DYNAMICS OF PACKAGE CUSHIONING 



415 



-X, 



1.0 

 0.9 

 0.8 

 0.7 



So |k» 



% 0.5 

 0.4 

 0.3 

 0.2 

 0.1 



0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 



do 

 Fig. 2.10.2 — Pulse durations for cushioning with bi-linear elasticity. See equations 



- = - sm - + 



To TT Co 



To 



(2.10.15) and (2.10.16) 



^6 



1 



1 tan 



(2.10.15) 



(2.10.16) 



These two equations are plotted in Fig. 2.10.2 for several values of ^b/^o • 



2.11 Acceleratiox-Tme Relation for Hyperbolic Tangent 



Elasticity 

 The relation between acceleration and time for hyperbolic tangent 

 elasticity is found by the same procedure that was used for tangent elasticity 



