Finite-element simulation of axisymmetric preforms in precision forging at elevated temperatures

Mamalis, AG; Manolakos, DE; Baldoukas, AK

dc.contributor.author	Mamalis, AG	en
dc.contributor.author	Manolakos, DE	en
dc.contributor.author	Baldoukas, AK	en
dc.date.accessioned	2014-03-01T01:11:57Z
dc.date.available	2014-03-01T01:11:57Z
dc.date.issued	1996	en
dc.identifier.issn	0924-0136	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11888
dc.subject	Elevated Temperature	en
dc.subject	Finite Element Simulation	en
dc.subject	Material Flow	en
dc.subject	Simulation Technique	en
dc.subject	Temperature Distribution	en
dc.subject	Upper Bound	en
dc.subject	Working Conditions	en
dc.subject.classification	Engineering, Industrial	en
dc.subject.classification	Engineering, Manufacturing	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Approximation theory	en
dc.subject.other	Computer simulation	en
dc.subject.other	Computer software	en
dc.subject.other	Deformation	en
dc.subject.other	Finite element method	en
dc.subject.other	Flow of fluids	en
dc.subject.other	High temperature operations	en
dc.subject.other	Kinematics	en
dc.subject.other	Loads (forces)	en
dc.subject.other	Strain	en
dc.subject.other	Stress concentration	en
dc.subject.other	Temperature distribution	en
dc.subject.other	Axisymmetric preforms	en
dc.subject.other	Forging loads	en
dc.subject.other	Metal flow	en
dc.subject.other	Precision forging	en
dc.subject.other	Preform profiles	en
dc.subject.other	Software package DYNA 3D	en
dc.subject.other	Upper bound elemental technique (UBET)	en
dc.subject.other	Forging	en
dc.title	Finite-element simulation of axisymmetric preforms in precision forging at elevated temperatures	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0924-0136(96)81423-3	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0924-0136(96)81423-3	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	The explicit FE code DYNA 3D was used to simulate precision forging at elevated temperatures (warm- and hot-working conditions) of two axisymmetric preforms, namely a conical shell and a bevel gear preform. For simple and quick calculations the coupled thermomechanical process was simulated as an isothermal mechanical process for a particular temperature distribution of the steel preform. The metal flow, preform profiles, forging loads, stress and strain distributions in the workpiece and the tooling are well predicted by this technique. The upper-bound elemental technique (UBET), a kinematic admissible upper-bound approach, was also employed for quick engineering-approximation prediction of the forging loads and metal flow for the axisymmetric preform. The results obtained from the two simulating techniques are in good agreement for the forging loads, up to a particular degree of deformation, whilst the material flow is well predicted by the FEM but is only approximated when UBET is employed.	en
heal.publisher	ELSEVIER SCIENCE SA LAUSANNE	en
heal.journalName	Journal of Materials Processing Technology	en
dc.identifier.doi	10.1016/0924-0136(96)81423-3	en
dc.identifier.isi	ISI:A1996UH13700015	en
dc.identifier.volume	57	en
dc.identifier.issue	1-2	en
dc.identifier.spage	103	en
dc.identifier.epage	111	en