复合材料张量多项式强度准则的实验研究
AN EXPERIMENTAL STUDY ON THE TENSOR MULTINOMIAL CRITERION OF COMPOSITE
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摘要: 本文对强度多项式强度准则进行了理论分析,给出了不同F12相互作用系数的层合板强度包络线,表明了F12对强度包络线的影响,提出了一个确定F12的方法.用两种实验方法对张量多项式理论进行了验证,结果表明Tsai-Wu多项式准则在拉-剪应力空间与理论值符合得很好,在双向正应力的Ⅰ、Ⅳ象限内实验值与本文提出的确定F12的方法得到的值相近.Abstract: A eriterion of tesor mullinomial of strength is thcoreliual]y analysed and the strength envelopes of laminates with different F12 are given.The effect of F12 on tire envelopes is shown and a method to determine interaction coefficient F12 is proposed.The criterion is verified with two experiments.The results show that Tsai-Wu criterion of tensor multinomial is in excellent agreement with theoretical values in the tension-shear space.And the values from the experiments are in agreement with the tension-shear space.And the values from the experiments are in quadrant 1 and 4.
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