在包装产品的易损度研究中引入冲击谱理论,可以得到临界加速度和临界速度改变量两个边界条件,从而深刻反映包装破损的力学本质。本文阐述了用冲击谱评价产品易损度的基本原理,并以矩形脉冲为例演示了利用冲击谱推导广义破损极限曲线的方法。 Introducing shock spectrum theory into the study of vulnerability of packaging products can obtain two boundary conditions of critical acceleration and critical speed change, which can deeply reflect the mechanical nature of package damage. This paper describes the basic principle of using impact spectrum to evaluate the vulnerability of products, and illustrates the method of deriving the generalized damage limit curve by using the impact spectrum with the rectangular pulse as an example.