基于OpenFresco-LabVIEW-dSpace的混合试验系统研究
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摘要
OpenFresco软件使很多通用有限元软件成功应用于混合实验中,大大提高了混合实验结果的精度。OpenFresco相当于接口软件,能够与多种实验控制相连建立混合实验系统。该文选用OpenSees做为有限元分析软件、LabVIEW作为实验控制目标、dSpace作为实验控制器建立了一套混合实验系统,并通过混合模拟和混合试验验证所建立混合试验系统的有效性和精度。研究结果表明:有限元软件OpenSees、接口程序OpenFresco、实验控制LabVIEW、控制器dSpace之间的通讯性能满足混合实验的要求,试验系统具有较好的稳定性和精度。
The newly developed OpenFresco software makes several finite element softwares available for hybrid tests,and has been introduced into hybrid testing system for the ability of accurately and economically analyzing the seismic performance of structures.By using the OpenFresco software,many experimental control objects are available for the hybrid systems.This paper proposes one hybrid testing system by using the finite element software OpenSees,interface software OpenFresco,experimental control LabVIEW and controller dSpace,and validates the effectiveness and accuracy of the proposed hybrid testing system numerically and experimentally.It is shown that the OpenSees,OpenFresco,LabVIEW and dSpace can work well together to conduct hybrid tests,and the proposed hybrid testing system has excellent performance in terms of stability and accuracy.
The newly developed OpenFresco software makes several finite element softwares available for hybrid tests,and has been introduced into hybrid testing system for the ability of accurately and economically analyzing the seismic performance of structures.By using the OpenFresco software,many experimental control objects are available for the hybrid systems.This paper proposes one hybrid testing system by using the finite element software OpenSees,interface software OpenFresco,experimental control LabVIEW and controller dSpace,and validates the effectiveness and accuracy of the proposed hybrid testing system numerically and experimentally.It is shown that the OpenSees,OpenFresco,LabVIEW and dSpace can work well together to conduct hybrid tests,and the proposed hybrid testing system has excellent performance in terms of stability and accuracy.
引文
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[2]Wang Dapeng,Tian Shizhu,Cai Xinjiang,Fan Yunlei.Internet-based collaborative pseudo-dynamic testing ofmulti-span bridge structure[J].Progress in NaturalScience,2009,19(5):623―633.
[3]Wu Bin,Bao Haier,Ou Jinping,Tian Shizhu.Stabilityand accuracy analysis of central difference method forreal-time substructure testing[J].EarthquakeEngineering and Structural Dynamics,2005,34:705―718.
[4]Wu Bin,Xu Guoshan,Wang Qianying.Operator-splittingmethod for real-time substructure testing[J].EarthquakeEngineering and Structural Dynamics,2006,35(3):293―314.
[5]Wu Bin,Xu Guoshan,Shing P Benson.Equivalent forcecontrol method for real-time testing of nonlinearstructures[J].Journal of Earthquake Engineering,2011,15(1):143―164.
[6]许国山,吴斌.采用比例-积分控制的实时子结构试验等效力控制方法[J].工程力学,2009,26(9):251―256.Xu Guoshan,Wu Bin.Equivalent force control methodwith proportional-integral controller for real-timesubstructure testing[J].Engineering Mechanics,2009,26(9):251―256.(in Chinese)
[7]周大睿,许国山,吴斌,滕军,马伯涛.等效力控制方法在连梁阻尼器拟动力子结构试验中的应用[J].振动与冲击,2011,30(8):72―76.Zhou Darui,Xu Guoshan,Wu Bin,Teng Jun,Ma Botao.Application of equivalent force control method forpseudo-dynamic substructure tests of coupling beamdamper[J].Journal of Vibration and Shock,2011,30(8):72―76.(in Chinese)
[8]袁涌,熊世树,朱昆.橡胶隔震支座对桥梁隔震性能的实时子结构拟动力实验研究[J].华中科技大学学报(城市科学版),2008,25(1):35―38,46.Yuan Yong,Xiong Shishu,Zhu Kun.Study on theisolation effects of bridge rubber isolators through thedeveloped real-time substructure hybrid test system[J].Journal of Huazhong University of Science andTechnology(Urban Science Edition),2008,25(1):35―38,46.(in Chinese)
[9]Wang Tao,Yoshitake Nobuya,Pan Peng,Lee Tae-Hyung,Nakashima Masayoshi.Numerical characteristics ofpeer-to-peer(P2P)internet online hybrid test system andits application to seismic simulation of SRC structure[J].Earthquake Engineering and Structural Dynamics,2008,37:265―282.
[10]Pan Peng,Tomofuji Hiroshi,Wang Tao,NakashimaMasayoshi,Ohsaki Makoto,Mosalam Khalid M.Development of peer-to-peer(P2P)internet online hybridtest system[J].Journal of Earthquake Engineering andStructural Dynamics,2006,35:867―890.
[11]王瑾,蔡新江,田石柱.基于OpenSees的CFRP加固RC短柱抗震性能数值模拟[J].世界地震工程,2010,25(4):108―111.Wang Jin,Cai Xinjiang,Tian Shizhu.Numericalsimulation on seismic behavior of CFRP retrofitted RCshort column based on OpenSees[J].World EarthquakeEngineering,2010,25(4):108―111.(in Chinese)
[12]王强,冯帆,You Shawn,刘明.基于有限元软件的子结构拟动力试验技术[J].沈阳建筑大学学报(自然科学版),2010,26(6):1085―1089.Wang Qiang,Feng Fan,You Shawn,Liu Ming.Pseudo-dynamic test method with sub-structuretechnique based on finite element software OpenSees[J].Journal of Shenyang Jianzhu University(NaturalScience),2010,26(6):1085―1089.(in Chinese)
[13]郝伟.基于OpenFresco软件的混合试验方法[D].哈尔滨:哈尔滨工业大学,2011.Hao Wei.Openfresco-based seismic hybrid testingmethod[D].Harbin:Harbin Institute of Technology,2011.(in Chinese)
[14]Hubbard Paul,Calderon Jose,Gose Scott.ProtocolSpecification for the LabVIEW NTCP plugin[R].America:NEESit Technical Report(TR-2004-58),2004.
[15]PCI-1720U 4-channel isolated D/A output card withuniversal PCI bus user manual[M].Taiwan:AdvantechCo,Ltd.2005:1―32.
[16]PCI-1713U 32-ch isolated analog input card user manual[M].Taiwan:Advantech Co,Ltd.2009:1―30.
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