Question

If modulus of elasticity of a material is $189.8GN/m^2$ and its Poisson's ratio is 0.30, what is the approximate value of shear modulus of the material?

• A. $73GN/m^2$
• B. $93.3GN/m^2$
• C. $103.9GN/m^2$
• D. $123.3GN/m^2$

Answer 1

The correct option is A $73GN/m^2$

The relationship between $E,G$ and $\mu$ is given as
$E=2G(1+\mu )$
$\Rightarrow G=\frac{E}{2(1+\mu )}=\frac{189.8}{2(1+0.30)}$
$\Rightarrow G=73GN/m^2$