1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Twisting at shear center / centroid

  1. Nov 27, 2016 #1
    1. The problem statement, all variables and given/known data
    In the notes , the author stated that when the force is applied through the centorid of cross section , the channel will bend and twist.
    but , on the second page , the author stated that the shear center lies on an axis of symmetry of member's cross sectional area...
    So, i am confused whether the member will twist or not when the force P is applied thru the centroid or shear center ....

    Why the shear center is located at O , which is located outside of the C channel ?

    2. Relevant equations


    3. The attempt at a solution
    Is there anything wrong with the notes ?
     

    Attached Files:

    • 438.PNG
      438.PNG
      File size:
      76.3 KB
      Views:
      28
    • 439.PNG
      439.PNG
      File size:
      114.1 KB
      Views:
      23
  2. jcsd
  3. Nov 27, 2016 #2
    In the notes , it's also stated that to prevent twisting , the P should be applied at O , does it mean we have to apply the force thru the centoid and also at the O at the same time to prevent twisting ? i'm confused
     
  4. Dec 3, 2016 #3
    Bump
     
  5. Dec 28, 2016 #4
    what is the meaning of the force is applied along the once vertical , unsymmetrical axis that passes thru centroid ??? Since the applied force already passing thru centroid , it's already the symmertical axis , right ????
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted