摘要
本文中对与中空圆截面簧丝轴线成±45°铺层的复合材料压缩圆柱螺旋弹簧进行刚强度分析。基于层合板理论,利用纤维复合材料平板的剪切模量及各向同性材料弹簧刚度公式,理论导出了该类复合材料弹簧的刚度表达式。同时,基于蔡-希尔强度公式和杆件扭转理论,分别求出弹簧的极限压缩载荷与最大压缩位移。计算结果与实验数据较为接近。本研究为该类复合材料弹簧的设计提供一定的理论参考。
The stiffness and strength of composite cylinder helical spring with hollow round wire and ±45° helical fiber plies are analyzed in this paper.Based on laminated plate theory and by using the shear modulus of fiber composite plates and the stiffness formula of isotropic springs,the expression of the stiffness of this kind of composite springs is derived.In addition,the ultimate compressive load and the maximum compressive displacement of spring are calculated respectively based on Tsai-Hill formula and bar torsion theory with the calculated results close to experimental data.This study provides certain theoretical references for the design of such composite springs.
出处
《汽车工程》
EI
CSCD
北大核心
2013年第8期755-758,722,共5页
Automotive Engineering
基金
清华大学自主科研计划项目(20101081758)资助
关键词
复合材料
圆柱螺旋弹簧
刚度
强度
composite material
cylinder helical springs
stiffness
strength
