Question

Von mises and Tresca criteria give different yield stress for

• A. Uni-axial stress
• B. Balanced bi-axial stress
• C. Pure shear stress
• D. All of these

Answer 1

Answer:

C. Pure shear stress

Maximum shear stress Theory (Tresca theory/Guest Theory/Coulomb Theory): Maximum shear stress under the uniaxial condition when the yield stress is fy is given as fy/2. Maximum shear strain energy theory (Von mises/ Distortion energy theory): Maximum shear stress = fy/√3 .. Von mises and Tresca criteria give different yield stress for Pure shear stress.