Question

Consider the following theories of failure.The most suitable for ductile materials is?

1. Maximum principal stress theory
2. Maximum strain theory
3. Maximum shear stress theory
4. Maximum distortion energy theory

• A. iii, iv
• B. i, ii
• C. None of these
• D. All

Answer 1

Answer:

A. iii, iv

Theories of failure include maximum principal stress, strain, shear stress, strain energy, and shear strain energy. Maximum shear strain energy theory is most suitable for ductile materials. Maximum principle stress theory is suitable for brittle materials. Tresca theory is the most conservative. All theories give similar results for uniaxial loading.