基于显式动力学的框架结构倒塌数值模拟方法研究  

Research on numerical simulation method of frame structure collapse based on explicit dynamics

作　　者：胡凯[1] 蒋瓅[1] 

机构地区：[1]中船第九设计研究院工程有限公司,上海200063

出　　处：《建筑结构》2016年第24期38-45,共8页Building Structure

摘　　要：以结构倒塌数值模拟的理论为基础,选择基于显式动力学的有限单元法作为数值计算方法,结合单榀框架倒塌试验及十层框架结构算例,分别建立并设置了线框、整体式和分离式模型,并采用拆除构件法对三个模型进行倒塌数值模拟方法的研究,分别从多个方面对结果进行比较,验证了数值模拟方法的合理性以及三种模型各自的适用性。同时,针对繁复的结构倒塌模拟前处理过程,采用VC++语言开发了可导出ANSYS/LS-DYNA结构倒塌线框模型APDL文本的MFC程序,以期为结构倒塌数值模拟提供便利。According to the theory of collapse numerical simulation,the finite element method based on explicit dynamics was chosen as the numerical calculation method.Combined with the single-span RC frame collapse test and the calculating example of a ten-layer frame structure,the frame model,integrated model and separate model were set respectively.Dismantling component method was used to study the numerical simulation method of structural collapse for three models respectively.With the comparison of several aspects of the results,the rationality of the numerical simulation method and the applicability of the three models were verified respectively.At the same time,for the complex pre-treatment process to the numerical simulation of structural collapse,VC ＋ ＋ language was used to develop an MFC program to export APDL file of the structure collapse frame model in ANSYS / LS-DYNA,in order to offer convenience to the numerical simulation process of structure collapse.

关 键 词：倒塌 有限单元法 显式动力学 LS-DYNA 拆除构件法 整体式模型 分离式模型 前处理二次开发 

分 类 号：TU375.4[建筑科学—结构工程] TU317.1