DESIGN OF LAMINATES 



6-187 



and the bending moments at the center of the panel for a 1 in. strip are: 



2 2 2 



a^ & i \ a^ 



x 



16 9 B 



T* pa 



1 + ( B 2 -2B 3 ) ^2 + V^3 b? Kv 2 ^) P - B l- 



^^Z b2 T "x"3 b^ LV"2~^3* 



a 2 a U 



B l + ^2 |2 -^U 



r &2_ 



+ V y [b iB3 + (l-B 2 2 + 3B 2 B 3 -2B 2 3 ) ^2_ 



(v + \ b 4)[K 2 ) b 4 +B 3 ( B i +2B 2b4 + i^) 



(6.93) 



16 , 



My = T P 3 ' 



J re U 



5 2 -2B 3 ♦ Dl b 2 ♦ V x b 2 



B 3 a 2 



B x b 2 + 1-B 2 2 + 3B 2 B 3 - 2B 3 2 



a 2 a^ 



B i + 2B ? 77 + T 



1 ^ b^ B]^ 



+ V. 



& 



_B 2 -2B 3 + ^b?_ 



+ lv y + V x? 



)p-+ B 3 IB 1 



8 2b? + ^ 



(6.94) 



Where: 



fxf_ 

 12X, 



3 , 3 Px c 3 (t 1 -t 2 ) 



h -V 3 - o 



x 1 - p £ 



y h 



\ f = 1 - O^f o yxf 



x c = ! - a xyc °yxc 



p„ « 1 - xc x 



x E^X, 



L xf A c 



D =V 



y 12A 



h 3_ p c3 .3P y c(t 1 -t 2 )2 



f L 



1 - P - 



y h 



U xz = cG xyc 



