摘要
基于剪滞理论，研究了在０°方向承受拉伸的复合材料正交叠层板由９０°层的破坏及０°层中部分纤维断裂相互作用所导致的细观应力重新分布．在此基础上，采用随机临界核统计理论，对正交叠层板的最终拉伸破坏进行了细观统计分析．对［０／９０ｎ／０／９０ｎ／０］碳／环氧的计算结果表明，算得的最终拉伸强度能较好地吻合现有的实验结果．
On the basis of the shear_lag theory,this paper studies the microstress redistributions induced by the interaction of failure of 90° layers and the breakage of some fibers in 0° layer in cross_ply laminates under tension in 0° direction. At the same time, by using the random critical_core theory,a micro_statistical analysis for the ultimate tensile failure of cross_ply laminate is performed. Calculated results for [0/90 n /0/90 n /0] carbon/epoxy laminates show that the predictions of ultimate tensile strengths coincide relatively well with the existing experimental results.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1999年第5期28-34,共7页
Journal of South China University of Technology(Natural Science Edition)
基金
广东省自然科学基金
关键词
正交叠层板
细观力学
复合材料
最终拉伸破坏
cross_ply laminate
ultimate failure
shear_lag analysis
stress concentration
random critical_core
statistical analysis
strength
