Symposium on Meshfree Methods Fifth U.S. National Congress on Computational Mechanics University of Colorado at Boulder, CO, USA August 4-6, 1999 http://civil.colorado.edu/usnccm99 Symposium Organizers: W.K. Liu, T. Belytschko, J.S. Chen and L. Schwer Session 1 (August 4, Wednesday) Chair: T. Belytschko Co-Chair: C. A. Duarte 1. Keynote Lecture: New Concepts in Meshless Methods in Computational Mechanics Satya N.Atluri* (atluri@seas.ucla.edu) University of California at Los Angeles Los Angeles, CA 90095-1600, USA 2. Stabilized Nodal Integration Methods for Galerkin-Based Meshfree Methods J. S. Chen* (jschen@icaen.uiowa.edu), S. Yoon, C. T. Wu Department of Mechanical Engineering & Center for Computer Aided Design The University of Iowa 2137 SC Iowa City, IA 52242-1527, USA 3. Meshless Simulations of Extremely Large Deformation Problems in Solids Shaofan Li* (shaofan@tam4.mech.nwu.edu), Wei Hao Department of Mechanical Engineering Northwestern University Evanston, IL 60208-3019, USA 4. Interface Algorithms for Particle Node Interaction with Finite Elements G. R. Johnson* (Gordon_Johnson@ATK.COM), S. R. Beissel (Stephen_Beissel@ATK.COM), R. A. Stryk (Robert_Stryk@ATK.COM) Alliant Techsystems, Hopkins, MN, USA 5. The Material-Point Method for Granular Materials S. Bardenhagen (bard@lanl.gov) ESA-EA MS P946 Los Alamos National Laboratory Los Alamos, New Mexico 87545, USA J. Brackbill (jub@lanl.gov) T-3, MS B216 Los Alamos National Laboratory Los Alamos, New Mexico 87545, USA D. Sulsky* (sulsky@math.unm.edu) Dept. of Mathematics and Statistics University of New Mexico Albuquerque, New Mexico 87131, USA Session 2 (August 5, Thursday) Chair: J. S. Chen Co-Chair: T. E. Voth 1. Keynote Lecture: Multi-Scale Multi-Physics Methods Wing Kam Liu* (w-liu@nwu.edu) Department of Mechanical Engineering Northwestern University Evanston, IL 60208, USA 2. The Stress Point Technique as a Meshless Method L.D. Libersky* (libersky@lanl.gov) Los Alamos National Laboratory, USA P.W. Randles Defense Threat Reduction Agency, USA 3. Parallel Computation of Dynamic Analysis by Meshless Methods Kent T. Danielson* (danielk@mail.wes.army.mil) U.S. Army Engineer Waterways Experiment Station 3909 Halls Ferry Road CEWES-SD-R Vicksburg, MS 39180-6199 USA Aziz Uras Reactor Engineering Division, Argonne National Laboratory, Argonne, IL 60439, USA Shoafan Li, and Su Hao Mechanical Engineering Northwestern University 2145 Sheridan Road Evanston, IL 60208-3111, USA 4. The Element Partition Method for Three-Dimensional Dynamic Crack Propagation C. A. Duarte* (armando@comco.com), O. N. Hamzeh, T. J. Liszka and W. W. Tworzydlo Computational Mechanics Company, Inc. 7800 Shoal Creek Blvd. Suite 290E Austin, Texas, 78757, USA Session 3 (August 5, Thursday) Chair: W. K. Liu Co-Chair: L. Schwer 1. Advances in the Stabilized Finite Point Method in Fluid Dynamics Carlos Sacco, Egenio Onate* (onate@etseccpb.upc.es), Sergio Idelsohn International Center for Numerical Methods in Engineering Universidad Politecnica de Cataluna Gran Capitan s/n, 08034 Barcelona, Spain 2. A Multiple Scale Approach to Large Eddy Simulation via RKPM Gregory J. Wagner* (g-wagner@nwu.edu) Department of Mechanical Engineering Northwestern University Evanston, IL 60208, USA 3. The Use of Reproducing Kernel Functions for Discrete Filtering in Large-Eddy Simulation Thomas E. Voth* (tevoth@sandia.gov), Mark A. Christon Computational Physics Research & Development, Sandia National Laboratories, MS 0835, Albuquerque, NM 87185-0835, USA 4. Incompressible Fluid Analysis by Adaptive Free Mesh Method on Parallel Environment Minoru Shirazaki* (shirazak@q.t.u-tokyo.ac.jp) and Genki Yagawa (yagawa@q.t.u-tokyo.ac.jp) Department of Quantum Engineering and Systems Science School of Engineering, University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan 5. Effective Properties of Microcracked Solids Via Meshfree Method Kevin Kuang-Hui Tseng* (ckhtseng@ntu.edu.sg ) School of Civil and Structural Engineering Nanyang Technological University, Singapore Su Hao (suhao@tam3.mech.nwu.edu) Department of Mechanical Engineering Northwestern University Evanston, IL 60208, USA 6. Completeness of Corrective Smoothed Particle Method for Linear Elastodynamics J. K. Chen* (chenj@smtpgw1.plk.af.mil), J. E. Beraun Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117, USA C. J. Jih CAE Department, Ford Research Laboratory, Dearborn, MI 48121, USA Session 4 (August 5, Thursday) Chair: L. D. Libersky Co-Chair: P. Smolinski 1. A Robust Integration Strategy for Meshless Methods Based on Moving Leas Squares Approximation Piotr Breitkopf CNRS, France Gilbert Touzot INSA de Rouen, France Pierre Villon* (Pierre.Villon@utc.fr) Universite de Technologie de Compiegne, France 2. Shape Design Sensitivity Analysis and Optimization of Multibody Contact Problem Using Meshfree Method Kyung K. Choi* (kkchoi@ccad.uiowa.edu), Nam H. Kim (nkim@icaen.uiowa.edu), Jiun S. Chen (jschen@icaen.uiowa.edu) Center for Computer Aided Design and Department of Mechanical Engineering College of Engineering, The University of Iowa, Iowa City, IA 52242, USA 3. Shearing of Uniform and Polydisperse Distribution of Grains S. Bardenhagen* (bard@lanl.gov) ESA-EA, MS P946 Los Alamos National Laboratory Los Alamos, New Mexico 87545, USA J. Brackbill T--3, MS B216 Los Alamos National Laboratory Los Alamos, New Mexico 87545, USA D. Sulsky Dept. of Mathematics and Statistics University of New Mexico Albuquerque, New Mexico 87131, USA 4. A Truly Meshfree Method with Domain Smoothing S. Hao* (suhao@tam8.mech.nwu.edu) Department of Mechanical Engineering Northwestern University Evanston, IL 60208, USA 5. Study on Tension Softening Analysis of Concrete Using Free Mesh Method Jun Tomiyama* (k957334@tec.u-ryukyu.ac.jp), Shigeo Iraha (iraha@tec.u-ryukyu.ac.jp) Department of Civil Engineering and Architecture University of the Ryukyus, Japan Genki Yagawa* (yagawa@q.t.u-tokyo.ac.jp) School of Engineering University of Tokyo, Japan 6. Element-Free Galerkin Calculations for Concrete Failure in a Dynamic Uniaxial Tension Test Leonard E. Schwer* (lschwer@sonic.net) Schwer Engineering & Consulting Services 6122 Aaron Court Windsor, CA 95492-8651, USA Ted Belytschko, Charles Gerlach Department of Mechanical Engineering Northwestern University 2145 Sheridan Road Evanston, IL 60208-3111, USA Session 5 (August 6, Friday) Chair: P. Villon Co-Chair: S. Li 1. A Octree Based Partition of Unity Method for Three Dimensional Domains Ottmar Klaas* (oklaas@scorec.rpi.edu), Mark S. Shephard (shephard@scorec.rpi.edu) Scientific Computation Research Center Rensselaer Polytechnic Institute 110 8th St., Troy, NY 12180-3590, USA 2. Procedures for the Multi-Time Step Integration of Element-Free Galerkin Methods Patrick Smolinski* (patsmol@vms.cis.pitt.edu), Timothy A. Palmer Mechanical Engineering Department University of Pittsburgh Pittsburgh, Pennsylvania 15261, USA 3. Analyses on the Stability of SPH and Meshfree Methods Colin J. Hayhurst* (all@centdyn.demon.co.uk) Century Dynamics Ltd. Dynamics House Hurst Road Horsham, West Sussex, RH12 2DT, England 4. Element Free Analyses of Membrane and Cable Structures with Discontinuous Slopes Hirohisa Noguchi* (noguchi@sd.keio.ac.jp) Department of System Design Engineering Keio University, Yokohama, Japan 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522 Tetsuya Kawashima (m971857@msr.st.keio.ac.jp) Department of Mechanical Engineering Keio University, Yokohama, Japan 5. Smoothed Particle Hydrodynamics Simulation of Disk-Shaped Penetrator Impact Stephen J. Schraml* (stephen@arl.mil), Kent D. Kimsey (kimsey@arl.mil) U.S. Army Research Laboratory Aberdeen Proving Ground, MD 21005-5066, USA 6. Exact Implementation of Boundary Conditions for Meshfree Methods Vadim Shapiro* (vshapiro@engr.wisc.edu), Igor Tsukanov (igor@sal-cnc.me.wisc.edu) Spatial Automation Laboratory University of Wisconsin-Madison 1513 University Avenue Madison, WI 53706, USA Session 6 (August 6, Friday) Chair: G. R. Johnson Co-Chair: S. Hao 1. Shape Sensitivity Analysis and Shape Optimization by the Element Free Galerkin Method F. Bobaru (fb21@cornell.edu), S. Mukherjee* (sm85@cornell.edu) Department of Theoretical and Applied Mechanics Cornell University, Ithaca, NY 14853, USA 2. Large Deformation Analysis of Solid Using Multiscale Voxel Data K. Suzuki* (katsu@nasl.t.u-tokyo.ac.jp), H. Ohtsubo, K. Nakanishi and S. Min Dept. of Environmental and Ocean Engineering Faculty of Engineering, The University of Tokyo Hongo 7-3-1, Bunkyo-ku Tokyo Japan 113-8656 3. A Finite Cloud Meshless Method For MEMS N. R. Aluru* (aluru@uiuc.edu) Beckman Institute and Department of General Engineering University of Illinois at Urbana-Champaign Urbana, IL 61801, USA 4. The Generalized Finite Element Method: Numerically Generated Approximation Functions and Error Estimation T. Strouboulis, K. Copps* (kc@isc.tamu.edu) Department of Aerospace Engineering Texas A&M University, College Station, TX 77843, USA Babuska Texas Institute for Computational and Applied Mathematics University of Texas, Austin TX 78712, USA 5. Element-Free Implementation in Two-Dimensional Elasto-Plastic Analysis Osamu Hazama (hazama@typhoon.cm.me.ynu.ac.jp), Hiroshi Okuda* (okuda@typhoon.cm.me.ynu.ac.jp) Dept. of Mechanical Engineering and Materials Science Yokohama National University 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan Session 7 (August 6, Friday) Chair: K. T. Danielson Co-Chair: G. J. Wagner 1. An Adaptive Finite-Element / Element-Free Galerkin Approach for Crack-Initiation Problems H. Karutz* (holger.karutz@ruhr-uni-bochum.de), W.B. Kratzig Institute for Statics and Dynamics Department of Civil Engineering Ruhr-University, 44780 Bochum, Germany 2. EFGM for Saturated Soil Hiroshi Kawabata, Akira Murakami* (murakami@emeu.kais.kyoto-u.ac.jp), Shigeyasu Aoyama Graduate School of Agriculture Kyoto University, Kyoto 606-8502, Japan 3. A hybrid (coupled SPH-FE) method for Impact Computations M. Sauer* (martin.sauer@unibw-muenchen.de) Institute for Mechanics and Statics Department of Civil Engineering Federal Armed Forces University, Munich, Germany 4. Node Generation Scheme for the Meshfree Method by Voronoi Diagram and Weighted Bubble Packing Yoo Jin Choi and Seung Jo Kim* (sjkim@gong.snu.ac.kr) Department of Aerospace Engineering Seoul National University, Seoul 151-742, Republic of Korea 5. Elasto-Plastic Large Deformation Analysis Using Free Mesh Method Osamu Watanabe* (watanabe@kz.tsukuba.ac.jp) Institute of Engineering Mechanics University of Tsukuba Tsukuba, Ibaraki 305-8573, Japan Fuyuki Segawa Research Institute Sanyo Special Steel Co., Ltd. Shikama, Himeji 672-8035, Japan --------------------------------------------------------------------- ======================================= Jiun-Shyan Chen Department of Mechanical Engineering & Center for Computer-Aided Design The University of Iowa 2137 Engineering Building Iowa City, IA 52242-1527 (O) 319-335-5677 (FAX)319-335-5669 e-mail: jschen@icaen.uiowa.edu =======================================