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首页> 外文期刊>Journal of aerospace engineering >Calculation of Structural Response and Response Sensitivity with Improved Substructuring Method
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Calculation of Structural Response and Response Sensitivity with Improved Substructuring Method

机译：改进的子结构法计算结构响应和响应灵敏度

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Structural responses and response sensitivities are frequently required in structural health monitoring, whereas the computation of structural responses and response sensitivities of a large-size model is time consuming. This paper proposes a substructuring method for the fast computation of structural responses and response sensitivities. Structural responses are projected onto the range space of a few master substructural eigenvectors to construct a simplified vibration equation. The contribution of slave eigenvectors is compensated by a residue space to achieve high accuracy. Due to this compensation of the residue, a few master eigenvectors are needed to ensure the fast computation of structural responses and response sensitivities with high accuracy, avoiding the inclusion of numerous substructural eigenvectors. In addition, response sensitivities with respect to a parameter are calculated from master eigenvector derivatives of one substructure only, whereas derivatives of other substructures are zeroes. As simplified vibration equations are quite small, the proposed substructuring method can very quickly calculate structural responses and response sensitivities. The proposed method is verified by a frame structure and a bridge structure. (c) 2019 American Society of Civil Engineers.
机译：结构健康监测中经常需要结构应答和反应敏感性，而大尺寸模型的结构响应和响应敏感度的计算是耗时的。本文提出了一种用于快速计算结构响应和响应敏感性的子结构方法。结构响应被投射到少数大师子结构特征向量的范围空间上，以构建简化的振动方程。从特征向量的贡献通过残留空间补偿以实现高精度。由于该残余物的补偿，需要几种母征向量来确保以高精度快速计算结构响应和响应敏感性，避免包含许多子结构特征向量。另外，关于参数的响应敏感性由一个子结构的主特征vector衍生物计算，而其他子结构的衍生物是零。由于简化的振动方程非常小，所提出的子结构方法可以非常快速地计算结构响应和响应灵敏度。所提出的方法通过框架结构和桥接结构来验证。 （c）2019年美国土木工程学会。

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