单一纤维多向缠绕薄壁圆筒的三维等效弹性模量计算

Estimation of 3D Effective Elastic Modulus for Fibre Multidirectional Filament-wound Tube

本文给出了一种基于层压板理论用来计算单一纤维多向缠绕薄壁圆筒三维等效弹性模量的方法,用此方法计算了玻璃纤维多向缠绕筒的三维等效弹性模量。有限元数值模拟和拉伸试验结果表明,通过本文计算方法得到的三维等效弹性模量是有效的,应用此方法可将复杂的纤维多向缠绕结构等效为具有各向异性性质的均质单一材料,大大降低应力分析的工作量。

A method was presented to estimate the 3D effective elastic modulus of multidirectional filament-wound tube. The effective elastic modulus of glass fibre wound tube was calculated. The finite element analysis and tensile test results show that effective elastic modulus based on the present method are accurate. The method can greatly reduce the size of problem for stress analysis, because complex structure can be equivalent to homogeneous anisotropic material.