Conference - Modeling of ductile damage transition to fracture

SUBTITLES AVAILABLE ON THE VIDEO

Until our most recent release, we offered the possibility of simulating damage-to-fracture by means of the element-deletion (or kill-element) technique. While robust and algorithmically simple, this method has several disadvantages among which the virtual loss of mass and the strong dependency of the crack surface to the mesh size.

A completely new framework is introduced in this talk based on two concepts: (a) The Phase-Field approach, where a proxy variable is defined to manage damage as a physical field. It goes from 0 for the intact material to 1 for a fully damaged material. (b) The split-element approach, where the damaged elements are cut instead of deleted. The cutting direction is automatically obtained from the Phase-Field and its gradient which enables predicting the onset and propagation of cracks without ad hoc hypotheses.

Speaker: José Alves, Scientific Development Engineer & Hazem Eldahshan, Research & Development Engineer, Transvalor
Date: October 2021 - Transvalor International Simulation Days 2021

More info: https://www.transvalor.com/en/blog/improvement-damage-to-fracture-transition-model