|Table of Contents|

Analysis of Deficiency of ANSYS Geometric Nonlinear Arithmetic Based on Finite Deformation Theory(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2008年02期
Page:
106-110
Research Field:
Publishing date:
2008-06-20

Info

Title:
Analysis of Deficiency of ANSYS Geometric Nonlinear Arithmetic Based on Finite Deformation Theory
Author(s):
GAO Chen-yan;  YIN Guan-sheng;  MA Chao
School of Science, Chang'an University, Xi'an 710064, Shaanxi, China
Keywords:
ANSYS;  finite deformation theory;  geometric nonlinearity;  conjugacy relation
PACS:
TU12
DOI:
-
Abstract:
The definition of strain, the relationship between computation stress and true stress of body, deformation as well as geometric nonlinear computation of unbalance force were analyzed in details by using ANSYS based on finite deformation theory. The calculation values of rod element Link8 and 2-D element Plane42 solved by ANSYS were compared with the theoretical solutions. The comparison points out that ANSYS geometric nonlinear arithmetic is deficient, ie without considering the conjugacy relation of stress and strain, it is an approximate nonlinear calculation.

References:

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Memo

Memo:
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Last Update: 2008-06-20