摘要
在杆端多弹簧弹塑性模型中引入了断裂机制 ,采用根据J积分撕裂模量法建立的判别裂纹失稳的失效评定图设定模型参数 .通过和有关试验结果的比较 ,验证了建立的模型及算法可以充分反映局部断裂后节点滞回性能的主要特点 .根据若干算例结果 。
The fracture mechanism is introduced into an elastic plastic model,which is composed of several non linear springs at the end of the members.The failure assessment diagram of fracture based on the J integral theory is adopted for the calibration of the model parameters.By comparison with the experimental results,it is shown that the established model and the computation procedure can fully reflect the main characters of the hysterical behavior after partial fracture.A simplified non linear model for connection fracture,which can be employed for whole structural analysis,is then proposed based on numerical results obtained.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第5期525-529,共5页
Journal of Tongji University:Natural Science
基金
高等学校博士学科点专项科研基金资助项目 ( 5 60 .3 5 0 0 )
关键词
钢框架
节点
断裂
滞回特性
数值模拟
steel frame
connection
fracture
hysteric behavior
numerical simulation
