DYNAMICS OF PACKAGE CUSHIONING 



445 



of the true value because amplification curves for pulse accelerations do not 

 diflfer greatly even for very different acceleration-time curves as long as the 



Fig. 3.8.1 — Dependence of amplification factor on shape of symmetrical acceleration pulse. 

 2. 



1.8t 

 1.6 



Fig. 3.8.2 — Effect of asymmetry of an acceleration pulse on amplification factor. 



amplitudes and frequencies are adjusted to the same scales. This is illus- 

 trated in Fig. 3.8.1 where the amplification factor curves are drawn for 

 square wave, half-sine wave, triangular and cubic pulses. 



