Simulation of short crack propagation under hydrogen influence using a hybrid boundary element technique for anisotropic elastic solids |
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| Authors: | Volker Schippl Claus-Peter Fritzen Sven Brück Hans-Jürgen Christ Martina Schwarz Stefan Weihe |
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| Institution: | 1. Institut für Mechanik und Regelungstechnik – Mechatronik, Universität Siegen, Germany;2. Institut für Werkstofftechnik, Universität Siegen, Germany;3. Materialprüfungsanstalt, Universität Stuttgart, Germany |
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| Abstract: | A two-dimensional model for stage I short crack propagation on multiple slip planes under the influence of hydrogen is presented. It considers elastic-plastic material behaviour by allowing sliding on the active slip planes in the corresponding slip directions. A crack propagation law based on the crack tip sliding displacement is used to simulate crack growth. The activation of slip bands and the sliding on these active slip bands will be influenced by the local hydrogen concentration. The model is solved numerically using the boundary element method. (© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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