Express the isotropic moduli (tilde{E}) and (tilde{G}) of a randomly oriented fiber composite in Equations 6.43 in

Question:

Express the isotropic moduli $\tilde{E}$ and $\tilde{G}$ of a randomly oriented fiber composite in Equations 6.43 in terms of the orthotropic lamina stiffnesses $Q_{i j}$.

$\begin{aligned}
& \tilde{E}=\frac{\left(U_1-U_4\right)\left(U_1+U_4\right)}{U_1} \\
& \tilde{G}=\frac{U_1-U_4}{2} \\
& \tilde{\mathrm{v}}=\frac{U_4}{U_1}
\end{aligned} \tag{6.43}$

Fantastic news! We've Found the answer you've been seeking!