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工程力学  2013 

一种非迭代式的分布式子结构混合试验方法

DOI: 10.6052/j.issn.1000-4750.2011.10.0655, PP. 198-205

Keywords: 混合试验方法,分布式子结构试验,基于模型预测-修正,地震响应,非迭代式算法

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Abstract:

该文针对混合试验中的子结构试验积分算法进行研究,提出了一种基于模型的预测-修正算法(M-PC)。M-PC在预测时采用初始刚度求解动力方程以得到预测边界位移,与差分得到的预测位移相比,具有较高的精度和稳定性。M-PC是一种非迭代式的算法,对于子结构边界自由度较多的混合试验,该算法具有效率高的特点。该文首先介绍了M-PC积分算法的基本公式和进行子结构混合试验的具体步骤,然后通过编程实现了与OpenSEES和ABAQUS两种有限元软件的通用接口、电液伺服式加载装置的控制程序以及网络通讯功能,最后通过门式框架的子结构数值试验和物理试验对M-PC算法进行验证。结果表明:M-PC算法有效地预测静力边界位移,结构整体响应合理,正确地模拟了各子结构的非线性行为。

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