复合材料科学与工程Issue(5)：125-131,7.DOI:10.19936/j.cnki.2096-8000.20250528.016
考虑初始挠度的复合材料长变距杆压杆稳定性分析及试验验证
Stability analysis and experimental validation of composite long variable pitch rod compression bar considering initial deflection
孙佳濛 1张飞 1董锦山 1陆裕辉1
作者信息
- 1. 中国直升机设计研究所,景德镇 333000
- 折叠
摘要
Abstract
The mechanical properties of composite long pitch rods are investigated,with special attention to the equivalent stiffness and critical load.Firstly,the equivalent stiffness is calculated by experimental and numerical simulation methods respectively,and the equivalent stiffness results of the two methods have an error of 1.41%.Secondly,based on the three methods of theoretical analysis,numerical simulation and test,the critical load under the existence of initial deflection of the composite long pitch rod is determined.The results show that the error of nu-merical simulation results relative to the test results is 7.9%,and the error of theoretical calculation results relative to the test results is 14.6%.On this basis,the significant effect of different initial deflections on the critical load is analyzed by numerical simulation,and when the initial deflection is 8.00 mm,the composite long pitch rod buckles at 10.73 kN,which does not meet the use requirements.Finally,the equations for the critical load and initial de-flection of the composite long pitch rod are proposed to provide a design basis for manufacturing and maintenance.关键词
复合材料变距杆/等效刚度/压杆稳定/初始挠度Key words
composite pitch rod/equivalent stiffness/stability of compression bar/initial deflection引用本文复制引用
孙佳濛,张飞,董锦山,陆裕辉..考虑初始挠度的复合材料长变距杆压杆稳定性分析及试验验证[J].复合材料科学与工程,2025,(5):125-131,7.
