复合材料界面附近的力学性态对于材料的性能和强韧化影响是非常重要的.首先研究和讨论了含裂纹的双相介质的J积分守恒定律的适用性问题,采用有限元法证明了当裂纹平行靠近界面时,其J积分数值与裂纹位置无关的假设.文中建立了一种双相介质界面附近存在斜裂纹的分析模型,用有限元和数值拟合相结合的方法,得到了在远场单轴拉应力作用下,斜裂纹处在不同介质中,近界面一端裂尖的Ⅰ型能量释放率近似计算公式,和相应的应力强度因子的计算方法.
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