Question

The Poisson's ratio for a perfectly incompressible linear elastic material is

• A. 1
• B. 0.5
• C. 0
• D. Infinity

Answer 1

The correct option is B 0.5

$E=3k(1-2\mu )$

For perfectly incompressible material;
$k=\infty$

$\therefore 1-2\mu =0$

$\mu =0.5$

Points to remember:
For perfectly incompressible material, Poisson's ratio = 0.5.