Rapid finite element analysis of bulk metal forming process based on deformation theory

2009 ◽  
Vol 16 (5) ◽  
pp. 23-28 ◽  
Author(s):  
Peng Wang ◽  
Xiang-huai Dong ◽  
Li-jun Fu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Metal Forming ◽  
Deformation Theory ◽  
Forming Process ◽  
Element Analysis ◽  
Bulk Metal ◽  
Bulk Metal Forming ◽  
Metal Forming Process

scholarly journals Experimental And Theoretical Determination Of Forming Limit Curve

2015 ◽  
Vol 60 (3) ◽  
pp. 1881-1886
Author(s):  
J. Adamus ◽  
K. Dyja ◽  
M. Motyka
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Fracture Initiation ◽  
Forming Limit ◽  
Forming Process ◽  
Element Analysis ◽  
Metal Forming Process

Abstract The paper presents a method for determining forming limit curves based on a combination of experiments with finite element analysis. In the experiment a set of 6 samples with different geometries underwent plastic deformation in stretch forming till the appearance of fracture. The heights of the stamped parts at fracture moment were measured. The sheet - metal forming process for each sample was numerically simulated using Finite Element Analysis (FEA). The values of the calculated plastic strains at the moment when the simulated cup reaches the height of the real cup at fracture initiation were marked on the FLC. FLCs for stainless steel sheets: ASM 5504, 5596 and 5599 have been determined. The resultant FLCs are then used in the numerical simulations of sheet - metal forming. A comparison between the strains in the numerically simulated drawn - parts and limit strains gives the information if the sheet - metal forming process was designed properly.

scholarly journals Failure Prediction in Bulk Metal Forming Process

2014 ◽  
Vol 2014 ◽  
pp. 1-15 ◽  
Author(s):  
Ameen Topa ◽  
Qasim H. Shah
Keyword(s):  
Experimental Work ◽  
Metal Forming ◽  
Arbitrary Lagrangian Eulerian ◽  
Forming Process ◽  
Workpiece Material ◽  
Element Analysis ◽  
Bulk Metal ◽  
Bulk Metal Forming ◽  
Particle Hydrodynamics ◽  
Metal Forming Process

An important concern in metal forming is whether the desired deformation can be accomplished without defects in the final product. Various ductile fracture criteria have been developed and experimentally verified for a limited number of cases of metal forming processes. These criteria are highly dependent on the geometry of the workpiece and cannot be utilized for complicated shapes without experimental verification. However, experimental work is a resource hungry process. This paper proposes the ability of finite element analysis (FEA) software such as LS-DYNA to pinpoint the crack-like flaws in bulk metal forming products. Two different approaches named as arbitrary Lagrangian-Eulerian (ALE) and smooth particle hydrodynamics (SPH) formulations were adopted. The results of the simulations agree well with the experimental work and a comparison between the two formulations has been carried out. Both approximation methods successfully predicted the flow of workpiece material (plastic deformation). However ALE method was able to pinpoint the location of the flaws.

Advanced finite element analysis of die wear in sheet-bulk metal forming processes

2016 ◽  
Author(s):  
Bernd-Arno Behrens ◽  
Anas Bouguecha ◽  
Milan Vucetic ◽  
Alexander Chugreev ◽  
Daniel Rosenbusch
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Metal Forming ◽  
Element Analysis ◽  
Bulk Metal ◽  
Bulk Metal Forming ◽  
Die Wear

Numerical and Experimental Investigations of Multistage Sheet-Bulk Metal Forming Process with Compound Press Tools

2015 ◽  
Vol 651-653 ◽  
pp. 1153-1158 ◽  
Author(s):  
Bernd Arno Behrens ◽  
Anas Bouguecha ◽  
Milan Vucetic ◽  
Sven Hübner ◽  
Daniel Rosenbusch ◽  
...  
Keyword(s):  
Metal Forming ◽  
Solid Metal ◽  
Experimental Investigations ◽  
Metal Component ◽  
Forming Process ◽  
Bulk Metal ◽  
Bulk Metal Forming ◽  
Process Sequence ◽  
Metal Forming Process ◽  
Flange Forming

Sheet-bulk metal forming is a manufacturing technology, which allows to produce a solid metal component out of a flat sheet. This paper focuses on numerical and experimental investigations of a new multistage forming process with compound press tools. The complete process sequence for the production of this solid metal component consists of three forming stages, which include a total of six production techniques. The first forming stage includes deep drawing, simultaneous cutting and following wall upsetting. In the second forming stage, flange forming combined with cup bottom ironing takes place. In the last stage of the process sequence, the component is sized. To investigate and to improve process parameters such as plastic strain distribution, resulting dimensions and process forces, FEA is performed. Based on these results the developed process is designed.

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