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Material modelling and physical based models with particular emphasis on high strain rates
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
Luleå University of Technology, Department of Engineering Sciences and Mathematics.
2009 (English)In: International Symposium on Plasticity 2009 / [ed] Akhtar Khan, 2009Conference paper (Other academic)
Abstract [en]

The problem of calibrating material models with tests in a limited range of conditions and then applying outside this range is discussed. This is the case when machining simulations are performed where very high strain rates (>50000s-1) can be obtained. The paper discusses the Johnson-Cook model, an empirical model that is common for high strain rate applications and a physical based dislocation density model. Test data for AISI 316L ranging from 0.001 to 10s-1 and room temperature up to 1300°C are used for calibration of the models and thereafter additional tests up to 9000s-1 at varying initial temperatures are compared with the model predictions

Place, publisher, year, edition, pages
Keyword [en]
Engineering mechanics - Solid mechanics
Keyword [sv]
Teknisk mekanik - Fastkroppsmekanik
Research subject
Material Mechanics
URN: urn:nbn:se:ltu:diva-27915Local ID: 1801de30-d798-11de-bae5-000ea68e967bOAI: diva2:1001106
International Symposium on Plasticity : 03/01/2009 - 08/01/2009
Godkänd; 2009; Bibliografisk uppgift: Three-page summary/compact paper printed in CD proceedings; 20091122 (lel)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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Lindgren, Lars-ErikWedberg, Dan
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