纤维增强复合材料横向弹性常数

基金项目: 国家自然科学基金资助项目

TRANSVERSE ELASTIC CONSTANTS FOR FIBER REINFORCED COMPOSITE MATERIALS

Department of Engineering Mechanics, Shanghai Jiao Tong University, Shanghai 200030

摘要

摘要: 本文提出了一个计算单向纤维增强复合材料横向弹性模量和泊松系数的边界元计算模型.泊松系数ν₁₂、ν₃₂、ν₁₃和ν₂₃的计算结果与实验结果吻合得很好.碳纤维增强复合材料横向模量E₂和E₃的计算值也和实验结果完全吻合,而玻璃纤维/环氧横向模量E₂、E₃的计算值却比实测值偏小约10%～25%.予计这是由于本文计算模型未考虑界面层的性能,它对材料的宏观性能产生了较明显的影响.
- 横向弹性模量 /
- 泊松系数 /
- 边界元法
Abstract: This paper proposes a BEM computation model to calculate the transverse effective moduli and Poisson's ratios of unidirectional fiber reinforced composites.The computation results of ν₁₂,ν₃₂,ν₁₃ and ν₂₃, are in good agreement with the experimental results.The E₂,E₃ for carbon-fiber reinforced composites coincide with the experimental results excellently.However,for glass-fiber reinforced epoxy composite,the computation results of E₂,E₃ are about 10-25 percent lower.For the latter,it is guessed that there may exist remarkable interlayer effect,which was not considered in the computation process.
- transverse modulus /
- Poisson’s ratio /
- BEM