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A variational void coalescence model for ductile metals

Amir, Muhammad and Arciniega, Roman and El Sayed, Tamer (2011) A variational void coalescence model for ductile metals. Computational Mechanics, 49 (2). pp. 185-195.

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Abstract

We present a variational void coalescence model that includes all the essential ingredients of failure in ductile porous metals. The model is an extension of the variational void growth model by Weinberg et al. (Comput Mech 37:142-152, 2006). The extended model contains all the deformation phases in ductile porous materials, i.e. elastic deformation, plastic deformation including deviatoric and volumetric (void growth) plasticity followed by damage initiation and evolution due to void coalescence. Parametric studies have been performed to assess the model's dependence on the different input parameters. The model is then validated against uniaxial loading experiments for different materials. We finally show the model's ability to predict the damage mechanisms and fracture surface profile of a notched round bar under tension as observed in experiments.

Item type: Article
ID code: 37314
Keywords: coalescence model , welding, ductile materials, design engineering , void coalescence, Engineering design, Computational Theory and Mathematics, Computational Mathematics, Mechanical Engineering, Ocean Engineering, Applied Mathematics
Subjects: Technology > Engineering (General). Civil engineering (General) > Engineering design
Department: Faculty of Engineering > Design, Manufacture and Engineering Management
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 03 Feb 2012 11:51
    Last modified: 05 Sep 2014 14:48
    URI: http://strathprints.strath.ac.uk/id/eprint/37314

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