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采用有限元法对短纤维／橡胶复合材料内应力传递和分配规律进行了初步探讨。结果表明：纤维末端的界面剪切应力和纤维中部的拉伸应力均最大，纤维末端仍传递一定的拉伸应力；纤维体积分数越大，纤维末端剪切应力集中越严重；纤维长径比越大，纤维上的最大拉伸应力也越大，但增幅趋于平缓；纤维模量增加，纤维上的拉伸应力集中也增加，但增幅减缓；基质模量增加，界面剪切应力集中和纤维拉伸应力集中均下降，但剪切应力和拉伸应力的绝对值仍然是升高的。
The principle of stress transfer and distribution in short fiber / rubber composites was discussed with finite element method. The results show that the interfacial shear stress at the fiber end and the tensile stress in the middle of the fiber are both the largest, and the fiber end still transmits some tensile stress. The larger the fiber volume fraction, the more concentrated the shear stress at the fiber end. Large, the maximum tensile stress on the fiber is larger, but the increase tends to be gentle; fiber modulus increases, the fiber tensile stress concentration also increased, but the increase slowed down; matrix modulus increased, the interface shear stress concentration and fiber Tensile stress concentration decreases, but the absolute value of shear stress and tensile stress is still increased.