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基于能量等效原理，采用三维有限元方法，考虑短纤维位向的随机分布对复合材料弹性模量的影响，利用有限元能量法对δ－Ａｌ２Ｏ３（Ｓａｆｉｌ）／Ａｌ合金复合材料的弹性模量进行了预测。预测结果与实验结果和目前常用的几种预测方法进行了比较，表明该方法是合理、准确的。
Based on the principle of energy equivalence, a three-dimensional finite element method was adopted to consider the influence of the random distribution of short fiber orientation on the elastic modulus of the composites. The elastic modulus of δ-Al2O3 (Safil) / Al alloy composites Made a prediction. The results of the prediction are compared with the experimental results and several commonly used prediction methods, which show that the method is reasonable and accurate.