Smoothed particle hydrodynamics analysis on semi-solid metal forming process

2011 ◽  
Vol 28 (1) ◽  
pp. 183-203 ◽  
Author(s):  
Hiroki Takamiya ◽  
Hiroshi Okada ◽  
Yuzuru Sakai ◽  
Yasuyoshi Fukui
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Metal Forming ◽  
Solid Metal ◽  
Forming Process ◽  
Particle Hydrodynamics ◽  
Metal Forming Process ◽  
Smoothed Particle ◽  
Semi Solid

Industrial Applications of Rheoforming Technology in China

2012 ◽  
Vol 192-193 ◽  
pp. 36-46
Author(s):  
W.C. Keung ◽  
Xiang Jie Yang ◽  
Wei Wei Shan
Keyword(s):  
Metal Forming ◽  
Academic Research ◽  
Industrial Applications ◽  
Solid Metal ◽  
Current Status ◽  
Forming Process ◽  
Metal Forming Process ◽  
Semi Solid ◽  
China Mainland ◽  
Rheological Forming

Rheological forming, a semi-solid metal forming process, is one of the manufacturing technologies for near net shape forming. The technology has attracted global academic research interests in recent years. This paper presents the current status of industrial applications of the semi-solid rheological forming technology in the China mainland. A variety of semi-solid slurry preparation techniques have been adopted including electromagnetic stirring and low superheat pouring. Dedicated semi-solid rheological forming equipment developed by the local manufacturers have been highlighted. This paper also makes an attempt to review the crucial factors for successful industrial application of the semi-solid metal forming process.

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.

Semi-Solid Processing of Aluminium and High Melting Point Alloys

1993 ◽  
Vol 207 (1) ◽  
pp. 1-8 ◽  
Author(s):  
P Kapranos ◽  
D H Kirkwood ◽  
C M Sellars
Keyword(s):  
Mechanical Properties ◽  
Metal Forming ◽  
Cast Alloy ◽  
High Melting Point ◽  
Forming Process ◽  
Stellite 21 ◽  
Complex Shapes ◽  
Metal Forming Process ◽  
Semi Solid ◽  
Conventionally Cast

Thixoforging (a semi-solid metal-forming process) of non-dendritic A357 aluminium alloy has been studied to assess the effects of process variables on the component integrity. Complete filling of the dies required ram velocities in excess of 300 mm/s and centre-line porosity in the thixoforged components was reduced by ram loads up to 55 kN. The mechanical properties of these thixoforgings were superior to conventionally cast alloy. Some work has also been carried out on M2 tool steel and Stellite 21 to demonstrate that these alloys may be thixoforged to complex shapes with good mechanical properties.

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.

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