计算力学学报Issue(5)：609-614,6.DOI:10.7511/jslx201405011
基于柔度法与截面轴力弯矩屈服面本构的梁柱单元
Beam-column element based on flexibility method and constitutive law of yield surface of section axial force and bending moment
摘要
Abstract
Beam-column element based on section level can consider the calculation accuracy and efficiency at the same time .However ,the existing section constitutive model didn’t accurately reflect axial-flexure interaction (AFI) ,and the flexibility method was not made full use of in the Beam-column element . Herein ,a beam-column element based on flexibility method and constitutive model derived from yield surface(YS) of section axial force and bending moment (AFBM) was proposed .Firstly ,the YS of section AFBM is formed by section assemblage concept .Then ,element and section state were determinated based on flexibility method and plastic theory respectively .Finally ,dynamic elastoplastic analysis was implemented for a planar steel frame .The results show that the constitutive model derived from YS of section AFBM can account for AFI accurately ,and that the element formulated by flexibility method can well represent a member with only one element .关键词
屈服面/截面本构关系/柔度法/纤维模型/弹塑性分析Key words
yield surface/section constitutive law/flexibility method/fiber model/elastoplastic analysis分类
数理科学引用本文复制引用
陈永盛,吴斌,潘天林,许国山..基于柔度法与截面轴力弯矩屈服面本构的梁柱单元[J].计算力学学报,2014,(5):609-614,6.基金项目
国家自然科学基金（51161120360，91315301-09）资助项目． （）
