Damage mechanics of composite materials: II— a damaged-based notched strength model
Damage mechanics of composite materials: II— a damaged-based notched strength model
复制标题
复合材料的损伤力学：II——基于损伤的缺口强度模型
DOI：
10.1016/0266-3538(90)90078-j
复制
发表时间：
1990
影响因子：
9.1
通讯作者：
P. Beaumont
中科院分区：
文献类型：
--
作者：
M. Kortschot;P. Beaumont
建立了一种新的石墨-环氧复合材料缺口强度模型。在四部分系列的第二篇论文中，使用有限元模型来模拟观察到的交叉层合板的亚临界缺口尖端裂纹模式。该模型生成了显示0°层拉应力等高线的图，发现当0°层的最大拉应力超过该层的强度时，所有试件都失效。使用Weibull统计强度模型独立确定缺口尖端附近0°层的强度。
A new model of the notched strength of graphite-epoxy composites has been developed. In this second paper of a four-part series, a finite element model has been used to simulate observed subcritical notch tip cracking patterns in cross-ply laminates. The model produced maps displaying tensile stress contours in the 0° ply, and it was found that all specimens failed when the maximum tensile stress in the 0° ply exceeded the strength of that ply. The strength of the 0° ply in the vicinity of the notch tip was determined independently using a Weibull statistical strength model.