建立了由MTS电液伺服系统、具有预估校正功能的目标计算机、OpenSees有限元软件、OpenFresco接口软件等组成的SRT(Soft Real Time)混合仿真试验系统.基于一个空间钢框架结构,进行了SRT混合仿真试验,对实验子结构进行了空间x,y双向实时加...建立了由MTS电液伺服系统、具有预估校正功能的目标计算机、OpenSees有限元软件、OpenFresco接口软件等组成的SRT(Soft Real Time)混合仿真试验系统.基于一个空间钢框架结构,进行了SRT混合仿真试验,对实验子结构进行了空间x,y双向实时加载.试验结果表明该混合仿真试验系统具有良好的精度和稳定性,能满足空间结构SRT混合仿真试验的要求.展开更多
This paper describes a versatile and computationally efficient method for coupling several finite element analysis(FEA)programs together so that the unique modeling and analysis capabilities of each code can be utiliz...This paper describes a versatile and computationally efficient method for coupling several finite element analysis(FEA)programs together so that the unique modeling and analysis capabilities of each code can be utilized simultaneously to simulate the static or dynamic response of a complete numerical system.An arbitrary number of finite element analysis software packages can be coupled by adding two special types of elements,namely generic and adapter elements,to each of the finite element applications using their programming interface.These elements are inserted at the interfaces between the different sub-domains of the complete system modeled by each finite element analysis software package.Exchange of data between the coupled FEA codes is accomplished in a modular and synchronized manner using OpenFresco(Opensource Framework for Experimental Setup and Control).OpenFresco is an objectoriented,environment independent software framework initially developed for hybrid simulation in which certain aspects of a complete structure are simulated numerically and other aspects are simultaneously tested physically.An important practical advantage of this coupled analysis approach is that all of the connected FEA codes run concurrently and continuously,decreasing analysis time consumption by an order of magnitude or more compared to more traditional approaches that shut down and restart the coupled analysis codes at each integration time step.The implementation and accuracy of this approach to FE software coupling are demonstrated using dynamic analyses of three simple structural models from the field of earthquake engineering.展开更多
文摘建立了由MTS电液伺服系统、具有预估校正功能的目标计算机、OpenSees有限元软件、OpenFresco接口软件等组成的SRT(Soft Real Time)混合仿真试验系统.基于一个空间钢框架结构,进行了SRT混合仿真试验,对实验子结构进行了空间x,y双向实时加载.试验结果表明该混合仿真试验系统具有良好的精度和稳定性,能满足空间结构SRT混合仿真试验的要求.
基金Funding for this work was provided in part by the National Science Foundation through a subaward from the NEES Consortium,Inc.under Cooperative Agreement CMS0402490.The authors appreciate the assistance of Dr.Frank McKenna of the University of California,Berkeley,Dr.John Hallquist of Livermore Software Technology Corporation,and Prof.Yoshikazu Takahashi of Kyoto University.The findings and conclusions are those of the authors alone,and may not reflect those of the sponsors.
文摘This paper describes a versatile and computationally efficient method for coupling several finite element analysis(FEA)programs together so that the unique modeling and analysis capabilities of each code can be utilized simultaneously to simulate the static or dynamic response of a complete numerical system.An arbitrary number of finite element analysis software packages can be coupled by adding two special types of elements,namely generic and adapter elements,to each of the finite element applications using their programming interface.These elements are inserted at the interfaces between the different sub-domains of the complete system modeled by each finite element analysis software package.Exchange of data between the coupled FEA codes is accomplished in a modular and synchronized manner using OpenFresco(Opensource Framework for Experimental Setup and Control).OpenFresco is an objectoriented,environment independent software framework initially developed for hybrid simulation in which certain aspects of a complete structure are simulated numerically and other aspects are simultaneously tested physically.An important practical advantage of this coupled analysis approach is that all of the connected FEA codes run concurrently and continuously,decreasing analysis time consumption by an order of magnitude or more compared to more traditional approaches that shut down and restart the coupled analysis codes at each integration time step.The implementation and accuracy of this approach to FE software coupling are demonstrated using dynamic analyses of three simple structural models from the field of earthquake engineering.
