Machine-translated by Google. Questions are authored in English.
Top

Discussion

Principal stresses at a point are those acting on planes where

  • A.The shear stress is zero
  • B.The direct stress is zero
  • C.The shear stress is a maximum
  • D.The strain is zero

Answer: A

Rotating the element until the shear vanishes leaves only direct stresses, and those are the principal values. The planes of maximum shear lie at forty-five degrees to them, which is why ductile metals shear along such planes.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.