网状可展开天线经编金属丝网的力学性能分析

doi:10.3969/j.issn.1001-2400.2018.02.011

Abstract

Abstract:

The warp knitted metal mesh is the key material for the preparation of metal cable-mesh antennas, and its mechanical properties directly affect the mechanical and electrical properties of the antenna. In order to study its mechanical properties, based on the geometric model of the loop, a three-dimensional geometric model of the metal mesh is established, and the finite element method is used to realize the static analysis of the metal mesh. First, data points of the loop geometry are defined according to the three-dimensional experience geometric model of the loop and geometric model of the loop, and minimum repetitive structures are obtained by the NURBS curve, so as to obtain the geometric model of the metal mesh. Second, based on the augmented Lagrange multiplier method, constraint equations for the bonded contact are substituted into the potential energy functional, and the incremental finite element equation that considers the contact problem is established, so as to realize the analysis of mechanical properties of the metal mesh. Finally, the data comparison of the bi-axial tension simulation and experiment show the validity of the analysis method.

Key words: cable-mesh antennas, warp knitted metal mesh, minimum repetitive structure, geometric model of the loop, contact problems

ZHU Risheng;ZHANG Yiqun;YANG Dongwu;YANG Guigeng. Analysis of mechanical properties of the warp knitted metal mesh of cable-mesh antennas[J].Journal of Xidian University, 2018, 45(2): 59-65.

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Analysis of mechanical properties of the warp knitted metal mesh of cable-mesh antennas

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