NONSAP
所属分类：数学计算
开发工具：Others
文件大小：122KB
下载次数：275
上传日期：2008-10-16 05:51:03
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pinew
说明： 非线性有限元程序，NONSAP is a general finite element program for the nonlinear static and dynamic analysis of complex structures. The program is very flexible and was designed to be extended and modified by the user. In particular the program can easily be modified to use a different formulation of the equations of motions, different time integration operators and other additional options.
(Nonlinear finite element program, NONSAP is a general finite element program for the nonlinear static and dynamic analysis of complex structures. The program is very flexible and was designed to be extended and modified by the user. In particular the program can easily be modified to use a different formulation of the equations of motions, different time integration operators and other additional options.)
文件列表:
IBM (0, 2005-06-08)
IBM\INPUT (0, 2005-06-08)
IBM\INPUT\NONSAP.DAT (21894, 1997-01-14)
IBM\OUTPUT (0, 2005-06-08)
IBM\OUTPUT\NONSAP1.OUT (80730, 1997-01-14)
IBM\OUTPUT\NONSAP2.OUT (212085, 1997-01-14)
IBM\OUTPUT\NONSAP3.OUT (92745, 1997-01-14)
IBM\OUTPUT\NONSAP4.OUT (83700, 1997-01-14)
IBM\OUTPUT\NONSAP5.OUT (95985, 1997-01-14)
IBM\SOURCE (0, 2005-06-08)
IBM\SOURCE\NONSAP.FOR (840501, 1997-08-06)
Program: NONSAP
Title: Static and Dynamic Response of Nonlinear Systems
Developer: K.-J. Bathe, E. L. Wilson and R. H. Iding,
Department of Civil Engineering, University of California,
Berkeley 1974
Category: Nonlinear Structural
Platform: CDC,Scope,FTN4 (60 bit single precision);
IBM,VM/CMS,Fortran4H (double precision);
Fujitsu VP
Reference: Bathe, K-J., E. L. Wilson and R. H. Iding,
"NONSAP - A Structural Analysis Program for Static and
Dynamic Response of Nonlinear Systems," Structural
Engineering Lab, Report No. UCB/SESM-74/3, Department of
Civil Engineering, University of California, Berkeley,
California, February 1974.
Bathe, K-J., H. Ozdemir, and E.L. Wilson, "Static and Dynamic
Geometric and Material Nonlinear Analysis", Structural Engineering
Lab, Report No. UCB/SESM-74/4, Department of Civil Engineering,
University of California, Berkeley, California, February 1974.
Summary: NONSAP is a finite element structural analysis
program for the static and dynamic response of nonlinear
systems. The program is an in-core solver. The system
response is calculated using an incremental solution of the
equation of equilibrium with the Wilson-theta or Newmark
time integration scheme. Before the time integration is
carried out, the constant structure matrices, namely the
linear effective stiffness matrix, the linear stiffness,
mass and damping matrices, whichever applicable, and the
load vectors are assembled and stored on low speed storage.
During the step-by-step solution the linear effective
stiffness matrix is updated for the nonlinearities
in the system. Therefore, only the nonlinearities are dealt
with in the time integration. The structural systems to be
analyzed may be composed of the following element types: (a)
3-D truss element; (b) 2-D plane stress and plane strain
element; (c) 2-D axisymmetric shell or solid element; and
(d) 3-D thick shell element. Nonlinearities may be due to
large displacements, large strains, and nonlinear
material behavior. The following material descriptions are
available: For Truss Elements (a) linear elastic and (b)
nonlinear elastic; For 2-D Elements (a) isotropic linear
elastic, (b) orthotropic linear elastic, (c) Mooney-Rivlin
material, (d) elastic-plastic materials (von Mises or
Drucker-Prager yield conditions), (e) variable tangent
moduli model, and (f) curve description model (with tension
cut-off); and For 3-D Elements (a) isotropic linear elastic
and (b) curve description model.
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