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Rate of stress versus velocity gradient

  1. Feb 24, 2010 #1
    I don't understand the meaning of equation
    [tex]\int\dot{s}_{ij}\frac{\partial v_{j}}{\partial x_{i}}[/tex] dV
    where [tex]\dot{s}[/tex] is rate of change of stress, [tex]v_{j}[/tex] is velocity.

    Can anybody describe the meaning of this equation? Thank you.
    Last edited: Feb 24, 2010
  2. jcsd
  3. Feb 28, 2010 #2
    I don't remember that equation. vj is the velocity of the element under stress? What's V (on dV)?
  4. Feb 28, 2010 #3
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