Numerical analysis of thermo-mechanical effects in solids including phase change and contact

• Grant number: 18/23957-2
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: May 01, 2019
• End date: April 30, 2024
• Field of knowledge: Engineering - Civil Engineering - Structural Engineering
• Principal Investigator: Rodolfo André Kuche Sanches
• Grantee: Péricles Rafael Pavão Carvalho
• Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated scholarship(s): 21/10316-1 - Implementation of the particle finite element method for solving fluid-structure interaction problems with thermal-coupling, BE.EP.DR

Abstract

Motivated by the simulation of structures behavior in high temperatures, as well as the numerical analysis of manufacturing processes with thermo-mechanical effects, this project proposes the study and development of numerical models in Lagrangian description for the simulation of thermo-mechanical problems with visco-elasto-plastic solids, viscous incompressible fluids and solid-liquid phase change, including contact models. In order to do so, we employ the positional finite element method, which uses positions as nodal parameters instead of displacements. In order to deal with the large magnitude of deviatoric strains that can appear in the fluid phase, we propose to use a combination of the finite element method with particle method (MEFP), which has been already applied to a wide range of free surface flow problems, fluid-structure interaction and solid mechanics. For the solid, we adopt a visco-elasto-plastic constitutive model valid for the finite strain regime, and for the fluid an incompressible Newtonian model. Starting from Node-to-Segment contact techniques with Lagrange multipliers, we propose the development of more accurate models considering the 3D case. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CARVALHO, PERICLES R. P.; CODA, HUMBERTO B.; SANCHES, RODOLFO A. K.. A large strain thermodynamically-based viscoelastic-viscoplastic model with application to finite element analysis of polytetrafluoroethylene (PTFE). EUROPEAN JOURNAL OF MECHANICS A-SOLIDS, v. 97, p. 20-pg., 2023-01-01. (18/23957-2)

CARVALHO, PERICLES R. P.; CODA, HUMBERTO B.; SANCHES, RODOLFO A. K.. Positional finite element formulation for two-dimensional analysis of elasto-plastic solids with contact applied to cold forming processes simulation. Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 42, n. 5, APR 20 2020. (18/23957-2)