摘要
针对含圆孔有限大复合材料层板的应力集中问题,提出一种计算孔边应力分布及应力集中系数的方法:先利用经典层板理论,将复合材料层合板化归为各向异性板;再将各向异性板等效转换为一偏轴拉伸的单向纤维层板;最后利用含圆孔偏轴单向板的孔边应力计算公式来分析一般铺层层合板孔边应力集中情况。根据所推导的含孔有限宽度复合材料层合板应力集中系数的表达式,分析讨论了板宽/孔径比、铺层比例、铺层方式、材料性能参数等因素对孔边应力集中的影响。
Theoretical calculation method for stress concentrations in anisotropic plates with a circular hole was applied to composite laminates with a circular hole. Based on the classical laminated plate theory, a finite composite laminate with a circular hole was trea- ted as an anisotropic plate. Then the anisotropic plate equivalently was transformed into a unidirectional composite laminate subjected to off-axial loading. Finally stress concentration factor of composite laminates with a circular hole was obtained by means of a similar cal- culation formulas in unidirectional composite laminate subjected to off-axial loading. According to the derived expression, effects of the related parameters, such as d/W （ hole diameter-plate width ） ratio, fiber layups, constant of material property on stress concentration were analysed.
出处
《航空材料学报》
EI
CAS
CSCD
北大核心
2009年第2期71-75,共5页
Journal of Aeronautical Materials
关键词
含孔复合材料层板
各向异性板
孔边应力
应力集中系数
composite laminates with holes
anisotropic plate
stress distribution near hole
stress concentration factor
