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首页> 外文期刊>International journal of non-linear mechanics >Locating non-linear components in two dimensional periodic structures based on NOFRFs
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Locating non-linear components in two dimensional periodic structures based on NOFRFs

机译:基于NOFRF的二维周期性结构中非线性分量的定位

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摘要

In practical engineering, there are many systems which can be modeled as a periodic structure constituted of repeating identical subsystems, and they have drawn extensive attentions from researchers and engineers. In this study, based on the concept of non-linear output frequency response functions (NOFRFs), an effective method is developed to detect the position of non-linear components in two dimensional periodic structures. The effectiveness of the method is demonstrated by numerical studies. As the information of non-linearity location could give an indication of certain features of structures, such as the locations of cracks in field of structural health monitoring, and could also be beneficial to make the mathematical modeling of non-linear structures, then the new method is of great practical significance in health monitoring or system identification for structural systems.
机译:在实际工程中,有许多系统可以建模为由重复的相同子系统组成的周期性结构,并且引起了研究人员和工程师的广泛关注。在这项研究中,基于非线性输出频率响应函数(NOFRF)的概念,开发了一种有效的方法来检测二维周期结构中非线性分量的位置。数值研究证明了该方法的有效性。由于非线性位置信息可以指示结构的某些特征,例如结构健康监测领域中的裂缝位置,也可能有利于进行非线性结构的数学建模,因此新的该方法对结构系统的健康监测或系统识别具有重要的现实意义。

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