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Nonlinear weakly curved rod by $\Gamma$-convergence (CROSBI ID 178983)

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Velčić, Igor Nonlinear weakly curved rod by $\Gamma$-convergence // Journal of elasticity, 108 (2012), 2; 125-150. doi: 10.1007/s10659-011-9358-x

Podaci o odgovornosti

Velčić, Igor

engleski

Nonlinear weakly curved rod by $\Gamma$-convergence

We present a nonlinear model of weakly curved rod, namely the type of curved rod where the curvature is of the order of the diameter of the cross-section. We use the approach analogous to the one for rods and curved rods and start from the strain energy functional of three dimensional nonlinear elasticity and do not presuppose any constitutional behavior. To derive the model, by means of $\Gamma$-convergence, we need to propose how is the order of strain energy related to the thickness of the body $h$. We analyze the situation when the strain energy (divided by the order of volume) is of the order $h^4$. That is the same approach as the one when F\"oppl-von K\'arm\'an model for plates and the analogous model for rods are obtained. The obtained model is analogous to Marguerre-von K\'arm\'an for shallow shells and its linearization is the linear shallow arch model which can be found in the literature.

weakly curved rod; Gamma convergence; shallow arch; asymptotic analysis

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Podaci o izdanju

108 (2)

2012.

125-150

objavljeno

0374-3535

10.1007/s10659-011-9358-x

Povezanost rada

Matematika

Poveznice
Indeksiranost