dc.contributor.author	Willert, Emanuel
dc.date.accessioned	2020-04-23T13:13:19Z
dc.date.available	2020-04-23T13:13:19Z
dc.date.issued	2020-02-25
dc.date.updated	2020-02-25T16:09:20Z
dc.description.abstract	Impact tests are an important tool to analyze dynamic material properties of viscoelastic media in technology and biology. In this context, rigorous contact mechanical models of the collision problem are necessary to adequately interpret data from impact experiments. It is shown here theoretically that the coefficient of restitution in these types of testing is mainly a function of one specific material property, namely, the ratio between the loss and storage moduli of the viscoelastic probe at the characteristic timescale of the impact. Explicit dependencies of the restitution coefficient on factors like impact velocity, impactor shape, general material rheology, and functional grading—beyond the fact that those may influence the impact duration and the dynamic modulus associated with it—are weak.	en
dc.description.sponsorship	DFG, 414044773, Open Access Publizieren 2019 - 2020 / Technische Universität Berlin	en
dc.identifier.eissn	2297-3079
dc.identifier.uri	https://depositonce.tu-berlin.de/handle/11303/11006
dc.identifier.uri	http://dx.doi.org/10.14279/depositonce-9898
dc.language.iso	en	en
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	en
dc.subject.ddc	620 Ingenieurwissenschaften und zugeordnete Tätigkeiten	de
dc.subject.other	impact testing	en
dc.subject.other	restitution	en
dc.subject.other	viscoelasticity	en
dc.subject.other	rheological models	en
dc.subject.other	graded materials	en
dc.title	Ratio of Loss and Storage Moduli Determines Restitution Coefficient in Low-Velocity Viscoelastic Impacts	en
dc.type	Article	en
dc.type.version	publishedVersion	en
dcterms.bibliographicCitation.articlenumber	3	en
dcterms.bibliographicCitation.doi	10.3389/fmech.2020.00003	en
dcterms.bibliographicCitation.journaltitle	Frontiers in Mechanical Engineering	en
dcterms.bibliographicCitation.originalpublishername	Frontiers Media S.A.	en
dcterms.bibliographicCitation.originalpublisherplace	Lausanne	en
dcterms.bibliographicCitation.volume	6	en
tub.accessrights.dnb	free	en
tub.affiliation	Fak. 5 Verkehrs- und Maschinensysteme::Inst. Mechanik::FG Systemdynamik und Reibungsphysik	de
tub.affiliation.faculty	Fak. 5 Verkehrs- und Maschinensysteme	de
tub.affiliation.group	FG Systemdynamik und Reibungsphysik	de
tub.affiliation.institute	Inst. Mechanik	de
tub.publisher.universityorinstitution	Technische Universität Berlin	en

Ratio of Loss and Storage Moduli Determines Restitution Coefficient in Low-Velocity Viscoelastic Impacts

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