Minimal thermal modeling of two-way thermomechanically coupled plates for nonlinear dynamics investigation. Issue 3 (3rd March 2020)

• Record Type: Journal Article
• Authors: Saetta, Eduardo; Settimi, Valeria; Rega, Giuseppe
• Is Part Of: Journal of thermal stresses. Volume 43:Issue 3(2020)
• Page Start: 345
• Page End: 371
• Publication Date: 2020-03-03
• Subjects: Composite plates -- global dynamics -- reduced-order models -- thermal modeling -- transient/steady response -- unified thermomechanical coupling; Thermal stresses -- Periodicals; 620.1121
• DOI: 10.1080/01495739.2019.1704669
• Languages: English
• ISSNs: 0149-5739

Abstract

Abstract: Minimal thermal modeling of two-way thermomechanically coupled plates is addressed in the framework of a unified formulation of the underlying continuum problem. Variably refined reduced-order models are considered, and some main features of the relevant transient and steady responses to a variety of active thermal sources are investigated, by properly reconstructing 3D temperature configurations and energy balances. In comparison with a richer reduced model and available analytical solutions, a model with assumed cubic temperature distribution along the thickness has the advantage of being the minimal one still allowing to consider a wide set of boundary and body thermal excitations, while showing a comprehensive capability to reliably describe the thermal response. This appears of particular interest also in view of further pursuing a systematic, yet computationally demanding, investigation of the nonlinear dynamics of the coupled plate, in the cheapest possible way from both the mechanical and thermal viewpoint.