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arXiv · 2501.06373

Analysis of a Shear beam model with suspenders in thermoelasticity of type III

Meriem Chabekh·Nadhir Chougui·Delfim F. M. Torres
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Abstract

We conduct an analysis of a one-dimensional linear problem that describes the vibrations of a connected suspension bridge. In this model, the single-span roadbed is represented as a thermoelastic Shear beam without rotary inertia. We incorporate thermal dissipation into the transverse displacement equation, following Green and Naghdi's theory. Our work demonstrates the existence of a global solution by employing classical Faedo-Galerkin approximations and three a priori estimates. Furthermore, we establish exponential stability through the application of the energy method. For numerical study, we propose a spatial discretization using finite elements and a temporal discretization through an implicit Euler scheme. In doing so, we prove discrete stability properties and a priori error estimates for the discrete problem. To provide a practical dimension to our theoretical findings, we present a set of numerical simulations.

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Meriem Chabekh, Nadhir Chougui, Delfim F. M. Torres. 2025-01-10. Analysis of a Shear beam model with suspenders in thermoelasticity of type III. https://doi.org/10.1016/j.cam.2024.116471

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