复合材料由于重量轻、强度高等诸多优点使得其应用非常广泛,然而不可避免地也会在使用过程中出现损伤。受损结构的修补问题,成为日前急待解决的技术问题。在工程实际应用中,对受损复合材料层合板的常见处理方法就是在受损处用胶粘上一补片,用以弥补受损结构的不连续性。采用ANSYS参数化编程语言,以三维逐渐损伤理论为依据,考虑多种失效形式,按已有文献建立相应模型,并通过对比验证模型程序及算法的正确性。分别建立半穿透型及穿透型受损复合材料层合板受损修补模型,在拉伸载荷下对模型进行多参数计算,分别模拟受损不补与胶结修补模型的整个失效过程,取出其中最典型的三组数据进行对比。针对不同大小补片进行计算,得出胶结修补对复合材料层合板各铺层失效形式的具体影响。
Due to light weight, high strength and so many other advantages, composites are widely used. However inevitably there will also be damages when used for a few time. The problem of repairing damaged composite plates has become an issue that need to be solved soon. In the actual applications, the common processing method to the damaged composite plates is sticking a patch with bond. Using ANSYS parametric design language, the same model as the preference is set up and calculated with three dimensional progressive damage theory and various failure forms as the basis. The program which sets up the model and the calculation are proved correct comparing with them. Then semi-penetrated and penetrated repaired models of composite plates are set up. Then we calculate these repaired models with different parameters under the tensile load. The failure process of the damaged and repaired model is simulated. The most typical three groups of data are listed for comparing. These models with different sizes of the repair patches are calculated. The influence of bonded repairng composite plates on different failure forms for each layer is obtained at last.