Numerical characteristics of peer‐to‐peer (P2P) internet online hybrid test system and its application to seismic simulation of SRC structure
Numerical characteristics of peer‐to‐peer (P2P) internet online hybrid test system and its application to seismic simulation of SRC structure
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DOI：
10.1002/eqe.755
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发表时间：
2008-02
影响因子：
4.5
通讯作者：
Tao Wang;N. Yoshitake;P. Pan;Tae-Hyung Lee;M. Nakashima
中科院分区：
文献类型：
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作者：
Tao Wang;N. Yoshitake;P. Pan;Tae-Hyung Lee;M. Nakashima
针对某结构的地震模拟，开发了点对点（P2P）互联网在线混合测试系统。本文通过研究具有两轮拟牛顿测试方案的递推矩阵的谱半径，分析了系统的稳定性和精度。通过探索一个复杂结构的地震反应，进一步检验了该系统的适用性，这是一个顶部有钢塔的钢包钢筋混凝土（SRC）结构。该结构分为两个数值子结构和一个被试部分进行混合试验。数值子结构采用复杂的具有材料非线性的有限元模型进行模拟，以捕捉局部塑性。采用了分别适用于钢结构部分和钢塔的两种有限元程序：OpenSEES和ABAQUS。结果表明，该系统能够模拟具有明显非线性的复杂结构。与之前考虑两个弹性数值子结构的研究相比，本研究中迭代次数的增加并不显著，因为试验采用的时间间隔较小，相关的非线性受到限制。版权所有©2007 John Wiley & Sons， Ltd
The peer‐to‐peer (P2P) Internet online hybrid test system has been developed for the seismic simulation of a structure. In this study, the stability and accuracy of the system are investigated analytically by studying the spectral radius of the recursive matrix of the test scheme featuring a two‐round quasi‐Newton test scheme. The applicability of the system is further examined by exploring the seismic responses of a complex structure, a steel‐encased reinforced concrete (SRC) structure with a steel tower on the top. The structure is divided into two numerical substructures and one tested part for hybrid test. The numerical substructures are simulated by sophisticated finite element method (FEM) models with material nonlinearities to capture local plastifications. Two types of FEM programs, namely OpenSEES and ABAQUS, which are suitable for the SRC part and the steel tower, respectively, are employed. The results demonstrate that the P2P system is able to simulate complex structures with significant nonlinearities. As compared with the previous study in which two elastic numerical substructures were considered, increase in the number of iterations in this study is not significant, because the associated nonlinearities are limited due to the small time interval adopted in the test. Copyright © 2007 John Wiley & Sons, Ltd.