Question

The principal stresses at a point in a bar are $160N/m{m}^2$ (tensile) and $80N/m{m}^2$ (compr.). the accompanying maximum shear stress intensity is

• A. 100 $N/m{m}^2$
• B. 110 $N/m{m}^2$
• C. 120 $N/m{m}^2$
• D. 140 $N/m{m}^2$

Answer 1

The correct option is C 120 $N/m{m}^2$

Maximum shear stress
$=\frac{{\sigma }_x-{\sigma }_y}{2}=\frac{160-(-80)}{2}$
= 120 MPa
So, option (c) is correct.