International Snow Science Workshop Proceedings - Montana State University Library

Item: MODE-III FRACTURE TOUGHNESS OF ANTICRACKS IN WEAK LAYERS: MODELLING AND EXPERIMENTS

• • Title: MODE-III FRACTURE TOUGHNESS OF ANTICRACKS IN WEAK LAYERS: MODELLING AND EXPERIMENTS

    Proceedings: International Snow Science Workshop Proceedings 2023, Bend, Oregon

    Authors:

    • Florian Rheinschmidt  [ Technical University of Darmstadt, Institute of Structural Mechanics and Design, Darmstadt, Germany ]
    • Valentin Adam  [ Technical University of Darmstadt, Institute of Structural Mechanics and Design, Darmstadt, Germany ]  [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
    • Melin Walet  [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
    • Jakob Schöttner  [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
    • Bastian Bergfeld  [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
    • Alec van Herwijnen  [ WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland ]
    • Philipp Weißgraeber  [ University of Rostock, Chair of Lightweight Design, Rostock, Germany ]
    • Philipp L. Rosendahl  [ Technical University of Darmstadt, Institute of Structural Mechanics and Design, Darmstadt, Germany ]

    Date: 2023-10-08

    Abstract: We propose an experimental setup and a closed-form model to identify the mode III fracture toughness of weak layers. The field experiment draws inspiration from out-of-plane double cantilever beam tests that are used to determine the mode III fracture toughness of adhesives and from classical propagation saw tests. For the calculation of energy release rates, our mechanical model uses the theory of bi-axial bending and torsion of laminate beams on an elastic foundation. These kinematics in combination with the principle of minimum potential energy result in an efficient and accurate description of stresses and energy release rates. Model and experiments distinguish contributions to the total energy release rate from all three fracture modes and, hence, can be used to determine mixed-mode interaction laws for weak layers.

    Object ID: ISSW2023_P1.60.pdf

    Language of Article: English

    Presenter(s): Florian Rheinschmidt

    Keywords: fracture mechanics, propagation saw test, cross-slope anticrack propagation

    Page Number(s): 481 - 487

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