A staggered coupling strategy for the finite element analysis of warm deep drawing process

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Martins, J.M.P.^1 ; Cunha, P.M.^1 ; Neto, D.M.^1 ; Alves, J.L.^2 ; Oliveira, M.C.^1 ; Laurent, H.^3 ; Menezes, L.F.^1

CEMUC, Department of Mechanical Engineering, University of Coimbra, Polo II, Rua Luís Reis Santos, Coimbra

3030-788, Portugal^1

CMEMS, Department of Mechanical Engineering, University of Minho, Campus de Azurém, Guimarães

4800-058, Portugal^2

Univ. Bretagne Sud, FRE CNRS 3744, IRDL, Lorient

F-56100, France^3

关键词: Computational costs;    Exchange of information;    Finite element codes;    Material formability;    Mechanical coupling;    Process parameters;    Thermo-mechanical coupling;    Thermomechanical problems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032033/pdf
DOI  :  10.1088/1742-6596/734/3/032033

来源: IOP

【 摘 要 】

The thermomechanical finite element analysis of warm forming processes enables an improved comprehension of the process parameters affecting the material formability. However, the thermal and mechanical coupling problem is still a challenge from the computational standpoint. A staggered strategy for the thermomechanical coupling problem is presented in this study, which is based on an isothermal split approach and allows the treatment of the two problems separately. The exchange of information between the mechanical and the thermal problem is performed to achieve a compromise between computational cost and accuracy. The proposed algorithm was implemented in DD3IMP in-house finite element code. Its performance is analysed and compared with a classical strategy commonly employed for solving thermomechanical problems.