LIMIT ANALYSIS OF STRUCTURES CONTAINING FLAWS BASED ON THE ELASTIC MODULUS REDUCTION METHOD

摘要：

Catastrophic failures are often occurred in structures containing flaws (SCF),and safety evaluation on ultimate bearing capacity is often required to be performed for SCF based on limit analysis. Because of the problem of stress concentration,it is difficult for many numerical methods to be used on limit analysis of SCF. The elastic modulus reduction method (EMRM) presented recently as a new elastic modulus adjustment procedure (EMAP),is adopted in limit analysis of SCF in this paper. The element bearing ratio and energy equilibrium theorems are applied to the algorithm. As a control parameter,the element bearing ratio is used to show the plastic yield level of every element under complex condition,and the energy equilibrium theorem is introduced into elastic modulus adjustment strategy. Numerical examples show that it is feasible and efficient to employ the EMRM in the limit analysis of SCF.

关键词： Limit analysis Structures containing flaws Elastic modulus reduction method

作者: Li-Wen Liu Wei Zhang Lu-Feng Yang

作者单位: Key Laboratory of Disaster Prevention and Structural Safety at Guangxi University,Ministry of Education,Nanning 530004,P.R.China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 189-193

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）