Mesh objective simulations of large strain ductile fracture: A new nonlocal Johnson-Cook damage formulation for the Total Lagrangian Material Point Method de Vaucorbeil, Alban, Nguyen, VP and Mandal, TK 2022, Mesh objective simulations of large strain ductile fracture: A new nonlocal Johnson-Cook damage formulation for the Total Lagrangian Material Point Method, Computer Methods in Applied Mechanics and Engineering, vol. 389, doi: 10.1016/j.cma.2021.114388. Attached Files Name Description MIMEType Size Downloads Title Mesh objective simulations of large strain ductile fracture: A new nonlocal Johnson-Cook damage formulation for the Total Lagrangian Material Point Method Author(s) de Vaucorbeil, Alban orcid.org/0000-0002-7527-4159 Nguyen, VP Mandal, TK Journal name Computer Methods in Applied Mechanics and Engineering Volume number 389 Publisher P Publication date 2022-02-01 ISSN 0045-7825 Summary We present mesh objective simulations of large strain fracture of metals using a Total Lagrangian Material Point Method. The mesh objectivity is obtained by developing two nonlocal formulations of the well known Johnson-Cook damage criterion: an integral and a gradient enhanced formulation. Unlike previous nonlocal models in which the nonlocal variable is the plastic strain, we adopt the ratio of the plastic strain and the failure strain as the nonlocal variable. Using one simulation we demonstrate that the integral type nonlocal formulation results in incorrect damage initiation (i.e., not at the sample edge but within the sample). We then focus on the gradient enhanced formulation and use it to simulate three common benchmarks for quasi-static large strain ductile fracture of metals and one impact fracture of a metal plate hit by a blunt bullet. All the results exhibit mesh independence and are in good agreement with previous findings and experiments. DOI 10.1016/j.cma.2021.114388 Indigenous content off Field of Research 01 Mathematical Sciences 09 Engineering Persistent URL http://hdl.handle.net/10536/DRO/DU:30160257 Document type: Journal Article Collections: Institute for Frontier Materials GTP Research Related Links Link Description Connect to published version Go to link with your DU access privileges   Connect to Elements publication management system Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Fri, 31 Dec 2021, 13:24:50 EST Fri, 31 Dec 2021, 14:48:18 EST Sat, 22 Jan 2022, 01:32:57 EST Fri, 13 May 2022, 06:03:54 EST Fri, 08 Jul 2022, 08:16:34 EST Fri, 08 Jul 2022, 12:12:23 EST Filtered Full Citation counts:   Cited 1 times in TR Web of Science Cited 1 times in Scopus Search Google Scholar Access Statistics: 12 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Fri, 31 Dec 2021, 13:24:50 EST