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Spectral Element Method for Cable Harnessed Structure

机译:电缆利用结构的光谱元件方法

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This paper presents a predictive model of a cable-harnessed structure through using the Spectral Element Method (SEM) and this is compared to a finite element approach. SEM is an element-based method that combines the generality of the finite element method with the accuracy of spectral techniques. The exact dynamic stiffness matrices are used as the element matrices in the Finite Element Method (FEM). Thus it is possible to generate the meshes on geometric domains of concern. The spectral element can be assembled in the same terminology of the FEM. After assembly and application of the boundary conditions, the global matrix can be solved for response of model, repeatedly at all discrete frequencies because the dynamic stiffness matrices are computed at each frequency. Here we model a cable-harnessed structure as a double beam system. The presented SEM model can define location and number of connections very conveniently. Comparison is conducted between the FEM and SEM for several cases. The results show that the proposed SEM approach can be used as the exact solution of cable harnessed structures.
机译:本文通过使用光谱元件法(SEM)呈现了电缆利用结构的预测模型,并且将其与有限元方法进行比较。 SEM是一种基于元素的方法,其将有限元方法的一般性与光谱技术的准确性相结合。确切的动态刚度矩阵用作有限元方法(FEM)中的元素矩阵。因此,可以在关注的几何域上生成网格。光谱元件可以组装在FEM的相同术语中。在组装和应用边界条件之后,可以解决全局矩阵以用于模型的响应,以所有离散频率重复地,因为在每个频率下计算动态刚度矩阵。在这里,我们将电缆利用的结构造型为双光束系统。呈现的SEM模型可以非常方便地定义连接的位置和数量。几个案例的FEM和SEM之间进行了比较。结果表明,所提出的SEM方法可用作电缆利用结构的精确解决方案。

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