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

Discussion

Which statement about open sections is TRUE?

  • A.They are statically indeterminate under shear
  • B.They develop a circulating shear flow in torsion
  • C.Their shear centre is always at the centroid
  • D.Their shear flow can be found from equilibrium alone

Answer: D

Correct answer: Their shear flow can be found from equilibrium alone

An open section has a free edge where the shear flow must be zero, and integrating from there determines the flow everywhere by equilibrium. A closed section has no free edge, is one degree redundant, and requires a compatibility condition - which is the extra step the cut-and-restore method supplies.

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

Post your comment

Please log in or register to post a comment.