基于有限元软件的子结构拟动力试验技术  

Pseudo-Dynamic Test Method with Sub-Structure Technique Based on Finite Element Software OpenSees

作　　者：王强[1] 冯帆[1] Shawn You 刘明[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]MTS System Corporation,USAMN,55344-2290

出　　处：《沈阳建筑大学学报（自然科学版）》2010年第6期1085-1089,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：住房和城乡建设部科技计划项目(2008-k1-15);辽宁省建筑结构工程重点实验室开放基金项目(JG-200916)

摘　　要：目的研究有限元软件与电液伺服加载系统联机的子结构拟动力试验技术.方法运用OpenFresco试验协调系统,实现通用有限元软件OpenSees与电液伺服加载系统MTS Flextest GT的数据传递,并开展单层单跨钢结构框架在地震作用下的反应分析.结果MTS Flextest GT可以有效地接收并响应OpenSees发出的位移命令,作动器的目标位移与反馈位移基本一致,MTS Flextest GT与OpenSees的通信稳定可靠.子结构拟动力试验结果与OpenSees模拟结果吻合较好,该试验方法完全能够满足试验精度的要求.结论采用OpenFresco协调试验系统能够实现结构构件层次上的子结构拟动力试验,极大地扩展了拟动力试验的功能.Pseudo-dynamic test method with sub-structure technique has been developed to combine finite element software and electro hydraulic servo system.Test data of electro hydraulic servo system MTS Flextest GT and analysis data of finite element software OpenSees are exchanged successfully by the collaborative system OpenFresco.Then,the seismic response of one bay one story steel frame structure is experimentally studied.The results show that the MTS Flextest GT system can effectively receive and respond the displacement com-mands of OpenSees,and the actuator＇s aim displacements accord with the actuator＇s feedback displacements.The communications between MTS Flextest GT and OpenSees are stable.By comparing the test results with OpenSees simulation results,they accorded accurately.It is proved that the collaborative system OpenFresco can research sub-component of structures using pseudo-dynamic test method with sub-structure technique experimentally.The function of pseudo-dynamic test method is widely expanded.

关 键 词：拟动力试验 子结构技术 有限元 电液伺服加载系统 OpenFresco 

分 类 号：TU375[建筑科学—结构工程]