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在进行复合材料设计以及对复合材料结构的安全破损估算时,复合材料在复杂应力状态下的强度准则是一个十分重要的工具。自从四十年代中叶复合材料问世以来,已有许多人从事这方面的理论研究与实验验证工作。目前对复合材料强度特性的研究大体上有两种方法,一是以细观力学为基础,对复合材料进行某些简化,建立计算模型,而后利用有限元分析对材料的强度进行计算,并与实验结果相比较;另一个是沿用传统的强度理论,针对复合材料的特点提出安全-破坏“准则”,利用某些简单实验结果,预测材料的安全-破损状态。前
The strength criterion of composites under complex stress conditions is a very important tool in the design of composite materials and the estimation of the safety of composites. Since the advent of composite materials in the mid-1940s, many people have engaged in theoretical research and experimental verification in this area. At present, there are basically two methods to study the strength characteristics of composite materials: one is to simplify the composite material based on meso mechanics, establish the calculation model, and then use the finite element analysis to calculate the strength of the material, and with The other one is based on the traditional theory of strength, the safety of the composite material - damage “criteria”, the use of some simple experimental results predict the material safety - damage state. before