Non-linear interface thermal conditions in three-dimensional thermoelastic contact problems
| Autor: | I. Ubero-Martínez, Luis Rodríguez-Tembleque, J. Vallepuga-Espinosa, J. Cifuentes-Rodríguez |
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| Rok vydání: | 2020 |
| Předmět: |
Thermal contact conductance
Materials science Mechanical Engineering Thermal contact 02 engineering and technology Mechanics 01 natural sciences Computer Science Applications 010101 applied mathematics Condensed Matter::Materials Science Nonlinear system 020303 mechanical engineering & transports Thermoelastic damping 0203 mechanical engineering Heat flux Modeling and Simulation General Materials Science Boundary value problem 0101 mathematics Contact area Boundary element method Civil and Structural Engineering |
| Zdroj: | Computers & Structures. 241:106354 |
| ISSN: | 0045-7949 |
| DOI: | 10.1016/j.compstruc.2020.106354 |
| Popis: | In this paper, a new and robust formulation to solve three-dimensional thermomechanical contact problems under non-linear interface thermal contact (ITC) conditions is presented. This methodology allows us to consider non-linear thermal contact conductance, including the presence of thermal interface materials (TIM), and convective conditions at the interstitial contact region. The Boundary Element Method (BEM) is assumed in order to compute the thermoelastic influence coefficients. The interface thermomechanical contact methodology is based on an augmented Lagrangian formulation where an efficient iterative Uzawa type scheme of resolution is proposed. The methodology is validated by comparison with benchmark solutions and later on, some additional examples are presented to study the influence of several ITC conditions, i.e., the presence of TIM doped with carbon nanotubes (CNT) and/or interstitial boundary conditions, in the thermoelastic contact variables (i.e., the contact area, the contact tractions, the temperature or the thermal flux distributions) of this kind of problems. |
| Databáze: | OpenAIRE |
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