12 



V. DISCUSSION OF RESULTS 



A, Results for Configuration A 



The strain data and stress results are given in Tables Z through 

 7, and the normalized stress distribution and variation of shell thickness 

 are plotted in Figure IZ. This graphical representation of the stress dis- 

 tribution is self-explanatory, and the membrane stresses are shown to be 

 the highest stresses in the structure. The average experimentally deter- 

 mined membrane stress per unit load of 15o 5 psi/psi can be compared to 

 the theoretical membrane stress of 14,9 psi/psi, 



B, Results for Configuration B 



The strain data and stress results are given in Tables 8 through 

 12, and the normalized stress distribution across meridians (not coinci- 

 dent with the cable penetrations) is given in Figure 13, The membrane 

 stress on these meridians were again of larger magnitude than in the 

 vicinity of the port, and the average membrane stress was of about the 

 same magnitude as for Configuration A. 



The boundary stresses about the simulated cable penetrations and 

 bolt holes are given in Tables 11 and 12, with strain gage locations as 

 given in Figure 3. Insufficient data was obtained around the circumference 

 of these discontinuities to obtain meaningful, graphical representations; 

 however, the gages were located such that the given results provide the 

 significant data necessary for design purposes. 



