Tube Drawing Process Modelling By A Finite Element Analysis

Abstract

Drawing process is used in manufacturing thin-walled tubes, while reducing progressively their wall thickness and their inner and outer diameters. In this paper a stainless steel 316LVM is studied with one drawing process: hollow sinking. This study gets into different issues including elastoplastic behaviour, thermomechanical coupling, contacts, friction and numerical convergence. Experimental drawings are realized on a testing bench where forces, dimensional data and temperature are recorded. In a first approach, tensile tests lead us to use an elastoplastic constitutive equation with an isotropic hardening law. In simulations, an axisymetric steadystate thermomechanical model is used. Numerical results are compared with experimental results. Finally, in spite of some defaults, this study shows that finite element modelling is able to foresee accurately the thermomechanical behaviour of a tube during a drawing process. A better understanding and modelling of the thermomechanical behaviour of materials will improve the FEM simulation results.

Optimization on the cold drawing process of 6063 aluminium tubes

“…Moon et al [5] used a FE model to verify analytical methods that optimized the intermediate tube dimensions for a two steps process to have evenly distributed strains for each pass. Palengat et al [6] compared results of a FE model with two hardening laws for hollow sinking and plug drawing with experiments and they found good agreement using a constant Coulomb friction coefficient. Kuboki et al [7] simulated the tube drawing process to study effect of plug on having uniform residual stresses along the tube thickness.…”

Simulation of Drawing of Small Stainless Steel Platinum Medical Tubes—Influence of the Tool Parameters on the Forming Limit

“…The influence of these parameters on friction behaviour is not easily identifiable and measurable. Thus friction coefficient values are determined by inverse analysis [1]. To carry out such an analysis a load cell is put at the die exit and drawing forces are recorded during drawing tests.…”

“…In order to reduce time consumption during processing it is important to know the maximum plastic deformation a tube can undergo. The modelling of tube drawing process was previously studied in [1]. The originality of this work is first the material of study, a steel platinum alloy, and its particular mechanical behaviour including strain rate dependency.…”

Optimum Die Design for Single Pass Steel Tube Drawing with Large Strain Deformation

“…It is good for prediction deformation behavior with low cost of simulation time. Palengat et al (2007) have studied the hollow sinking and plug drawing processes of two materials, stainless steel 316LVM and coblat alloy L605, using FEM simulation. The elastoplastic constitutive equation with an isotropic hardening law was obtained from the tensile test .…”