基于界面元法研究了含有不确定参数复合材料层合板分层的问题,以区间数学为基础,将不确定参数区间定量化,提出一种含有不确定参数复合材料层合板分层的区间分析方法,并从数学证明和数值算例两方面与概率方法进行对比,验证区间分析方法的可靠性。通过区间分析方法给出了不确定参数对DCB(Double cantileverbeam)分层临界载荷的影响,并且得到在一定初始裂纹长度或铺层数量下,具有不确定参数DCB承载临界载荷的上下界值,这为不确定结构设计提供一定的依据。 Based on the interface element method, the problem of delamination of composite laminates with uncertain parameters was studied. Based on the interval math, the interval of uncertainty parameters was quantified. An interval analysis method of laminate delamination with uncertain parameters was proposed , And compared with the probability method from the mathematical proof and the numerical example to verify the reliability of the interval analysis method. The influence of uncertain parameters on the delamination load of DCB (Double cantilever beam) is given by the method of interval analysis, and the upper and lower bounds of the critical load with undetermined parameters DCB are obtained for a certain initial crack length or number of plies. Provide some basis for the design of uncertain structure.