复合材料低模量蒙皮结构的损伤特性探讨

摘要

低模量蒙皮设计概念是改进复合材料结构损 伤容限特性的一种有效的设计方法。它不仅可用于改善结构在拉伸、剪切载荷下的损伤容限 特性，同时也可提高蒙皮的抗冲击损伤特性。本文主要对用低模量蒙皮设计概念设计的复合 材料壁板在拉伸和剪切载荷作用下的损伤扩展特性、剩余强度及其设计方法进行探讨。%Low-modulus skin is an effective design method for improving damage tolerance behavior of composite structures. It not only improves damage tolerance behavior of composite structures, but also improves crack propagation properties of impact. In this paper, the crack propagation properties, residual strength and design method of low-modulus skin structures are studied under the action of tension and shear by means of theoretical analysis, finite element calculation and experiment.