采用细观力学方法分析了陶瓷基复合材料在单向拉伸载荷作用下纤维泊松收缩对基体裂纹演化的影响,将库仑摩擦法则与拉梅公式相结合分析复合材料细观应力场,结合临界基体应变能准则以及界面脱粘断裂力学方法确定基体裂纹演化,讨论了界面摩擦系数、纤维泊松比、界面脱粘韧性以及纤维体积百分比等参数对界面脱粘和基体裂纹演化产生的影响,并与常界面剪应力假设下基体裂纹演化进行了对比. The effect of Poisson shrinkage on the evolution of matrix crack under the uniaxial tensile load was analyzed by the micromechanical method. The Coulomb friction law and the Lame formula were used to analyze the mesoscopic stress field of the composite, Matrix strain energy criterion and interfacial debonding fracture mechanics method to determine the evolution of matrix crack. The effects of interfacial friction coefficient, fiber Poisson’s ratio, interfacial debonding toughness and fiber volume percentage on interfacial debonding and matrix crack evolution were discussed. Compared with the crack propagation under the assumption of normal interface shear stress,