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Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 36, Issue 2, February 2014

Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 36, Issue 1, January 2014

Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 35

Study of ECAE mechanics by upper bound rigid block model with two degrees of freedom

Content Provider	Springer Nature Link
Author	Perig, Alexander V. Laptev, Alexander M.
Copyright Year	2013
Abstract	The mechanics of equal channel angular extrusion (ECAE) in a rectangular die was studied by upper bound method and rigid block model of deformation with two variables (two degrees of freedom). The appearance of a dead zone in the die external corner was assumed and verified by physical simulation using plasticine as a modeling material. The obtained dependences of ECAE pressure, total ECAE shear and geometrical parameters of dead zone upon friction factor were compared with corresponding results of upper bound rigid block analysis with one variable (one degree of freedom) and with the results of slip line analysis published by the authors elsewhere. It was demonstrated that an increase in degrees of freedom in an ECAE rigid block model from one to two results in much better approximation of the reference data of slip line analysis. The authors believe that an increase in the numbers of degrees of freedom and flexibility of a rigid block model generally leads to a better accuracy in modeling of other metal forming processes as well. As an example, the ECAE pressure of the aluminum 6061 alloy was calculated and compared with the experimental data from literature. A good agreement between them was found. The importance of consideration of friction in the inlet and outlet die channels was emphasized.
Starting Page	469
Ending Page	476
Page Count	8
File Format	PDF
ISSN	16785878
Journal	Journal of the Brazilian Society of Mechanical Sciences and Engineering
Volume Number	36
Issue Number	3
e-ISSN	18063691
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-12-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ECAE Rigid block model Upper bound analysis Degree of freedom Mechanical Engineering
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Industrial and Manufacturing Engineering Automotive Engineering Mechanical Engineering Aerospace Engineering

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