Chooose best ans. (A) The %u201Cfailure%u201D in ductile materials is generally
ID: 1828309 • Letter: C
Question
Chooose best ans.
(A) The %u201Cfailure%u201D in ductile materials is generally ____________, whereas for brittle materials, it is
______________.
Ultimate stress; yield stress
Yield stress; ultimate stress
Yield stress; fracture stress
Ultimate stress; fracture stress
(B) Which of the failure theories for ductile materials results in the largest failure envelope?
Maximum shear stress theory
Maximum distortion energy theory
Maximum normal stress theory
Mohr%u2019s failure criterion
None of the above
(C) Brittle materials tend to fail ___________________ compared to ductile materials.
more unexpectedly (i.e., with more variability)
at higher stresses
at lower stresses
a higher strains
None of the above
(D) Each of the failure theories that we have covered generally involve the comparison of
_________________ to _________________.
energy; stress
primary stresses; maximum shear stress
normal stresses; shear stresses
primary stresses; limiting stresses (yield or ultimate)
None of the above
Explanation / Answer
1.Yield stress; ultimate stress
2.Maximum shear stress theory
3.at lower stresses
4.normal stresses; shear stresses
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