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

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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


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