含分布式单向单颗粒阻尼器的减震结构体系有限元模拟及性能分析  

Finite element analysis and damping performance of structure system with distributed parallel single-dimensional single particle dampers

作　　者：王宝顺[1] 何浩祥[1] 闫维明[1] 兰炳稷 WANG Bao-shun;HE Hao-xiang;YAN Wei-ming;LAN Bing-ji(Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学工程抗震与结构诊治北京市重点试验室,北京100124

出　　处：《振动工程学报》2022年第6期1418-1432,共15页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(51978021,51878017);国家重点研发计划(2017YFC1500604,2017YFC1500603)。

摘　　要：针对目前颗粒阻尼器减震结构在有限元模拟中难以准确实现及其减震性能评价方法不全面的不足,以减振效率高的并联式单向单颗粒阻尼器(PSSPD)为研究对象,在剖析其减振机理及颗粒运动状态的基础上,构建PSSPD在通用有限元中的复合模拟单元,明确该单元中各参数的合理取值,并确认PSSPD有限元模型具有良好的精度。在分析PSSPD中颗粒质量、颗粒运动间距及其减震效果之间关系的基础上,确定颗粒质量按振型分布及颗粒运动间距按层间位移反比分布的最优布置方案;提出PSSPD减震结构体系离散减震控制效果的评价方法;通过算例分析表明颗粒最优布置方案以及动态附加等效阻尼比评价PSSPD离散减震效果的合理性和可行性。In order to solve the problem that it is difficult to accurately realize the structure with particle damper in finite element simulation and its evaluation method of seismic performance is not comprehensive,the parallel single-dimensional single particle damper(PSSPD)with high damping efficiency is taken as the research object.Based on intensive analysis of the damping mechanism and particle motion state of PSSPD,its combined simulation element in general finite element analysis is constructed,and the reasonable values of parameters in the element are defined.Then the finite element model of PSSPD is confirmed to have fine accuracy.Next,based on the analysis of the relationship among particle mass,particle motion distance and its damping effect,the optimal layout scheme of particle mass distribution according to vibration mode distribution and particle motion distance distribution according to inverse ratio of interlayer displacement is determined,and the evaluation method of discrete damping control effect of the damping structure system with PSSPD is proposed.An example is given to show the rationality and feasibility of the optimal layout scheme and dynamic additional damping ratio to evaluate the discrete damping effect of PSSPD.

关 键 词：结构振动控制 颗粒阻尼器 有限元模拟 布置方案 减震性能评价 

分 类 号：TU352.1[建筑科学—结构工程]