Abstract Modelling and simulation of power lines made of composite structures
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Modelling and simulation of power lines made of composite structures

机译：复合结构电力线的建模与仿真

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AbstractThe paper presents our new Functionally Graded Material (FGM) beam finite element that can be used for elastic-static, modal and buckling analysis of single beams or spatial beam structures. The material properties in a real beam can vary continuously in the longitudinal direction, while the variation with respect the transversal and lateral directions is assumed to be symmetric in a continuous or discontinuous manner (Murín et al., 2016). An application to elastostatic and modal analysis of high-voltage lines (single, double and triple bounded) with heterogeneous cross-sections is presented. The heterogeneous material properties of the cross-section are homogenized using the extended mixture rules. A linearized elastostatic analysis of power lines with the effect of tensile axial forces is proposed. Further, the axial, flexural and torsional eigenfrequencies and eigenmodes are calculated. The corresponding results of simple and bundle power lines obtained by our proposed finite element are compared with the ones obtained with standard beam finite elements. Further, the accuracy and efficiency of our proposed beam finite element is evaluated and studied. The results of the chosen analyzed case are verified by measurements on real electric conductor.
机译： 摘要 本文介绍了我们新的功能梯度材料（FGM）梁有限元，可用于弹性静力，模态和屈曲分析单梁或空间梁结构。真实光束中的材料特性可以在纵向上连续变化，而横向和横向的变化被假定为以连续或不连续的方式对称（Murín等人，2016）。提出了一种具有非均质横截面的高压线（单，双，三界）的弹力和模态分析的应用。使用扩展的混合规则将横截面的异质材料特性均匀化。提出了受拉轴向力影响的电力线线性弹性分析方法。此外，计算轴向，挠曲和扭转本征频率和本征模。将我们提出的有限元获得的简单和束状电力线的相应结果与标准梁有限元获得的结果进行比较。此外，对我们提出的梁有限元的准确性和效率进行了评估和研究。所选分析案例的结果通过在真实电导体上的测量来验证。

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