宇航材料工艺2023，Vol.53Issue(6)：26-31,6.DOI:10.12044/j.issn.1007-2330.2023.06.004
复合材料变截面压杆变形性能研究
Deformation Performance Analysis of Composite Struts With Varying Cross-section
摘要
Abstract
In order to predict the deformation performance of composite compression struts with variable cross-section,the composite struts used in aerospace truss structure were taken as the research object in this paper.Firstly,wall panel of the composite struts was equivalent to an orthotropic plate,in approximation of an orthotropic strut,the principal direction was consistent with the axial direction of the strut,the composite strut could be approximated as an orthotropic strut.Based on the elastic deformation theory and small deformation assumption,the theoretical formula of equivalent axial compression stiffness was derived.Subsequently,accuracy of the theoretical formula of equivalent axial compression stiffness was verified by finite element method,results showed that:under conditions of different intermediate-radius and variable section-length,the deviation between values of the proposed theory and the finite element is within 3％;under the condition of different ply angles,the deviation between values of the theoretical and the finite element is within 2％.In conclusion,the theory can predict the axial deformation of composite struts with varying cross-section accurately.关键词
桁架/复合材料/变截面杆/轴向变形/计算理论Key words
Truss/Composite/Struts with varying cross-section/Axial deformation/Theory of computation分类
通用工业技术引用本文复制引用
马森,赵启林..复合材料变截面压杆变形性能研究[J].宇航材料工艺,2023,53(6):26-31,6.基金项目
中国载人航天领域预先研究项目(载人四批040101) （载人四批040101）
