Abstract
Dynamics of fracture and its instabilities have been studied using two-dimensional visco-elastic models. Two models have been developed to describe disordered systems, in which the disorder appears either as topological disorder or as non-uniform mass distribution at mesoscopic length scale. The first model is based on a network of dissipative Born springs and the second model is based on finite element method with a similar dissipative force relaxation mechanism as in the first model. Results of computer simulations in a topologically disordered system show a very similar crack branching, branch bending and velocity oscillation behaviours as found in recent experiments. Also the conjectured scaling of branch bending has been tested favourably. In systems with non-uniform mass-distribution, crack curving and crack arrest were found to occur especially for strongly correlated disorder.
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Kaski, K., Heino, P. (1998). Computer Simulations of Fracture in Disordered Visco-elastic Systems. In: Landau, D.P., Mon, K.K., Schüttler, HB. (eds) Computer Simulation Studies in Condensed-Matter Physics X. Springer Proceedings in Physics, vol 83. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-46851-3_6
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DOI: https://doi.org/10.1007/978-3-642-46851-3_6
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