15, Sandia National Laboratories, Albuquerque, NM, 1997, p. 157-167.
*Panthaki,
M., Sahu, R., and Gerstle, W., "An Object-Oriented Virtual Geometry
Interface", 6th International Meshing Roundtable, Park City, Utah, Oct.
13-15, 1997, Sandia National Laboratories, Albuquerque, N.M., pp. 67-81.
*Malanthara,
A., and Gerstle, W., "Comparative Study of Unstructured Meshes Made of
Triangles and Quadrilaterals", 6th International Meshing Roundtable, Park
City, Utah, Oct. 13-15, 1997, Sandia National Laboratories, Albuquerque, N.M.,
pp. 437-447.
*Valerio,
R., Gerstle, W., Lenke, L., and Sandoval, L. "Waste-Gas Venting
Mechanisms at WIPP", WERC HSRC Proceedings of the 1997 Joint Conference on
the Environment, Albuquerque, NM, April 22-24, 1997, pp.534-539.
*Funston,
M. G., Valerio, R., and Gerstle, W., "Creation of Quantity: An Object-Oriented
Reusable Class", Proceedings of
*Sahu,
R., Panthaki, M.J., and Gerstle, W., "CoDE - An Environment for
Multi-Developer Software Development", Proceedings of
*Atencio,
L., Gerstle, W., Panthaki, M., and Sahu, R., "Object-Oriented
Design and Development of a Computational Mechanics Toolkit", Proceedings
of
*Malanthara,
A., Panthaki, M., Gerstle, W., and Sahu, R., "Object-Oriented
Design of a Drawing Subsystem For a Computational Mechanics Toolkit",
Proceedings of
Gerstle,
W., Xie, M., Liu, Q., and Chen, Z., "Prediction of Gas-Driven
Hydrofracture at WIPP", Proceedings of the 5th Annual Waste Management
Education and Research Technology Development Conference, Las Cruces, New
Mexico, April 18-20, 1995, WERC Administrative Office, New Mexico State
University, pp. 442-451.
Chen,
Z. and Gerstle, W., "Prediction of Combined Smeared and Discrete Cracking
Mechanisms", MEET'N93, Proc. of the First SES-ASME-ASCE Joint Meeting,
Charlottesville, Virginia, June 6-9, 1993, C.T. Heravich and J.M. Duva, Eds.,
University of Virginia Press, p. 100, 1993.
Gerstle,
W. and Xie, M., "Numerical Analysis of Discrete Nonlinear Fracture
Mechanics", ASCE Proc. 9th Engng. Mech. Conf., College Station, Tx.,
Lutes, L. D. and Niedzwecky, J. M., Eds., ASCE, pp. 784-787, 1992.
Gerstle,
W., Dey, P. P., Rahulkumar, P. and Xie, M., "Size Effect in
Bending Failure of Reinforced Concrete Beams", Proc. 1st Intl. Conf. on
Fracture Mechanics of Concrete Structures, Fracture Mechanics of Concrete
Structures, Z. P. Bazant, Ed., Elsevier Applied Science, N. Y., 1992, pp.
729-734.
*Gerstle,
W., Prasad, N.N.V., Cessac, K. and Kratochvil, T., "Preliminary
Design of a Lunar 16 Meter Optical Telescope", Proc. 3rd International
Conference on Engineering, Construction and Operations in Space, Sadeh, Sture
and Miller, Eds., ASCE, 1992, pp. 2305-2316.
Xie,
M., Gerstle, W. H., and Panthaki, M.
J., "Fracture Analysis of Cementitious Seals for Nuclear Waste
Isolation," ECF 8 Fracture Behaviour and Design of Materials and
Structures, Proceedings of the Eighth Biennial European Conference on Fracture,
October, 1990, Torino, Italy, pp. 786 - 791.
*Gerstle,
W., and Ingraffea, A, "Does Bond-Slip Exist?", Proceedings of
International Conference on Micromechanics of Failure of Quasi-Brittle
Materials, Elsevier Applied Science, June, 1990,
*Akgul,
F., Gerstle, W., and Johnson, S., "Computer Aided Analysis of a Lunar
Radio Telescope Antenna", Proceedings of SPACE 90 Conference: Engineering,
Construction and Operations in Space, April, 1990, pp. 697-706.
Nehme,
J., and Gerstle, W., "Coupled
Finite and Boundary Element Modeling of 2D Cracks", Developments in
Mechanics, Proceedings of the Twenty-First Midwestern Mechanics Conference,
Vol. 15, Ligon, J. B. et al., Eds., Aug., 1989, pp. 327-328.
Johnson,
S., Burns, J., Chua, K.-M., Duric, N., Gerstle, W. and Taylor, J.,
"Developing Concepts for Lunar Astronomical Observatories:
Interdisciplinary Team Experiences at the
Gerstle,
W. H., Ingraffea, A. R., and Perucchio, R., "Analysis of Non-Planar,
Three-Dimensional Fatigue Crack Propagation Using the Boundary Element Method
and Interactive Computer Graphics", 19th National Symposium on Fracture
Mechanics, ASTM, June 30, 1986.
*Gerstle,
W. H., and Ingraffea, A. R., "Boundary Element Modelling of Crack
Propagation in Three Dimensions", Proceedings of the 2nd Boundary Element
Technology Conference, Massachusetts Institute of Technology, J.J. Connor and
C.A. Brebbia, Eds., pp. 651-662, June,1986.
*Ingraffea,
A. R., Gerstle, W. H., Perucchio, R., "Fracture Analysis with Interactive
Computer Graphics", Boundary Element Methods in Structural Analysis, D. E.
Beskos, Ed., Patras, Greece, 1986.
*Gerstle,
W. H., and Ingraffea, A. R., "Error Control in Three-Dimensional Crack
Modeling Using the Boundary Element Method", Advanced Topics in Boundary Element
Analysis, ASME AMD-Vol. 72, pp. 205-211, 1986.
*Ingraffea,
A. R., and Gerstle, W. H., "Non-linear Fracture Models for Discrete Crack
Propagation", Application of Fracture Mechanics to Cementitious
Composites, NATO-ARW, Northwestern University, S. P. Shah, Ed., 1984.
*Gerstle,
W. H., Ingraffea, A. R., and Gergely, P., "Tension Stiffening: A Fracture
Mechanics Approach", Bond in Concrete, P. Bartos, Ed., 1982, pp. 97-106.
Gerstle,
W. H., Ingraffea, A. R., and Gergely, P., "The Fracture Mechanics of Bond
in Reinforced Concrete", Proceedings of the Ninth U. S. National Congress
of Applied Mechanics, Cornell University, June, 1982, p. 126.
Reports
Gopalaratnam,
V., Gerstle, W., Isenberg, J., and Mindess, S., "Dynamic Fracture:
State-of-the-Art", American Concrete Institute 446.4R-04, Reported by ACI
Committee 446, 2004.
J.
Bredehoeft and W.H. Gerstle, "The HARTMAN Scenario Revisited: Implications
for WIPP", Report: The Hydrodynamics Group, La Honda, CA, August, (1997).
W.H.
Gerstle and J. Bredehoeft, "Linear Elastic Model for Hydrofracture at WIPP
and Comparison with BRAGFLO Results", Report: New Mexico Attorney General,
(September 1997).
Gerstle,
W., Mendenhall, F., and Wawersik, W., "Prediction of Gas-Driven
Hydrofracture at WIPP", UNM Departmental Report, 1996.
Darwin,
D., and Gerstle, W., "Finite Element Analysis of Fracture in Concrete
Structures: State-of-the-Art", American Concrete Institute 446.3R-97,
Reported by ACI Committee 446, 1998. Published in In ACI Manual of Concrete
Practice.
Gerstle,
W., Xie, M., Panthaki, M., Labreche, D. and Christian-Frear, T., "CoMeT:
An Integrated Computer Graphical Structural Zooming System", Topical
Report RSI-0410, RE/SPEC, Inc., 1991.
Gerstle,
W., "Finite Element Analysis of Hardened Aircraft Shelters", Report
for AFOSR Summer Faculty Program, 1991.
Bicanic,
N., de Borst, R., Gerstle, W., Murray, D., Pijaudier-Cabot, G., Saouma, V., and
Willam, K., "Computational Aspects of Finite Element Analysis of
Reinforced Concrete", International Workshop held at Columbia University,
June, 1991.
Panthaki,
M. J. and Gerstle, W. H., "PGraph: A Two-Dimensional Preprocessing
Environment for Computational Mechanics," prepared for ARCO OIL and Gas
Co., 1990.
Gerstle,
W. H., "Structural Zooming Research and Development of an Interactive
Graphical Interface for Stress Analysis of Cracks", NASA/American Society
for Engineering Education (ASEE) Summer Faculty Fellowship Program 1989,
Tiwari, S. N. (Compiler), NASA Contractor Report 181894, pp. 67-68, Sept.,
1989.
Panthaki,
M. J. and Gerstle, W. H., "StressGraph: A Structural Zooming System, Phase
I Final Report", RE/SPEC RSI-0339, 1988.
Abdalla,
J., and Gerstle, W., "A Finite Element for Arbitrarily Precise
Determination of Stress Intensity Factors", UNM Bureau of Engineering
Research Report CE-84(88). January, 1988.
Gerstle,
W. H., and Jones, A. K., "Mechanical Properties of Crushed Salt/Bentonite
Blocks", Sandia National Laboratories Report SAND86-0707, 1986.
Gerstle,
W. H., "Finite and Boundary Element Modelling of Crack Propagation in Two-
and Three- Dimensions Using Interactive Computer Graphics", Report 85-8,
Department of Structural Engineering, Cornell University, October 1985.
Gerstle,
W. H., Ingraffea, A. R., and Gergely, P., "The Fracture Mechanics of Bond
in Reinforced Concrete", Report 82-7, Department of Structural
Engineering,
Chairman of Graduate Student Committees (I have served on many other G.S. committees)
MS Degree Students:
Ortega,
Aguilera,
Roybal,
Lee,
Yongsub "The Effect of Air on Structural Vibrations", Masters
Project, August, 2006.
Mareddy,
Shilpa "An Analysis of Service Level Vibrations in a Utility
Building", Masters Thesis, May, 2006.
Pei-Yuan
Cheng, “A Metamodel for Computational Engineering”, Masters Thesis, December,
2003.
Ge
Li, “Investigation of 3D Automatic Hexahedral Meshing Approaches”, Masters
Thesis, December, 2000.
Rajanikanth
Jayaseelan, “An Extensibility Mechanism for a Computational Mechanics
Framework”, Masters Thesis, December, 2000.
Valerio,
Robert, “Modelling Concepts Pertaining to a Gas-Driven Hydrofracture Scenario”,
Masters Thesis, May, 2001.
Funston,
Monica, "Quantity: A Computational Subsystem", Masters Thesis, May,
2000.
Yunlong
Yang, "Blowout at WIPP Caused by an Inadvertent Penetration", Masters
Thesis, May, 1999.
Paul
Wolfenbarger, "Exploration of a New Unstructured Quadrilateral Mesh
Generation Algorithm", Masters Thesis, December 1998.
Keehn,
Sandi, Masters Degree (all course option), 1998.
Malanthara,
Anish, "Automatic Delaunay Meshing", Masters Thesis, 1997.
Maberry,
Steve, "Fictitious Cracks, Real Cracks, Curling Slabs, and a Search for
Alternate Methods of Crack Control", Masters Project, 1997.
Bosiljevac,
Thomas, "Rational Design Methods for Post-Tensioned Slabs-on-Grade",
Masters Project, 1996.
Guo
Yinglong, "Loading Rate Effect on Stress Cracking of High Density
Polyethylene Geomembranes", Masters Thesis, 1996.
Guo,
Wei, "Automatic Mesh Generation for Crack Propagation Simulation in Planar
Domains", Master's, 1995.
Liu,
Qing, "Modeling of Gas-Driven Hydrofracture at WIPP", Master's
Thesis, 1995.
Heo,
Gwanghee, "Stress-Intensity Factor Calibration of Shear Beam",
Master's Thesis, 1995.
Prasad,
N.N.V., "Interactive Graphical Finite Element Postprocessing", Master's
Thesis, 1992.
Rahulkumar,
Pakal, "A Study of the Size Effect in Concrete", Master's Thesis,
December 1992.
Dey,
Partha Pratim, "Fracture of Concrete Beams Including Size Effect",
Master's Thesis, 1992.
Castillo,
Richard, "Structural Stability of Steel Frames", Masters Project,
1991.
Akgul,
F., "An Interactive Graphical Software Tool for the Computer-Aided
Structural Design of a Lunar Radio Telescope Reflector", Master's Thesis,
1989.
Everhart,
Robert Douglas, "Calculation of Stress and Strain Using Velocity Data from
One-Dimensional Dynamic Material Properties Tests", Master's Thesis, 1989.
Abdalla,
Joao Elias Filho, "A Finite Element for Arbitrarily Precise Determination
of Stress Intensity Factors", Master's Thesis, 1988.
Ph.D. Degree Students:
Sau,
Nicolas, "Peridynamic Modeling of Reinforced Concrete Structures",
Ph.D., expected to be completed in 2007.
Sahu,
Raikanta, "An Object-Oriented Framework for Computational Mechanics",
Ph.D., 1998.
Xie,
Ming, "Finite Element Analysis of Discrete Fracture", Ph.D., 1995.
Nehme,
J. A., "Coupled Finite- and Boundary-Element Modeling of Crack
Propagation", Ph.D., 1990.
Student Projects Supervised
AISC/ASCE
Steel Bridge Building Competition: 2003, 2002, 1999, 1998, 1997, 1996, 1995,
1994, 1993, 1992
Advisor for NSF Research
Experiences for Undergraduates in Civil Engineering Program:
1996 Leslie Sandoval
1994 Cyrus Morrow, Jennifer Biggs
1993 Rita Dominguez
1992 Reagan Santelle
1991 Thomas Kratochvil
1990 Audrey Blea
Advisor for
"Gifted" Highschool Students:
1996 Kyle Fenton,
1992 John Woodruff,
1990 Kirk Cessac,
Teaching
Courses
taught (by semester)
Median ICES student ratings on a scale of 6=excellent,
1=very poor for Course, Instructor, and Content (General)
Median ICES student ratings on a scale of 5=excellent,
1=very poor for Instructor Knowledge and Instructor Enthusiasm
(NA=Not Available):
|
Course/Semester |
Number of Students |
Course (General) |
Instructor (General) |
Content (General) |
Instructor Knowledge |
Instructor Enthusiasm |
|
S08 (on sabbatical leave) |
|
|
|
|
|
|
|
F07 (on sabbatical leave) |
|
|
|
|
|
|
|
CE310, Structural Design; S07 |
17 |
4.7 |
4.5 |
4.8 |
3.9 |
4.1 |
|
CE502, Finite Element Analysis; S07 |
15 |
5.6 |
5.7 |
5.6 |
4.8 |
4.7 |
|
CE691, Civil Engng. Seminar; F06 |
33 |
NA |
NA |
NA |
NA |
NA |
|
CE304, Statics and Dynamics; F06 |
45 |
5.3 |
5.7 |
5.5 |
4.6 |
4.7 |
|
CS151 MatLab Computing; F06 |
103 |