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Yield stress vs critical load stress

  • Thread starter fonseh
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  • #1
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Homework Statement


In Euler's theory , it's stated that the critical stress of beam is always larger than the yield stress of beam ...I dont really undertstand the differnce between them . Critical stress is defined as the stress that the mximum stress applied before the beam starts to buckle....

Homework Equations




The Attempt at a Solution


Does the yield stress here means the stress which the beam start to deform plastically ?
Why shouldnt the yield stress is smaller than the critical stress ?

When object is subjected to stress , the beam will deform plastically before it starts to bend and break .... So , i think that yield stress is smaller than the critical stress [/B]
 
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Answers and Replies

  • #2
PhanthomJay
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Homework Statement


In Euler's theory , it's stated that the critical stress of beam is always larger than the yield stress of beam ...ISo , i think that yield stress is smaller than the critical stress
Who told you that?
 
  • #3
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Who told you that?
it's based on my understanding , correct me if I'm wrong
 
  • #4
PhanthomJay
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Euler buckling applies to long columns where the critical buckling stress is less than the yield stress.
 
  • #5
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Euler buckling applies to long columns where the critical buckling stress is less than the yield stress.
Do you mean for long column , the critical buckling stress is always less than the yield stress???
 

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