DYNAMICS OF PACKAGE CUSHIONING 



417 



1.0 



1.5 



2.0 



2.5 



3.0 



Fig. 2.11.1 — Duration of acceleration pulse for cushioning with hyperbolic 

 tangent elasticity. 



2.12 Numerical Procedure for Finding Acceleration-Time Relation 

 FOR Class F Cushioning 



When the load-displacement curve does not resemble one of Classes A to 

 E, the acceleration-time relation may be found by numerical integration. 

 Combining the energy equation, 



m2X2 



I 



+ / P dxi = m^gh, 



(1.2.13) 



