En Er 45 90 459 90 E12 90 459 90 E23 Figure 11.2 Variation of Stiffness Coefficients for a Misaligned Ply in which ac and a,are the coefficients of thermal expansion of the unidirectional layer along the longitudinal direction e and transverse direction t,respectively. Following the same procedure as in Section 11.1 with the same notations,one can write 月=m月oia=moiw 2003 by CRC Press LLCin which a
and at are the coefficients of thermal expansion of the unidirectional layer along the longitudinal direction
and transverse direction t, respectively. Following the same procedure as in Section 11.1 with the same notations, one can write Figure 11.2 Variation of Stiffness Coefficients for a Misaligned Ply e gÓ ˛ Ì ˝ Ï ¸ x,y [ ] T ¢ e gÓ ˛ Ì ˝ Ï ¸
,t = = ;{ } s
,t [ ] T { } s x,y TX846_Frame_C11 Page 230 Monday, November 18, 2002 12:26 PM © 2003 by CRC Press LLC