한국정밀공학회:학술대회논문집 (Proceedings of the Korean Society of Precision Engineering Conference)
- 한국정밀공학회 1994년도 추계학술대회 논문집
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- Pages.205-209
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- 1994
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- 2005-8446(pISSN)
UBET Analysis of the Combined Extrusion Using Shape Function
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Bae, Won-Byong
(Engineering Research Center for Net-Shape and Die Manufacturing, Pusan National University) ;
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Kim, Young-Ho-
(Engineering Research Center for Net-Shape and Die Manufacturing, Pusan National University) ;
- Kim, Jae-Cheol- (Graduate School, Pusan National University)
- 발행 : 1994.10.01
초록
The main purpose of this study is constructing new velocity fields on the base of shape function used in finite element method and showing the possibility of application it to metal forming processes. Utilizing the 8-node quadratic rectangular element, we expressed the velocity within the deformation region by interpolating the velocity of each nodal points. And the upper-bound formulation from this velocity fields was derived. In order to confirm the validity of this method we applied it to axisymmetic combined extrusion problem. the results of load show that this method is on better agreement with experiment than the conventional UBET, and also the flow pattern and profile of extruded part are reasonable.
키워드