Question

Which theory of failure will you use for aluminum components under steady loading?

• A. Maximum principal stress theory
• B. Maximum shear stress theory
• C. Maximum strain energy theory
• D. Maximum principal strain theory

Answer 1

Answer:

B. Maximum shear stress theory

For Ductile Materials

Theories of failure	Shape
Maximum Shear Stress Theory (GUEST AND TRESCA'S THEORY)	Hexagon
Maximum Distortion Energy Theory (VON MISES AND HENCKY'S THEORY)	Ellipse

For brittle materials

Theories of failure	Shape
Maximum Principal Stress theory (RANKINE'S THEORY)	Square
Maximum Principal Strain theory (St. VENANT'S THEORY)	Rhombus
Total Strain Energy theory (HAIGH'S THEORY)	Ellipse