Question

The maximum shear stress theory predicts that the yield strength in shear is the yield strength in tension.

• A. half of
• B. same as
• C. one-fourth of
• D. double

Answer 1

Answer:

A. half of

The maximum shear stress theory states that the failure of a ductile material occurs when the maximum shear stress equals or exceeds the shear stress value at yield point in the uniaxial tensile test. According to this theory, the yield strength in shear is half of the yield strength in tension. This is expressed as $S_{y- s} /S_{y- t} =0.5$ The given chart shows the ratio of shear yield stress to tensile yield stress for various theories.