摘要
为克服复杂摩擦摆减隔震结构隐式非线性动力分析收敛困难且计算效率低的技术瓶颈;基于经典的摩擦摆力学模型,该文构造了一种2节点12自由度的显式摩擦摆单元,利用修正的向前Euler方法实现了此单元的内力计算;在自主研发的非线性有限元软件中完成开发,通过与SAP2000隐式摩擦摆单元对比,验证了开发内容的正确性。利用自主研发软件对某三塔连体结构进行了整体动力时程分析,研究了结构非线性、连廊支座类型及参数对结构动力响应的影响。
The implicit nonlinear dynamic time-history analysis of complex structures with a friction pendulum system is difficult to converge, and its computational efficiency is low. Based on a classical friction pendulum model, an explicit friction pendulum element with 2 nodes and 12 degrees of freedom was presented;using the modified forward Euler method, the element internal force was evaluated. The proposed element and algorithm were developed in a nonlinear finite element software with independent intellectual property rights. The correctness of the software was verified by comparing with SAP2000. The dynamic time history response of a complex connected structure with three towers was analyzed by the software. The results showed that the dynamic response of the structure was influenced by structural nonlinearity, the bearing type of the corridors and parameters of the bearing.
作者
曹胜涛
李志山
刘博
CAO Sheng-tao;LI Zhi-shan;LIU Bo(Guangdong Provincial Key Laboratory of Earthquake Engineering and Applied Technology,Guangzhou University,Guangzhou 510405,China;China Academy of Building Research,Beijing 100013,China;CCDI Group Co.,Ltd.,Beijing 100013,China)
出处
《工程力学》
EI
CSCD
北大核心
2019年第6期128-137,共10页
Engineering Mechanics
基金
“十三五”国家重点研发计划高性能计算重点专项项目(2016YFB0200605)
关键词
摩擦摆
非线性动力时程分析
单元内力计算
显式积分方法
复杂连体结构
friction pendulum
nonlinear dynamic time-history analysis
element internal force evaluation
explicit integration method
complex connected structure
