详细地论述了处理软弱夹层问题的两种方法———夹层法和连续体法.指出当夹层厚度很小时(可看作是裂缝),问题的实质是接触问题,可以利用夹层法解决;当夹层厚度不是很小时,问题的实质是夹层的强度问题,并且此时夹层的第二主应力不能忽视,应当按三维连续体进行分析.选用俞茂宏强度理论作为判别标准判断单元的状态,并给出算例. Two methods for dealing with the problem of weak interlayer are discussed in detail-sandwich method and continuum method. It is pointed out that when the interlayer thickness is small (which can be regarded as a crack), the essence of the problem is contact problem, which can be solved by sandwich method. When the thickness of the interlayer is not very small, the essence of the problem is the strength of the interlayer, and the second principal stress of the interlayer can not be neglected at this moment and should be analyzed by three-dimensional continuum. By using Yu Maohong intensity theory as judgment criterion, A