【摘要】 考虑到层合板结构的多尺度特征,将均匀化方法与三维弹性子层板方法相结合,推导出一种新的方法,用以求解层合复合材料的等效刚度.该方法通过均匀化过程,将此三维刚度问题简化为二维问题,便于有限元网格划分及数据处理,提高计算效率.其潜在的优点是,可在二维规模上方便、准确地求得纤维方向含有周期性损伤时的损伤刚度.数值算例显示该方法具有较好的精度.更多还原

【Abstract】 A mixed homogenization method is developed by combining the general homogenization method with 3D-elastic sublaminate method. For a laminate it is a three- dimensional problem to determine the stiffness by the general homogenization method, while the 3D-elastic sublaminate method meets difficult in dealing with damaged laminate stiffness. The mixed homogenization method reduces the problem to two-dimensional scale for determining laminate stiffnesses with a potential advantage in calculating damaged stiffnesses. Comparison of the new method with general 3D-homogenization method shows excellent accuracy.更多还原