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Homework Help: Plastic flow/fracture

  1. Oct 8, 2006 #1
    Why is plastic flow promoted by large algebraic differences in the principal stress components, whereas fracture is promoted by a large algebraic sum of these stresses?
     
  2. jcsd
  3. Oct 8, 2006 #2

    radou

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    Homework Helper

    Hm, it would be great to present some examples, i.e. some expressions.
     
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