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Validation and internal length scale determination for a gradient damage model: application to short glass-fibre-reinforced polypropylene
Institution:1. Faculty of Civil Engineering, Royal Military Academy, Avenue Renaissance 30, B-1000 Brussels, Belgium;2. Faculty of Civil Engineering, Delft University of Technology, P.O. Box 5048, 2600 GA Delft, The Netherlands;3. Faculty of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands;1. Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621907, China;2. China Academy of Engineering Physics, Mianyang 621900, China;1. Fachgebiet Festkörpermechanik, Technische Universität Darmstadt, Franziska-Braun-Str. 7, 64287 Darmstadt, Germany;2. Institut für Baustatik, Karlsruher Institut für Technologie, Kaiserstr. 12, 76131 Karlsruhe, Germany
Abstract:A strain-based transient-gradient damage model is used to analyse and describe the experimentally observed failure process in a Compact-Tension test carried out on short glass-fibre-reinforced polypropylene. Several aspects regarding the nonlocal character of the damage process in the material are emphasized and the intrinsic length scale is determined using available strain fields from an experimental analysis. A good agreement between theory and experiments has been found on a global and on a local level.
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