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Erschienen in:

2019 | OriginalPaper | Buchkapitel

26. Modeling High-Speed Impact Failure of Metallic Materials: Nonlocal Approaches

verfasst von : George Z. Voyiadjis, Babür Deliktaş

Erschienen in: Handbook of Nonlocal Continuum Mechanics for Materials and Structures

Verlag: Springer International Publishing

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Abstract

Development and application of advanced, computationally intensive multiscale (macro-, meso-, and micro-mechanically) physically based models to describe physical phenomena associated with friction and wear in heterogeneous solids, particularly under high velocity impact loading conditions. Emphasis will be placed on the development of fundamental, thermodynamically consistent theories to describe high-velocity material wear failure processes in combinations of ductile and brittle materials for wear damage-related problems. The wear failure criterion will be based on dissipated energies due to plastic strains at elevated temperatures. Frictional coefficients will be identified for the contact surfaces based on temperature, strain rates, and roughness of the surfaces. In addition failure models for microstructural effects, such as shear bands and localized deformations, will be studied.

The computations will be carried with Abaqus Explicit as a dynamic temperature-displacement analysis. The contact between sliding against each other’s surfaces is specified as surface-to-surface contact on the master-slave basis. The tangential behavior is defined as kinematic contact with finite sliding. The validation of computations utilizing the novel approach presented in this work is going to be conducted on the continuum level while comparing the obtained numerical results with the experimental results obtained in the laboratories in Metz, France. Reaction forces due to friction between the two specimens and temperature resulting from the dissipated energy during the friction experiment are going to be compared and discussed in detail. Additionally the indentation response at the macroscale, for decreasing the size of the indenter, will be used to critically assess and evaluate the length scale parameters.

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Vorheriges Kapitel Continuum Homogenization of Fractal Media

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Titel: Modeling High-Speed Impact Failure of Metallic Materials: Nonlocal Approaches
verfasst von: George Z. Voyiadjis
Babür Deliktaş
Verlag: Springer International Publishing
Buch: Handbook of Nonlocal Continuum Mechanics for Materials and Structures
Print ISBN: 978-3-319-58727-1

Electronic ISBN: 978-3-319-58729-5

Copyright-Jahr: 2019
DOI: https://doi.org/10.1007/978-3-319-58729-5_5

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