ELASTIC COMPENSATION FINITE ELEMENT METHOD FOR PLASTIC LIMIT ANALYSIS OF A STRUCTURE SYSTEM WITH MULTI-MATERIAL

Zhang Wei; Yang Lufeng; Han Xiaofeng

doi:10.13204/j.gyjz200911014

Volume 39 Issue 11

Dec. 2014

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Zhang Wei, Yang Lufeng, Han Xiaofeng. ELASTIC COMPENSATION FINITE ELEMENT METHOD FOR PLASTIC LIMIT ANALYSIS OF A STRUCTURE SYSTEM WITH MULTI-MATERIAL[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(11): 56-61. doi: 10.13204/j.gyjz200911014

Citation:

Zhang Wei, Yang Lufeng, Han Xiaofeng. ELASTIC COMPENSATION FINITE ELEMENT METHOD FOR PLASTIC LIMIT ANALYSIS OF A STRUCTURE SYSTEM WITH MULTI-MATERIAL[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(11): 56-61. doi: 10.13204/j.gyjz200911014

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ELASTIC COMPENSATION FINITE ELEMENT METHOD FOR PLASTIC LIMIT ANALYSIS OF A STRUCTURE SYSTEM WITH MULTI-MATERIAL

doi: 10.13204/j.gyjz200911014

1.
1. Key Laboratory of Disaster Prevention and Structural Safety,Guangxi University,Nanning 530004,China;
2.
2. Guangxi Electric Power Industry Investigation Design and Research Institute,Nanning 530023,China

Received Date: 2008-12-01
Publish Date: 2009-11-20

Abstract

Abstract

The elastic compensation finite element method(ECFEM) is a simple and efficient method of plastic limit analysis,and it is only applicable to a commaterial structure system.An improved algorithm based on ECFEM is proposed by introducing bearing-ratio into the standard algorithm,which not only keeps the basic thought of flattening generalized stress in structure,but also leads the flattening process in proportion with generalized strength of every material.Using this method,all materials reach their generalized strength when the structure system is in its failure mode,and ECFEM can be expanded into the limit analysis of a structure system with multi-material.Contrastive analysis of some classical examples shows that the results using the algorithm are convergent,accurate and stabilizing.Furthermore,the algorithm is also verified to be feasible in safety evaluation of complicated structures by the results of limit load and failure mode.
- plastic limit analysis,
- elastic compensation finite element method,
- structure system with multi-material,
- generalized bearing-ratio

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References(21)

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