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Non-associated viscoplasticity coupled with an integral-type nonlocal damage model for mineral filled semi-crystalline polymers
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Highway and Railway Engineering.ORCID iD: 0000-0001-7333-1140
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2014 (English)In: Computers & structures, ISSN 0045-7949, E-ISSN 1879-2243, Vol. 134, 18-31 p.Article in journal (Refereed) Published
Abstract [en]

A non-associated viscoplastic model coupled with nonlocal damage under finite strain framework is developed to simulate the non-isochoric deformation and the damage process exhibiting strain-softening of a 20% mineral filled semi-crystalline polymer. The logarithmic spin tensor properties linking the Eulerian Hencky strain with the Cauchy stress is used thanks to hypoelasticity assuming the additive decomposition of the stretching into elastic and viscoplastic parts. The constitutive model with its nonlocal formulation is implemented in an efficient manner in a commercial implicit finite element code. The proposed model exhibits mesh-independent responses and is in agreement with strain evolution observed experimentally.

Place, publisher, year, edition, pages
2014. Vol. 134, 18-31 p.
Keyword [en]
Finite strain, Integral-type nonlocal damage, Mineral filled semi-crystalline polymer, Non-associated viscoplasticity, Strain softening
National Category
Materials Engineering
URN: urn:nbn:se:kth:diva-142320DOI: 10.1016/j.compstruc.2013.12.006ISI: 000331676500002ScopusID: 2-s2.0-84892749426OAI: diva2:702979

QC 20140305

Available from: 2014-03-05 Created: 2014-02-28 Last updated: 2014-03-27Bibliographically approved

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Balieu, Romain
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