The hoop stress in a riveted cylindrical shell of diameter (d), thickness (t) and subjected to an internal pressure (`rho`) is (where `eta` = Efficiency of the riveted joint)
If the modulus of elasticity for a given material is twice its modulus of rigidity, then bulk modulus is equal to
When a body is subjected to a direct tensile stress (`sigma_x` in one plane accompanied by a simple shear stress (`tau_(xy)`), the minimum normal stress is
When a closely-coiied helical spring of mean diameter (D) is subjected to an axial load (W), the deflection of the spring (`delta`) is given by (where d = Diameter of spring wire, n = No. of turns of the spring, and C = Modulus of rigidity for the spring material)
The strain energy stored in a hollow circular shaft of outer diameter (D) and inner diameter (d) subjected to shear stress is