Strength of Materials - Theories of Failure

A steel plate having yield strength of 550 MPa, is subjected to biaxial state of stress as σx = σ and σy = -2σ. Using distortion energy theory and considering the factor of safety as 2, the permissible value of σ that ca...

The principal stresses at a point P in a solid are 70 MPa, -70 MPa and 0. The yield stress of the material is 100 MPa. Which prediction(s) about material failure at P is/are CORRECT?

At a critical point in a component, the state of stress is given as σₓₓ = 100 MPa, σᵧᵧ = 220 MPa, σₓᵧ = σᵧₓ = 80 MPa and all other stress components are zero. The yield strength of the material is 468 MPa. The factor of...

The principal stresses at a point in a critical section of a machine component are σ₁ = 60 MPa, σ₂ = 5 MPa and σ₃ = -40 MPa. For the material of the component, the tensile yield strength is σy = 200 MPa. According to the...