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Introduction à la théorie des poutres - mms2 - MINES ParisTech

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Théorie de Timoshenko, application du principe <strong>des</strong> travaux virtuels<br />

Démonstration (suite).<br />

W ∗<br />

int + W ∗ ext = 0 ∀ U ∗ , avec V ∗ = 0, θ ∗ = 0, U ∗ (0&L) = 0, V ∗ (0&L) = 0, θ ∗ (0&L) = 0<br />

∫<br />

∫<br />

⇒ − N U,1 ∗ dx 1 + t U ∗ dx 1 = 0 ∀ U ∗ , avec U ∗ (0) = U ∗ (L) = 0<br />

C<br />

C<br />

∫<br />

∫<br />

⇒ − [NU ∗ ] L 0 + N ,1 U ∗ dx 1 + t U ∗ dx 1 = 0 ∀ U ∗ , avec U ∗ (0) = U ∗ (L) = 0<br />

C<br />

C<br />

⇒ N ,1 + t = 0<br />

∀x 1 ∈ C<br />

MMS 2012, Théorie de Timoshenko <strong>Introduction</strong> à <strong>la</strong> théorie <strong>des</strong> <strong>poutres</strong> 13/28

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