摘要
本文采用三维有限元法对双切口剪切试验测定玻璃钢层合板的超低温层间剪切强度进行了理论分析和研究 ,解析用的层合板有效弹性系数由组分材料的弹性系数和织物结构的代表体积单元求得。数值解析发现 ,当切口间隔与厚度之比较小时 ,双切口剪切试验片可产生较均匀的剪切应力分布。通过与二维有限元解析结果的对比分析 。
The double-notch shear test method for determining interlaminar shear strength of glass cloth/epoxy laminates at low temperature was studied using a three-dimensional finite element analysis.Effective elastic moduli were determined under the assumption of uniform strain inside the representative volume element.Double-notch shsar specimens with lower notch separation-to-thickness ratios were found to yield more uniform shear stress.The shear stress distribution was compared with the results provided by a plane-strain finite element analysis and the three-dimensional effects were examined.
出处
《玻璃钢／复合材料》
CAS
CSCD
2000年第3期9-12,共4页
Fiber Reinforced Plastics/Composites
关键词
低温力学
玻璃钢
层合板
层间剪切强度
Cryomechanics glass cloth/epoxy laminates interlaminar shear strength double-notch shear tests shear stress distribution finite element method
