Final answer:
The torsional assembly consists of a hollow aluminum segment and two brass tube segments. Torsion is the twisting or rotating of an object along its axis. Torsional rigidity is determined by the dimensions and shear moduli of the segments.
Step-by-step explanation:
The torsional assembly shown in Figure P6.46 consists of a hollow aluminum alloy segment (2) and two brass tube segments (1) and (3). Torsion refers to the twisting or rotating of an object along its axis. In this case, the assembly is subjected to torsional forces, causing deformation.
Torsional forces are generated when a torque is applied to an object. Torque is the product of the force applied and the distance from the axis of rotation. The torsional rigidity or stiffness of a material is characterized by its shear modulus (G). It represents the material's resistance to shear stress.
To calculate the torsional rigidity of the assembly, we need to know the dimensions and material properties of the segments. The shear modulus of aluminum alloy is 28 GPa, while the shear modulus of brass is 44 GPa. By considering the dimensions and shear moduli of the segments, we can determine the overall torsional rigidity of the assembly.