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3d Preform Design Based on Geometric...

Kumaran, Karthikeyan,

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3d Preform Design Based on Geometrical Resemblance and Automation for 2D-Parts /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	3d Preform Design Based on Geometrical Resemblance and Automation for 2D-Parts // Karthikeyan Kumaran.
作者:	Kumaran, Karthikeyan,
面頁冊數:	1 electronic resource (139 pages)
附註:	Source: Masters Abstracts International, Volume: 85-06.
Contained By:	Masters Abstracts International85-06.
標題:	Aluminum. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30727227
ISBN:	9798381020823

3d Preform Design Based on Geometrical Resemblance and Automation for 2D-Parts /
Kumaran, Karthikeyan,

3d Preform Design Based on Geometrical Resemblance and Automation for 2D-Parts /Karthikeyan Kumaran. - 1 electronic resource (139 pages)

Source: Masters Abstracts International, Volume: 85-06.

The use of accurate preform dies and billets in forging can improve quality, conserve material, reduce manufacturing costs, and eliminate rehabilitative processes. This paper presents a Finite Element (FE) simulation-based preform die design method that might require a few iterations to find an optimal preform shape. The preforms are iteratively searched by backward tracing of material points in the FE models. The proposed scheme for establishing preform geometries for flash-less forging exploits the ability of FE software packages to track material points at any given process time and location. In this methodology, "flash" is considered a defect-one that can easily be induced by using a slightly larger volume of a preform shape than the exact volume that results is flash-less forging. Since the materials under plastic deformation seek the path of least resistance, other defects are bound to occur. Several case studies on preform designs of 3D forgings are presented. The viability of the methodology is assessed based on strain distribution patterns and forging loads. The methodology was also used on a few example parts which are currently forged with flash. The preform designs with this methodology resulted in a substantial reduction in the flash. The methodology is experimentally validated by forging cross joint and the experimental results are close to simulation. The proposed methodology can therefore be used to design preforms for the various forging shapes encountered in the forging industry. Besides aiding in the development of new progression sequences for flash-less die forging, the method could be used to modify preforms in a production line to minimize material waste due to flash. The method can also be used to probe preform shapes that occasionally result in defects caused by variability emanating from interface friction, die temperature fluctuation or other factors.

English

ISBN: 9798381020823Subjects--Topical Terms:

735071
Aluminum.

3d Preform Design Based on Geometrical Resemblance and Automation for 2D-Parts /
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520 $a The use of accurate preform dies and billets in forging can improve quality, conserve material, reduce manufacturing costs, and eliminate rehabilitative processes. This paper presents a Finite Element (FE) simulation-based preform die design method that might require a few iterations to find an optimal preform shape. The preforms are iteratively searched by backward tracing of material points in the FE models. The proposed scheme for establishing preform geometries for flash-less forging exploits the ability of FE software packages to track material points at any given process time and location. In this methodology, "flash" is considered a defect-one that can easily be induced by using a slightly larger volume of a preform shape than the exact volume that results is flash-less forging. Since the materials under plastic deformation seek the path of least resistance, other defects are bound to occur. Several case studies on preform designs of 3D forgings are presented. The viability of the methodology is assessed based on strain distribution patterns and forging loads. The methodology was also used on a few example parts which are currently forged with flash. The preform designs with this methodology resulted in a substantial reduction in the flash. The methodology is experimentally validated by forging cross joint and the experimental results are close to simulation. The proposed methodology can therefore be used to design preforms for the various forging shapes encountered in the forging industry. Besides aiding in the development of new progression sequences for flash-less die forging, the method could be used to modify preforms in a production line to minimize material waste due to flash. The method can also be used to probe preform shapes that occasionally result in defects caused by variability emanating from interface friction, die temperature fluctuation or other factors.
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