正交叠层板最终拉伸破坏的细观力学研究  

MICROMECHANICAL STUDY ON ULTIMATE TENSILE FAILURE OF CROSS_PLY LAMINATES

作　　者：曾庆敦[1,2] 朱喜源 

机构地区：[1]华南理工大学交通学院 [2]广东省英德市新城建委质检站

出　　处：《华南理工大学学报（自然科学版）》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

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.

关 键 词：正交叠层板 细观力学 复合材料 最终拉伸破坏 

分 类 号：TB330.1[一般工业技术—材料科学与工程] O346.1[理学—固体力学]