Journal of Solid Mechanics and Materials Engineering
Online ISSN : 1880-9871
ISSN-L : 1880-9871
Papers (Special Issue)
Simulation of Friction in Hydrostatic Extrusion Process
Pankaj TOMARRaj Kumar PANDEYYogendra NATH
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ジャーナル フリー

2013 年 7 巻 2 号 p. 235-244

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抄録
Accurate determination of friction at the die/billet interface in hydrostatic extrusion is a complex issue due to involvement of various operating parameters viz. billet velocity, die geometry, contact pressure, material parameter and the regime of lubrications prevailing at die/billet interface. Therefore, the objective of this paper is to investigate friction and friction stress at die/billet interface in hydrostatic extrusion process of aluminium based alloys. The friction stress at die/billet interface is numerically computed for three lubricants whose rheology is represented by Roelands' viscosity model. Investigations have been carried out for friction stress variations along the work zone for a wide range of extrusion ratios (A = 2 to 10), semi-die angles (θ = 100 to 200) and material parameters (G = 0.67 to 1.86). Moreover, the validation of the proposed model has been done with the published work available in the literature.
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© 2013 by The Japan Society of Mechanical Engineers
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