Then, to evaluate the damage potential of shock to the system, a concept of combined damage boundary was proposed, with the minimum dimensionless critical velocity and the minimum dimensionless critical acceleration of all products as the two basic coordinate parame.

Then,to evaluate its damage potential,a concept of damage boundary surface is proposed,incorporating the effect of not only dimensionless critical velocity and critical acceleration but also frequency ratio.

Now Five-Step method or Six-Step method was usually used package design,they all need to define the fragility and damage boundary.

The shock spectra and the damage boundary curve of corrugated board under the action of half-sinusoid pulse are obtained using four steps of Runge-Kutta numeric method, and the influence of various factors on shock response is discussed.

This paper studied the damage border curv of the cubenonlinear packing system and the shock spemim with the b α lf- simeexxcitation.

This paper is mainly on the research of the shock spectrum and the damage border curve of the linear system package products under the exictation of halfsine wave,find peak sawtooth wave and rectangular wave.

Discussion on limitation of damage boundary theory;

The test method and steps of product damage boundary curves based on shock response spectrum were discussed.

Shock response spectrum and damage boundary curve of the model was solved by using Runge-kutta method.