金属化纤维电磁防护复合材料拉伸强度及失效研究

Research on the Metal-Coated Fiber Electromagnetic Shielding Composites Tensile Strength and Failure

摘要: 本文以镀镍碳纤维作为主要增强材料；基于经典层合板理论进行了材料建模和性能参数设定，采用Hashin准则作为材料的失效行为判据，对该材料的拉伸强度进行了数值计算。用热压罐成型工艺制备了金属化纤维电磁防护复合材料，对该材料的室温拉伸强度性能进行了实测。对数值计算结果和实测结果进行分析对比，发现两者较为吻合，实现对电磁防护复合材料的力学和失效性能进行有效预判，从而缩短产品的结构力学设计周期。

Abstract: The electromagnetic shielding composites are composed of the nickel-coated carbon fibers as the main enforced material. Based on the classical laminate plate theory, the modeling and the simulation were done by FEA analysis. The tensile strength of the material was calculated by Hashin damage criteria which can predict the damage evolution effects. The composites test samples were prepared under autoclave process. The result of tensile strength of the composite was obtained by real test. By comparing the tensile calculation result and real test result, we found that calculation result fits the real test results well and the method can predict the strength and failure performance effectively and shorten design period of the structural products.