What is deflection torque and what causes it?

Deflection torque refers to the torque that causes a mechanical system, such as a beam or shaft, to bend or deform under applied loads. It arises from the combination of forces acting on the structure, leading to a change in its angular position or alignment. Factors such as material properties, cross-sectional shape, and the magnitude and direction of the applied forces contribute to the generation of deflection torque. This concept is crucial in engineering design to ensure structures can withstand operational stresses without excessive deformation.