DC FieldValueLanguage
dc.contributor.authorDrücker, Sven-
dc.contributor.authorSchulze, Martina-
dc.contributor.authorIpsen, Hendrik-
dc.contributor.authorBandegani, Laura-
dc.contributor.authorHoch, Helge-
dc.contributor.authorKluge, Maximilian-
dc.contributor.authorFiedler, Bodo-
dc.date.accessioned2020-10-16T14:08:02Z-
dc.date.available2020-10-16T14:08:02Z-
dc.date.issued2021-01-01-
dc.identifier.citationInternational Journal of Mechanical Sciences (189): 105986 (2021-01-01)de_DE
dc.identifier.issn1879-2162de_DE
dc.identifier.urihttp://hdl.handle.net/11420/7588-
dc.description.abstractThe rapid progress in additive manufacturing enables the generation of complex structures that can be customized according to the application. For instance, lattice structures show potential in medical and lightweight applications as their mechanical properties can be scaled by the volume fraction of the cells according to the local requirements given by the load paths. In order to use lattice structures in design of structural parts, the mechanical properties need to be characterized. Due to the complex nature of the selective laser melting process, manufacturing imperfections as well as the microstructure play an important role and their effects can differ depending on volume fraction, building direction and especially load case (tension and compression). The aim of this study is to analyze these effects. In addition, a deeper understanding of the failure process is necessary which is gained by 3D digital image correlation and finite element simulations incorporating progressive damage. We found that surface defects are larger for horizontal struts printed directly on the powder bed and thus show a higher influence for specimens where building and loading direction are not aligned. Moreover, porosity leads to significantly different mechanical properties contingent on the load case. Depending on the volume fraction, different failure modes are observed which are captured and explained by finite element simulations allowing to avoid stress concentrations or undesired buckling in future designs. Finally, simulations of lattice structures are compared to computationally inexpensive simulations of unit cells with periodic boundary conditions. Good agreement is found and further insights into the influence of the load introduction are gained.en
dc.language.isoende_DE
dc.relation.ispartofInternational journal of mechanical sciencesde_DE
dc.subject3D printingde_DE
dc.subjectCompressionde_DE
dc.subjectFinite element modellingde_DE
dc.subjectPeriodic boundary conditionsde_DE
dc.subjectSelective laser meltingde_DE
dc.subjectTensionde_DE
dc.titleExperimental and numerical mechanical characterization of additively manufactured Ti6Al4V lattice structures considering progressive damagede_DE
dc.typeArticlede_DE
dc.type.diniarticle-
dcterms.DCMITypeText-
tuhh.abstract.englishThe rapid progress in additive manufacturing enables the generation of complex structures that can be customized according to the application. For instance, lattice structures show potential in medical and lightweight applications as their mechanical properties can be scaled by the volume fraction of the cells according to the local requirements given by the load paths. In order to use lattice structures in design of structural parts, the mechanical properties need to be characterized. Due to the complex nature of the selective laser melting process, manufacturing imperfections as well as the microstructure play an important role and their effects can differ depending on volume fraction, building direction and especially load case (tension and compression). The aim of this study is to analyze these effects. In addition, a deeper understanding of the failure process is necessary which is gained by 3D digital image correlation and finite element simulations incorporating progressive damage. We found that surface defects are larger for horizontal struts printed directly on the powder bed and thus show a higher influence for specimens where building and loading direction are not aligned. Moreover, porosity leads to significantly different mechanical properties contingent on the load case. Depending on the volume fraction, different failure modes are observed which are captured and explained by finite element simulations allowing to avoid stress concentrations or undesired buckling in future designs. Finally, simulations of lattice structures are compared to computationally inexpensive simulations of unit cells with periodic boundary conditions. Good agreement is found and further insights into the influence of the load introduction are gained.de_DE
tuhh.publisher.doi10.1016/j.ijmecsci.2020.105986-
tuhh.publication.instituteKunststoffe und Verbundwerkstoffe M-11de_DE
tuhh.type.opus(wissenschaftlicher) Artikel-
dc.type.driverarticle-
dc.type.casraiJournal Article-
tuhh.container.volume189de_DE
dc.relation.projectSteigerung des Leichtbaupotentials und Anwendbarkeit der additiven Fertigungsverfahren für die Luftfahrt-
dc.identifier.scopus2-s2.0-85092003799de_DE
tuhh.container.articlenumber105986de_DE
item.fulltextNo Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.creatorOrcidDrücker, Sven-
item.creatorOrcidSchulze, Martina-
item.creatorOrcidIpsen, Hendrik-
item.creatorOrcidBandegani, Laura-
item.creatorOrcidHoch, Helge-
item.creatorOrcidKluge, Maximilian-
item.creatorOrcidFiedler, Bodo-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.openairetypeArticle-
item.grantfulltextnone-
item.creatorGNDDrücker, Sven-
item.creatorGNDSchulze, Martina-
item.creatorGNDIpsen, Hendrik-
item.creatorGNDBandegani, Laura-
item.creatorGNDHoch, Helge-
item.creatorGNDKluge, Maximilian-
item.creatorGNDFiedler, Bodo-
crisitem.project.funderBundesministerium für Wirtschaft und Energie-
crisitem.project.funderid501100006360-
crisitem.project.funderrorid02vgg2808-
crisitem.project.grantno20W1501M-
crisitem.author.deptKunststoffe und Verbundwerkstoffe M-11-
crisitem.author.deptKunststoffe und Verbundwerkstoffe M-11-
crisitem.author.orcid0000-0002-7203-0992-
crisitem.author.orcid0000-0002-2734-1353-
crisitem.author.parentorgStudiendekanat Maschinenbau-
crisitem.author.parentorgStudiendekanat Maschinenbau-
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