摘要
用混合试验研究结构在强震下的抗震性能时,仍然选择简单的线性模型对数值子结构进行模拟显然难以保证实验结果的精度。为解决该问题,将有限元软件OpenSEES引入混合试验中以提高数值子结构的模拟精度。主要研究基于有限元软件OpenSEES和接口软件OpenFresco、实验控制dSPACE建立的混合试验系统,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:数值子结构内核OpenSEES、接口程序OpenFresco以及实验控制dSPACE之间具有良好的通讯性能,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。
Hybrid testing methods are used world-widely to disclose accurately and economically a seismic performances of structures, and play more and more important roles in seismic investigations nowadays. However, the numerical substructures are normally simulated with simple linear models, and the result accuracy is greatly reduced if serious elastic-plastic deformation occurs in structures when suffering a strong earthquake. To solve this problem, here, numerical substructures were simulated by using a professional finite element software OpenSEES. A hybrid testing system using the finite element software OpenSEES, the interface software OpenFresco, and the experimental control software dSPACE was proposed, and its effectiveness and accuracy were validated numerically and experimentally. It was shown that OpenSEES, OpenFresco, and dSPACE can work well together to conduct hybrid tests, and the proposed hybrid testing system has better stability and accuracy.
出处
《振动与冲击》
EI
CSCD
北大核心
2012年第22期45-52,共8页
Journal of Vibration and Shock
基金
国家自然科学基金(90715036
51161120360)
哈尔滨工业大学重大国际科技合作研究培育计划(HIT.ICRST.2010016)
哈尔滨工业大学基础研究杰出人才培育计划(HIT.BRET2.2010009)
中国博士后科学基金面上资助项目(20110491082)
特别资助项目(2012T50362)
黑龙江省博士后资助经费资助
哈尔滨工业大学科研创新基金资助(HIT.NSRIF2010018)
