摘要
采用ANSYS建模和LS-DYNA显式动力分析的方式,分别使用HJC、脆性损伤、盖帽和混凝土损伤等4种混凝土本构模型,对钢筋混凝土墩柱的侧向冲击过程进行仿真。从系统能量的角度验证数值计算的正确性;并将冲击过程中的冲击物块加速度和钢筋应变的历时值与试验值进行对比,进一步证实仿真计算的正确性。从各本构模型的计算结果、模拟所耗费的计算时间以及所需的参数数量等方面进行对比。
By modeling of ANSYS and explicit dynamical analysis of LS-DYNA,we simulate the concrete pier columns to lateral impact mass,apply four types of concrete constitutive model on the simulation,such as Johnson Holmquist concrete constitutive model,brittle damage constitutive model,continuous surface cap constitutive model,concrete damage model,etc,and test the accuracy of the simulation calculation by the system energy. The numerical simulation value is compared with the experiment results to further validate the accuracy of the simulation calculation.The concrete constitutive models are compared with prediction accuracy,prediction speed and parameter number.
出处
《水运工程》
北大核心
2017年第12期198-203,共6页
Port & Waterway Engineering
基金
国家重点研发计划项目(2017YFC0805303)
国家自然科学基金项目(51178264)
关键词
墩柱
混凝土本构
冲击
HJC本构
脆性损伤本构
盖帽本构
混凝土损伤本构
pier column
c onc re te c o n s t i tu t iv e mo d e l
la te ra l im p a c t
Jo h n so n H o lm q u is t c o n c re te c o n s t i tu t iv e model
brittle damage cons t i tut ive mo d e l
c o n t in u o u s su r fa c e c a p c o n s t i tu t iv e m o d e l
c o n c re te d am a g e constitutive model
