000196572 001__ 196572
000196572 005__ 20190604054714.0
000196572 0247_ $$2doi$$a10.1002/nme.4837
000196572 022__ $$a0029-5981
000196572 02470 $$2ISI$$a000349745600002
000196572 037__ $$aARTICLE
000196572 245__ $$aA non-local continuum damage approach to model dynamic crack branching
000196572 260__ $$c2015
000196572 269__ $$a2015
000196572 336__ $$aJournal Articles
000196572 520__ $$aDynamic crack branching instabilities in a brittle material are studied numerically by using a non-local damage model. PMMA is taken as our model brittle material. The simulated crack patterns, crack velocities and dissipated energies, compare favorably to experimental data gathered from the literature, as long as the critical strain for damage initiation as well as the parameters for a rate-dependent damage law are carefully selected. Nonetheless, the transition from a straight crack propagation to the emergence of crack branches is very sensitive to the damage initiation threshold. The transition regime is thus a particularly interesting challenge for numerical approaches. We advocate using the present numerical study as a benchmark to test the robustness of alternative non-local numerical approaches.
000196572 6531_ $$aBrittle failure
000196572 6531_ $$aPMMA
000196572 6531_ $$adynamic crack branching
000196572 6531_ $$afinite-element method
000196572 6531_ $$acontinuum damage model
000196572 6531_ $$anon-local approach
000196572 700__ $$0245996$$g220744$$aWolff, Cyprien
000196572 700__ $$0243327$$g198293$$aRichart, Nicolas
000196572 700__ $$0243317$$g178549$$aMolinari, Jean-François
000196572 773__ $$j101$$tInternational Journal for Numerical Methods in Engineering$$k12$$q933-949
000196572 8564_ $$uhttp://onlinelibrary.wiley.com/doi/10.1002/nme.4837/pdf$$zURL
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000196572 917Z8 $$x198293
000196572 917Z8 $$x198293
000196572 917Z8 $$x148230
000196572 937__ $$aEPFL-ARTICLE-196572
000196572 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000196572 980__ $$aARTICLE