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Published in: Journal of Materials Engineering and Performance 3/2017

13-02-2017

Analysis of Deformation Damage and Fracture of 7050 Aluminum Alloy During Double Shear Based on Experiment and Simulation

Authors: Han Chen, Fuguo Li, Jun Cao, Jinghui Li, Qianru Wang, Weina Li

Published in: Journal of Materials Engineering and Performance | Issue 3/2017

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Abstract

Based on the finite element simulation and experimental analysis, this paper mainly studies the deformation damage and fracture of 7050-H112 aluminum alloy during double shear based on the elastic strain energy density. The analyses of deformation damage and fracture for ends-free and ends-constrained specimens in complex stress and strain states have been carried out. The different stress and strain states which are characterized by stress triaxiality and strain Lode parameter have important effects on damage and fracture according to the simulation and experimental results. The final fracture is mainly caused by tensile stress both for specimens with ends free and ends constraint. Meanwhile, the shear planes are mainly in a state of shear strain when fracture occurs according to the analysis of stress triaxiality and strain Lode parameter. Three characteristic areas (radiation area, fiber area and shear lips) are observed from fracture morphology and account for different proportions on fracture surface for ends-free and ends-constrained specimens. The simulated results on the damage evolution and fracture from finite element method (FEM) are in good agreement with the experimental ones. Besides, there are competitive relations between ductile fracture and brittle fracture during the process of fracture in this paper.

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Metadata
Title
Analysis of Deformation Damage and Fracture of 7050 Aluminum Alloy During Double Shear Based on Experiment and Simulation
Authors
Han Chen
Fuguo Li
Jun Cao
Jinghui Li
Qianru Wang
Weina Li
Publication date
13-02-2017
Publisher
Springer US
Published in
Journal of Materials Engineering and Performance / Issue 3/2017
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-017-2545-6

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