| |
Coefficient of mutual influence of second kind  and :
Let us define these coefficients as follows
 |
(5.82) |
Using Equation (5.79), these coefficients are given as
 |
(5.83) |
Reciprocal relationship for Poisson’s ratios:
We have reciprocal relations for lamina. Similarly, we can have reciprocal relations for laminate as well.
From Equation (5.63) and Equation (5.66), we can write
 |
(5.84) |
Similarly, from Equation (5.73) and Equation (5.75), we can write
 |
(5.85) |
Thus, combining Equation (5.83) and Equation (5.84), we get the required reciprocal relation for laminate as
 |
(5.86) |
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