Simplified numerical approach for incremental sheet metal forming process
TypeArticles dans des revues avec comité de lecture
The current work presents a finite element approach for numerical simulation of the incremental sheet metal forming (ISF) process, called here ‘‘ISF-SAM’’ (for ISF-Simplified Analysis Modelling). The main goal of the study is to develop a simplified FE model sufficiently accurate to simulate the ISF process and quite efficient in terms of CPU time. Some assumptions have been adopted regarding the constitutive strains/stresses equations and the tool/sheet contact conditions. A simplified contact procedure was proposed to predict nodes in contact with the tool and to estimate their imposed displacements. A Discrete Kirchhoff Triangle shell element called DKT12, taking into account membrane and bending effects, has been used to mesh the sheet. An elasto-plastic constitutive model with isotropic hardening behaviour and a static scheme have been adopted to solve the nonlinear equilibrium equations. Satisfactory results have been obtained on two applications and a good correlation has been shown compared to experimental and numerical results, and at the same time a reduction of CPU time more than 60% has been observed. The bending phenomenon studied through the second application and the obtained results show the reliability of the DKT12 element.
Showing items related by title, author, creator and subject.
Comparison between incremental deformation theory and flow rule to simulate sheet-metal forming processes ROBERT, Camille; DELAMEZIERE, Arnaud; DAL SANTO, Philippe; BATOZ, Jean-Louis (ELSEVIER, 2012)Numerical simulation of the deep drawing process for the manufacture of aeronautical or automotive components should predict with good accuracy the behaviour during the forming operation, taking into account, the material ...
Development of a numerical model for the understanding of the chip formation in high-pressure water-jet assisted machining AYED, Yessine; ROBERT, Camille; GERMAIN, Guénaël; AMMAR, Amine (Elsevier, 2016)The aim of this study is to develop a new numerical cutting model that includes fluid structure interaction and to take into account heat transfer between the water-jet, the workpiece and the chip. This has been achieved ...
AYED, Yessine; ROBERT, Camille; GERMAIN, Guénaël; AMMAR, Amine (2017)The development of computation means has allowed the simulation of complex mechanical problems. The first simulations of manufacturing processes at the microstructure scale, namely in the field of machining, have recently ...
NASRI, Mohamed Aziz; AMMAR, Amine; CHINESTA, Francisco; ROBERT, Camille; EL AREM, Saber; MOREL, Franck (Springer, 2016)Forming processes usually involve irreversible plastic transformations. The calculation in that case becomes cumbersome when large parts and processes are considered. Recently Model Order Reduction techniques ...
Proper Generalized Decomposition (PGD) for numerical calculation of polycrystalline aggregates under cyclic loading NASRI, Mohamed Aziz; ROBERT, Camille; EL AREM, Saber; MOREL, Franck; AMMAR, Amine (2015)none