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Comparison of Multiresolution Continuum Theory and Nonlocal Dame model for use in Simulation of Manufacutring Processes
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0002-9894-0556
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0002-2544-9168
2016 (engelsk)Inngår i: International Journal for Multiscale Computational Engineering, ISSN 1543-1649, Vol. 14, nr 1, s. 81-94Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Modelling and simulation of manufacturing processes may require the capability to account for localization behavior, often associated with damage/fracture. It may be unwanted localization indicating a failure in the process or, as in the case of machining and cutting, a wanted phenomenon to be controlled. The latter requires a higher accuracy regarding the modelling of the underlying physics, as well as the robustness of the simulation procedure. Two different approaches for achieving mesh-independent solutions are compared in this paper. They are the multiresolution continuum theory (MRCT) and nonlocal damage model. The MRCT theory is a general multilength-scale finite element formulation, while the nonlocal damage model is a specialized method using a weighted averaging of softening internal variables over a spatial neighborhood of the material point. Both approaches result in a converged finite element solution of the localization problem upon mesh refinement. This study compares the accuracy and robustness of their numerical schemes in implicit finite element codes for the plane strain shear deformation test case. Final remarks concerning ease of implementation of the methods in commercial finite element packages are also given.

sted, utgiver, år, opplag, sider
2016. Vol. 14, nr 1, s. 81-94
HSV kategori
Forskningsprogram
Materialmekanik; Centrumbildning - Centrum för högpresterande stål (CHS)
Identifikatorer
URN: urn:nbn:se:ltu:diva-3403DOI: 10.1615/IntJMultCompEng.2016016322ISI: 000374274000006Scopus ID: 2-s2.0-84963719840Lokal ID: 13b0c7c1-e817-4a05-82b9-e5bdf5fc5bc2OAI: oai:DiVA.org:ltu-3403DiVA, id: diva2:976261
Merknad

Validerad; 2016; Nivå 2; 20160418 (oluabi)

Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2019-03-29bibliografisk kontrollert

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