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Journal article
An integrated approach to model strain localization bands in magnesium alloys
Computational mechanics, v 61(1-2), pp 119-135
2018
Abstract
Strain localization bands (SLBs) that appear at early stages of deformation of magnesium alloys have been recently associated with heterogeneous activation of deformation twinning. Experimental evidence has demonstrated that such “Lüders-type” band formations dominate the overall mechanical behavior of these alloys resulting in sigmoidal type stress–strain curves with a distinct plateau followed by pronounced anisotropic hardening. To evaluate the role of SLB formation on the local and global mechanical behavior of magnesium alloys, an integrated experimental/computational approach is presented. The computational part is developed based on custom subroutines implemented in a finite element method that combine a plasticity model with a stiffness degradation approach. Specific inputs from the characterization and testing measurements to the computational approach are discussed while the numerical results are validated against such available experimental information, confirming the existence of load drops and the intensification of strain accumulation at the time of SLB initiation.
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Details
- Title
- An integrated approach to model strain localization bands in magnesium alloys
- Creators
- K. P. Baxevanakis - Drexel UniversityC. Mo - Drexel UniversityM. Cabal - Drexel UniversityA. Kontsos - Drexel University
- Publication Details
- Computational mechanics, v 61(1-2), pp 119-135
- Publisher
- Springer Berlin Heidelberg
- Grant note
- 1434506 / Division of Civil, Mechanical and Manufacturing Innovation (http://dx.doi.org/10.13039/100000147)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000426467500009
- Scopus ID
- 2-s2.0-85029468024
- Other Identifier
- 991019168570104721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Mathematics, Interdisciplinary Applications
- Mechanics