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Micromechanics of rupture in combined tension and shear
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
2007 (English)In: Mechanical Behavior of Materials X, Pts 1and 2 / [ed] Nam, SW; Chang, YW; Lee, SB; Kim, NJ, STAFA-ZURICH: TRANS TECH PUBLICATIONS LTD , 2007, Vol. 345-346, 681-684 p.Conference paper (Other academic)
Abstract [en]

A micromechanics model based on the theoretical framework of plastic localization into a band introduced by Rice [1] is developed. The model employed consists of a planar band with a square array of equally sized cells, with a spherical void located in the centre of each cell. The micromechanics model is applied to analyze the rupture mechanisms associated with mixed mode ductile fracture. The stress state is characterized by the stress triaxiality T and the Lode parameter mu which adequately describe the stress state ahead of a crack tip under mixed mode loading of an isotropic elasto-plastic material. The main focus is the influence of mu on void growth and coalescence behavior. It is shown that the Lode parameter exerts a strong influence upon this behavior.

Place, publisher, year, edition, pages
STAFA-ZURICH: TRANS TECH PUBLICATIONS LTD , 2007. Vol. 345-346, 681-684 p.
Keyword [en]
micromechanics, mixed mode ductile fracture, void coalescence, localization
National Category
Materials Engineering
URN: urn:nbn:se:kth:diva-39442ISI: 000247370400162ScopusID: 2-s2.0-34248578518OAI: diva2:440140
Conference: 10th International Conference on Mechanical Behavior of Materials. Busan, SOUTH KOREA. MAY 27-31, 2007
Available from: 2011-09-12 Created: 2011-09-09 Last updated: 2011-09-12Bibliographically approved

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