UHM WPE/HDPE层合板拉伸损伤扩展的有限元数值模拟  

FINITE ELEMENT NUMERICAL SIMULATION OF TENSILE DAMAGE PROPAGATION IN UHMWPE/HDPE LAMINATED COMPOSITES

作　　者：庄兴民[1] 晏雄[1] 

机构地区：[1]东华大学纺织学院纺织面料技术教育部重点实验室,上海200051

出　　处：《复合材料学报》2005年第5期141-146,共6页Acta Materiae Compositae Sinica

摘　　要：为了优化设计PE/PE层合板复合材料和准确评价其性能,必须深入地研究该类材料的损伤破坏机理,进而揭示其损伤扩展规律,预测因损伤的存在对材料刚度、强度等宏观性能的影响。基于拟三维模型的概念,提出了适合于数值模拟PE/PE层合板复合材料力学行为的修正模型。应用此有限元数值模型,对3种准各向同性UHMWPE/HDPE层合板在拉伸载荷条件下的损伤及损伤扩展进行了模拟,对这些材料的破坏机理进行了探讨,并预测了它们的强度。通过试验,可知应用上述模型进行数值模拟所获得的结果与试验数据是吻合的。证明了修正后的有限元数值模型的有效性。In order to optimize the designs and evaluate exactly the performances of PE/PE laminated composites, it is necessary to research the damage mechanisms of these materials, then to indicate the rules of the damage propagation, and to predict the effects on the various performances such as stiffness, strength and so on with the damage developing. A modified numerical model to simulate the mechanical behavior of PE/PE laminated composites was proposed based on the quasi-3-dimensional model concept. The damage propagation of three types of quasi-isotropic UHMWPE/HDPE laminated composites subjected to a tensile load was investigated by using the afore-mentioned model. The damage mechanism was analyzed and the strength was predicted for these materials. The experiments were done to verify the theoretical results. The results were consistent with those of the finite element numerical simulation. The validity of the modified numerical model is verified.

关 键 词：PE/PE层合板 损伤扩展 强度预测 拟三维模型 有限元 

分 类 号：TB330.1[一般工业技术—材料科学与工程]