Question

What is the angle between pricipal strain axis and maximum shear strain axis?

• A. 0°
• B. 30°
• C. 45°
• D. 90°

Answer 1

The correct option is C 45°

$\tan 2{\theta }_p=\frac{{\varphi }_{xy}}{{\epsilon }_x-{\epsilon }_y}$

$\tan 2{\theta }_s=-\left(\frac{{\epsilon }_x-{\epsilon }_y}{{\varphi }_{xy}}\right)$

Thus angle between principal strain axis and maximum shear strain axis is 45°.