(Solved): Bone screws are subjected to substantial torsional loads in many applications, so testing their pe ...

Bone screws are subjected to substantial torsional loads in many applications, so testing their performance under torsion is important. Consider the following simplified model of a bone screw with a solid tantalum head and a porous tantalum body: 4.0 mm solid head 2.3 mm 9.7 mm 2.7 mm The solid tantalum has a shear modulus G = 69 GPa, while the porous tantalum has a shear modulus G = 1.5 GPa. If end-applied torques T = 0.12 N-m are applied to this bone screw, answer the following questions (remember to show your work to receive maximum credit): a) (16 points) What are the maximum shear stresses in the head and body of the screw? b) (12 points) What are the maximum shear strains in the head and body of the screw? c) (12 points) What is the angle of twist of the entire screw? porous body