应用MTS-Schenk系统的实时子结构实验

针对实时子结构实验的实施和应用,介绍了实时子结构实验原理和由美国MTS公司的FlexTest GT控制系统和SCHENCK液压伺服作动器所构成的MTS-SCHENCK实验系统的应用.利用MTS-SCHENCK实验系统对一安装粘滞阻尼器的单层框架结构进行了实时子结构实验,实验中粘滞阻尼器为实验子结构,其余部分为数值子结构.在实验中采用三次外插方法补偿实验系统的时滞,实验与计算结果吻合很好.实验证明利用MTS-SCHENCK系统可以满足实时子结构实验对实验系统的要求,且实时子结构实验可以很好地反映速度相关型阻尼器的性能.

Real-time substructure test with MTS-SCHENCK system

The method of real-time substructure testing with MTS-SCHENCK system is described.The testing system includes FlexTest GT controller of MTS corporation and SCHENCK servohydraulic actuator.A real-time substructure testing was conducted with the testing system.The tested structure was a single story frame structure incorporated with a vicious damper,of which the bare frame was the numerical substructure,and the damper was the physical substructure.The cubic extrapolation method was adopted to compensate the time delay of testing system.The test results matched very well with the calculated ones.The results show that the MTS-SCHENCK testing system satisfies the demands of real-time substructure testing,and real-time substructure testing can very well reflect the performance of structure with velocity dependent components.