394 



BELL SYSTEM TECHNICAL JOURNAL 



8 10 12 14 16 18 



HEIGHT OF DROP (INCHES) 



20 22 24 



Fig. 1.15.3 — Maximum acceleration vs. height of drop for an 18.5 pound article supported 

 on cushioning with the load-displacement curve of Fig. 1.15.1. See Table II. 



From the last two columns of the table a curve of height of drop vs. the 

 corresponding acceleration may be plotted as in Fig. 1.15.3. 



PART II 

 ACCELERATION-TIME RELATIONS 



2.1 Introduction 



In Part I we were concerned primarily with the maximum acceleration of 

 the packaged item. In this part we shall study the details of the variation 

 of acceleration wnth time in order to have this information available for our 



