大尺寸非线性实时动力子结构试验实现  

The implementation of nonlinear real-time dynamics substructuring for large scale specimen

作　　者：洪越 唐贞云[1] 何涛 李振宝[1] 姜忻良[2] 

机构地区：[1]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124 [2]天津大学建筑工程学院,天津300072

出　　处：《振动工程学报》2017年第6期913-920,共8页Journal of Vibration Engineering

基　　金：北京市自然科学基金资助项目(8164050);2014年度北京市优秀人才培养资助青年骨干个人项目(2014000020124G035);北京市教育委员会科技计划一般项目(KM201610005013)

摘　　要：实时子结构试验结合物理试验和数值计算的优点,间接增强了既有设备试验能力。受数值积分算法和加载系统控制方法的限制,该方法目前仅限于结构线性或小尺寸试件非线性动力特性研究。为了改善数值子结构求解及物理子结构控制性能,基于SIMULINK发展了闭环数值积分方法、建立了基于仿真的逆动力补偿控制策略。利用这两项技术成功实现了大尺寸试件非线性实时子结构试验,并通过数值仿真和试验验证了其性能。研究表明:发展的非线性实时子结构试验充分释放了该试验技术的潜能。Combining the advantages of physical testing and numerical simulation, real time dynamic substructuring （RTDS） enhances the testing capacity of the test facilities. So far, RTDS can only test the linear behavior of structures or the nonlinear behavior of small scale specimen limited by the drawbacks of integration and control algorithm. Based on SIMULINK,a closed loop numerical solution scheme is developed and a control strategy called inverse dynamics compensation via simulation is estab-lished to improve the performance of numerical solution and physical control in RTDS. The RTDS for simulating the nonlinear-ities of large scale specimen is implemented successfully. The performance of the nonlinear RTDS is verified numerically and experimentally. The achievement of this work unleashes the potentiality of RTDS greatly.

关 键 词：实时动力子结构试验 非线性 数值积分 系统控制 SIMULINK 

分 类 号：TU311.3[建筑科学—结构工程] TU317