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dc.contributor.authorTamellini, Lorenzo
dc.contributor.authorChiumenti, Michele
dc.contributor.authorAltenhofen, Christian
dc.contributor.authorAttene, Marco
dc.contributor.authorBarrowclough, Oliver Joseph David
dc.contributor.authorLivesu, Marco
dc.contributor.authorMarini, Federico
dc.contributor.authorMartinelli, Massimiliano
dc.contributor.authorSkytt, Vibeke
dc.date.accessioned2020-03-18T10:09:36Z
dc.date.available2020-03-18T10:09:36Z
dc.date.created2019-11-04T09:15:51Z
dc.date.issued2019
dc.identifier.citationJOM: The Member Journal of TMS. 2019, 1-10.nb_NO
dc.identifier.issn1047-4838
dc.identifier.urihttp://hdl.handle.net/11250/2647346
dc.description.abstractIn industrial practice, additive manufacturing (AM) processes are often followed by post-processing operations such as heat treatment, subtractive machining, milling, etc., to achieve the desired surface quality and dimensional accuracy. Hence, a given part must be 3D-printed with extra material to enable this finishing phase. This combined additive/subtractive technique can be optimized to reduce manufacturing costs by saving printing time and reducing material and energy usage. In this work, a numerical methodology based on parametric shape optimization is proposed for optimizing the thickness of the extra material, allowing for minimal machining operations while ensuring the finishing requirements. Moreover, the proposed approach is complemented by a novel algorithm for generating inner structures to reduce the part distortion and its weight. The computational effort induced by classical constrained optimization methods is alleviated by replacing both the objective and constraint functions by their sparse grid surrogates. Numerical results showcase the effectiveness of the proposed approach.nb_NO
dc.language.isoengnb_NO
dc.publisherSpringernb_NO
dc.subjectAdditive manufacturingnb_NO
dc.subjectShape optimizationnb_NO
dc.subjectParametric optimizationnb_NO
dc.subjectSparse gridsnb_NO
dc.subjectSurrogate modelnb_NO
dc.titleParametric Shape Optimization for Combined Additive–Subtractive Manufacturingnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.rights.holderPostprint version of published article. The final publication is available at Springer via http://dx.doi.org/10.1007/s11837-019-03886-xnb_NO
dc.source.pagenumber1-10nb_NO
dc.source.journalJOM: The Member Journal of TMSnb_NO
dc.identifier.doi10.1007/s11837-019-03886-x
dc.identifier.cristin1743663
cristin.unitcode7401,90,26,0
cristin.unitnameMathematics and Cybernetics
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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