摘要
采用混合强化准则 ,考虑Bauschinger效应、屈服平台、硬化 (软化 )效应及损伤和损伤演化影响 ,提出了结构钢弹塑性各向异性损伤本构模型 ;采用U L 格式的壳体大挠度双重非线性有限元分析方法 ,对工形组合截面压弯钢构件进行循环荷载作用下的非线性分析 。
A new model to analyze an Ⅰ?section beam?column with damage under cyclic action is proposed in the paper. It is called that is the elasto?plastic anisotropic damage model. It can reflect the behavior of structural steel under cyclic loads. It is suitable for the elasto?plastic analyses of steel structures under the earthquake. The updated Lagrangian formulation is used for the nonlinear finite element in the study. The welded Ⅰ?section beam?columns with damage under the cyclic action are analyzed and discussed. It is found that the formula for limit capacity is proposed.
出处
《土木工程学报》
EI
CSCD
北大核心
2002年第5期7-10,共4页
China Civil Engineering Journal
基金
国家自然科学基金资助(59678030)
中国博士后科学基金资助
