3D FEM simulation of the whole cycle of aluminium extrusion throughout the transient state and the steady state using the updated Lagrangian approach

2003 ◽  
Vol 134 (3) ◽  
pp. 383-397 ◽  
Author(s):  
J. Zhou ◽  
L. Li ◽  
J. Duszczyk
Keyword(s):  
Steady State ◽  
Fem Simulation ◽  
Transient State ◽  
Lagrangian Approach ◽  
3D Fem ◽  
Aluminium Extrusion ◽  
Updated Lagrangian Approach ◽  
Updated Lagrangian

scholarly journals Numerical Investigation of Plastic Strain Homogeneity during Equal-Channel Angular Pressing of a Cu-Zr Alloy

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1505
Author(s):  
Jittraporn Wongsa-Ngam ◽  
Nitikorn Noraphaiphipaksa ◽  
Chaosuan Kanchanomai ◽  
Terence G. Langdon
Keyword(s):  
Steady State ◽  
Plastic Strain ◽  
Equal Channel Angular Pressing ◽  
Fem Simulation ◽  
Effective Plastic Strain ◽  
3D Fem ◽  
Cross Sectional ◽  
Angular Pressing ◽  
Strain Homogeneity ◽  
Zr Alloy

A three-dimensional finite element method (3D FEM) simulation was carried out using ABAQUS/Explicit software to simulate multi-pass processing by equal-channel angular pressing (ECAP) of a circular cross-sectional workpiece of a Cu-Zr alloy. The effective plastic strain distribution, the strain homogeneity and the occurrence of a steady-state zone in the workpiece were investigated during ECAP processing for up to eight passes. The simulation results show that a strain inhomogeneity was developed in ECAP after one pass due to the formation of a corner gap in the outer corner of the die. The calculations show that the average effective plastic strain and the degree of homogeneity both increase with the number of ECAP passes. Based on the coefficient of variance, a steady-state zone was identified in the middle section of the ECAP workpiece, and this was numerically evaluated as extending over a length of approximately 40 mm along the longitudinal axis for the Cu-Zr alloy.

scholarly journals A natural element updated Lagrangian approach for modelling fluid structure interactions

2007 ◽  
Vol 16 (3-4) ◽  
pp. 323-336
Author(s):  
Andrés Galavís ◽  
David González ◽  
Elias Cueto ◽  
Francisco Chinesta ◽  
Manuel Doblaré
Keyword(s):  
Lagrangian Approach ◽  
Fluid Structure Interactions ◽  
Fluid Structure ◽  
Natural Element ◽  
Updated Lagrangian Approach ◽  
Updated Lagrangian

scholarly journals 3D-FEM Simulation of Hot Rolling Process and Characterization of the Resultant Microstructure of a Light-Weight Mn Steel

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 569
Author(s):  
Ana Claudia González-Castillo ◽  
José de Jesús Cruz-Rivera ◽  
Mitsuo Osvaldo Ramos-Azpeitia ◽  
Pedro Garnica-González ◽  
Carlos Gamaliel Garay-Reyes ◽  
...  
Keyword(s):  
Hot Rolling ◽  
Thermomechanical Processing ◽  
Computational Simulation ◽  
Effective Strain ◽  
Fem Simulation ◽  
Rolling Process ◽  
3D Fem ◽  
Hot Rolling Process ◽  
Mn Steel

Computational simulation has become more important in the design of thermomechanical processing since it allows the optimization of associated parameters such as temperature, stresses, strains and phase transformations. This work presents the results of the three-dimensional Finite Element Method (FEM) simulation of the hot rolling process of a medium Mn steel using DEFORM-3D software. Temperature and effective strain distribution in the surface and center of the sheet were analyzed for different rolling passes; also the change in damage factor was evaluated. According to the hot rolling simulation results, experimental hot rolling parameters were established in order to obtain the desired microstructure avoiding the presence of ferrite precipitation during the process. The microstructural characterization of the hot rolled steel was carried out using optical microscopy (OM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). It was found that the phases present in the steel after hot rolling are austenite and α′-martensite. Additionally, to understand the mechanical behavior, tensile tests were performed and concluded that this new steel can be catalogued in the third automotive generation.

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