# 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!

## Step by Step Answer:

**Related Book For**

## Principles Of Composite Material Mechanics

**ISBN:** 9781439850053

3rd Edition

**Authors:** Ronald F. Gibson