Torsional stiffness

Torsional stiffness measures how resistant a material or structure is to twisting when a force is applied. Imagine grabbing a rod and trying to twist it; if it requires a lot of effort to turn, it has high torsional stiffness. Conversely, if it twists easily, it has low torsional stiffness. This property is important in engineering because it determines how well a component can withstand twisting forces without deforming or failing. High torsional stiffness is desirable in parts like drive shafts or aircraft fuselage, where maintaining shape under twisting loads is crucial for safety and performance.