折叠展开波导在外力作用下横截面的可能性形变力学分析

The analysis of possibility in forcing the folding waveguide’s cross-sectional deformation

近年来通信卫星技术朝大容量通信卫星发展,随着大容量的卫星转发器数量的增多,卫星有效载荷重量也随之增加。由于受到运载火箭的限制,有效载荷不能过重。设想设计一种可折叠展开波导来降低卫星有效载荷的重量。折叠展开矩形波导的横向压缩之后的展开无法使矩形波导恢复为标准的矩形横截面,必然引起波导传播常数、特性阻抗等参数的改变。目前关于折叠展开矩形波导在空间通信中的研究主要集中于横向问题的求解。采用2D有限元方法对不规则形状波导的横向可能性形变问题进行研究分析。由于折叠波导材料是单一材料,其弹性模量为定值,所受恒定的外力载荷。由应力和应变的物理学原理即可知其为节点受力-位移是线性关系,经由ANSYS分析得出的图像也印证了该分析。

In recent years, the communication satellites technology is in the development of large-capacity communication satellites, with the large number of satellite transponder, satellite payload weight has increased. Due to the restrictions of carrier rockets, the payload can not be too heavy. Therefore the idea of designing a folding waveguide to reduce the weight of the satellite payload. Folding waveguide horizontal compression can not be launched after the resumption of the waveguide to a standard rectangular cross-section is bound to cause waveguide propagation constant, characteristic impedance parameters change. So, it is launched on folding rectangular waveguide in space communications in the study focused mainly on horizontal issues to solve. This study used 2-D finite element method to analysis irregular waveguide possibility of horizontal deformation. As folded waveguide material is a single material, its elasticity modulus for the constant, suffered constant external force. By the stress and strain of the principles of physics to know node for the force-displacement is a linear relationship that is also confirmed by ANSYS analysis.