Question

A shaft is subjected to a bending moment M and a torque T. The equivalent bending moment $M_{eq}$ on the shaft is given by

• A. $\frac{M+\sqrt{M^2+T^2}}{4}$
• B. $\frac{M-\sqrt{M^2+T^2}}{4}$
• C. $\frac{M-\sqrt{M^2+T^2}}{2}$
• D. $\frac{M+\sqrt{M^2+T^2}}{2}$

Answer 1

The correct option is D $\frac{M+\sqrt{M^2+T^2}}{2}$

Equivalent bending moment $=\frac{M+\sqrt{M^2+T^2}}{2}$

Equivalent torsion $=\sqrt{M^2+T^2}$