Research on lower bound method of plastic limit analysis using finite elements based on nonlinear programming
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Research on lower bound method of plastic limit analysis using finite elements based on nonlinear programming
Vol. 29, Issue 6, (2008)
作者机构:
武汉大学 水资源与水电工程科学国家重点实验室,武汉,430072
作者简介:
基金信息:
DOI:
CLC:TU313
Online First:15 July 2013,
Published:2008
稿件说明:
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WANG Jun-xing, LI Ze. Research on lower bound method of plastic limit analysis using finite elements based on nonlinear programming[J]. 2008, 29(6).
DOI:
WANG Jun-xing, LI Ze. Research on lower bound method of plastic limit analysis using finite elements based on nonlinear programming[J]. 2008, 29(6).DOI:
Research on lower bound method of plastic limit analysis using finite elements based on nonlinear programming
Lower bound nonlinear programming model based on limit analysis theory is constructed through the analysis of limitation of linear programming models that are proposed by S.W.Sloan. The statically admissible stress fields for lower bound analysis are constructed by using nonlinear yield conditions; and the nonlinear programming models that can calculate overload coefficient and strength safety coefficient are established; and then the optimization strategy of nonlinear programming problem is put forward. Finally
a classic example of slope stability is given; and the results prove the correctness of the method.