372
R. dell’Erba
between the prediction of the discrete model and the predictions of standard FEM
simulations. In particular, some aspects in the geometry of the deformed configurations in the continuous case are found for the discrete system as well. Moreover, a
fracture algorithm was introduced, and some results, including periodic crack formation, were provided. Also in this case, a comparison with the continuous case shows a
good agreement between the fracture front geometry (discrete system) and the most
stressed area (continuous system).
We have also used an ASTM shape whose results will be compared in a real tensile
test experiment, but many questions are still open. We have collected some success
showing plausible deformation in different conditions, but when we consider a beam
under loading, we fail and the need to connect constitutive equations with the parameters of our tool emerges powerfully. However, the tool has demonstrated enough
flexibility to give chances that, once connected with the constitutive parameters, it
can describe the richness of behavior of different materials, including potentially
complex biological tissues.
References
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