Finite element analysis of piping defect formation in the sheet-extrusion process
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Publication Details
Author list: Phanitwong W., Thipprakmas S.
Publisher: World Scientific Publishing
Publication year: 2015
Journal: International Journal of Modeling, Simulation, and Scientific Computing (1793-9623)
Volume number: 6
Issue number: 1
ISSN: 1793-9623
eISSN: 1793-9615
Languages: English-Great Britain (EN-GB)
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Abstract
The pressing process, as compared to the machining process, makes good utilization of work piece material and shortens the production time, and as such it is increasingly used for production of complex shaped parts. A particular type of pressing is sheet-extrusion which controls the flow of material into special punch and die sets to produce an extruded shape. However, some particularly complex shaped parts cannot be made by sheet-extrusion due to the formation of piping defects. In this study, the finite element method (FEM) was used to investigate the formation of piping defects. In addition, the relationship between the characteristic dimensions of the extruded shape and the piping defect was also examined. Laboratory pressing experiments were performed to validate the accuracy of the FEM simulation results. Based on the stress distribution and velocity profiles within the extruded work piece, the relationship between the extruded shape and the piping defect was clearly identified. Furthermore, the FEM simulation results showed good agreement with the experimental results with regards to the dimensions of the extruded shape and the piping defect. ฉ 2015 World Scientific Publishing Company.
Keywords
piping feature, Sheet-extrusion
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