Vitesses de déformation - mms2
Vitesses de déformation - mms2
Vitesses de déformation - mms2
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Taux <strong>de</strong> glissement angulaireSi θ = π 2 à l’instant t donné, ˙γ =ΦdX 1 dX 2dx 1Xx dx 2• angle <strong>de</strong> glissement : γ = Θ − θ˙γ = − ˙θ••{ }} { { }} {dx 1 .dx 2 = ‖dx 1 ‖ ‖dx 2 ‖ cos θ = 2dx 1 .D ∼.dx 2Le champ <strong>de</strong> gradient <strong>de</strong>s vitesses 15/84