As an extension of traditional product fragility and damage boundary, the concept of dropping bruise fragility and bruise boundary was developed and the definition of them was presented in this paper.

• 作为传统跌落冲击脆值与破损边界理论的延伸,提出了跌落损伤脆值与跌落损伤边界的新概念以及相应的工程定义。