Rosendahl, Philipp Laurens (2020):
From bulk to structural failure: fracture of hyperelastic materials.
Darmstadt, Technische Universität Darmstadt,
DOI: 10.25534/tuprints-00008693,
[Ph.D. Thesis]
Abstract
This thesis investigates the fracture of nearly incompressible hyperelastic media. It covers the different characteristics of bulk material failure under dilatational or distortional loads and develops a unified description of the corresponding failure surface. It proposes a coupled strain and energy failure criterion for the assessment of notch-induced crack nucleation and presents a weak interface model that allows for efficient stress, strain and failure analyses of hyperelastic adhesive lap joints. Theoretical concepts for the measurement of fracture properties of nonlinear elastic materials are provided. The methodology is developed using two exemplary hyperelastic silicones, DOWSIL 993 Structural Glazing Sealant and DOWSIL Transparent Structural Silicone Adhesive, and is validated using large sets of experiments of different loading conditions.
Item Type: | Ph.D. Thesis | ||||
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Erschienen: | 2020 | ||||
Creators: | Rosendahl, Philipp Laurens | ||||
Title: | From bulk to structural failure: fracture of hyperelastic materials | ||||
Language: | English | ||||
Abstract: | This thesis investigates the fracture of nearly incompressible hyperelastic media. It covers the different characteristics of bulk material failure under dilatational or distortional loads and develops a unified description of the corresponding failure surface. It proposes a coupled strain and energy failure criterion for the assessment of notch-induced crack nucleation and presents a weak interface model that allows for efficient stress, strain and failure analyses of hyperelastic adhesive lap joints. Theoretical concepts for the measurement of fracture properties of nonlinear elastic materials are provided. The methodology is developed using two exemplary hyperelastic silicones, DOWSIL 993 Structural Glazing Sealant and DOWSIL Transparent Structural Silicone Adhesive, and is validated using large sets of experiments of different loading conditions. |
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Place of Publication: | Darmstadt | ||||
Divisions: | 16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Institute of Structural Mechanics (FSM) |
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Date Deposited: | 10 Jun 2020 14:06 | ||||
DOI: | 10.25534/tuprints-00008693 | ||||
Official URL: | https://tuprints.ulb.tu-darmstadt.de/8693 | ||||
URN: | urn:nbn:de:tuda-tuprints-86934 | ||||
Referees: | Becker, Prof. Dr. Wilfried and Altenbach, Prof. Dr. Holm | ||||
Refereed / Verteidigung / mdl. Prüfung: | 27 May 2020 | ||||
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