EVALUATION OF STEEL STRUCTURE DETERIORATION WITH CYCLIC DAMAGED PLASTICITY

摘要：

In analysis and design of structures subjected to earthquakes, the cyclic and dynamic nature of the response leads to complications. Material models need to account for cyclic plasticity, including deterioration and eventual failure due to low-cycle fatigue. A cyclic damage plasticity model is implemented to combine nonlinear kinematic hardening, isotropic hardening, and isotropic damage evolution based on continuum damage mechanics, reproducing an approximation to the Manson-Coffin low-cycle fatigue rule without cycle counting. This makes it possible to model the decrease in the materials ability to deform inelastically, and provides considerable insight into the mode of failure and the effects of local detailing of steel structures.

关键词： Steel structures Cyclic Fatigue Damage

作者: Yuli Huang Stephen A. Mahin

作者单位: Dept. of Civil and Env. Eng., Univ. of Calif., Berkeley, CA, US

会议类型: 国际会议

会议名称: 14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）