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Proceedings Paper

Numerical simulation of tensile deformation and failure of aluminium alloys exposed to laser heating
Author(s): Zewen Li; Mohsan Jelani; Zhonghua Shen; Xiaowu Ni; Jianmin Zhang
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Paper Abstract

A 3D mathematical model was established for the investigation of the thermomechanical behavior of aluminum alloys (Al-7075) under the combined action of tensile loading and laser irradiations. The transient temperature fields and stress-strain field was obtained by using the finite element method. The Johnson-Cook’s constitutive equation is implemented in the FE model to study the failure behaviour of alloy. The effects of various pre-loading and laser power densities on the failure time, temperature distribution and the deformation behavior of aluminum alloys are analyzed. The results indicate the significant reduction in failure time for higher laser power densities and for high preloading values, which implies that preloading may contribute a significant role in the failure of the material at elevated temperature. The numerical result agrees well with our previous experiment results, concluding that the numerical model is reasonable.

Paper Details

Date Published: 29 March 2019
PDF: 10 pages
Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 110461T (29 March 2019); doi: 10.1117/12.2524439
Show Author Affiliations
Zewen Li, Nanjing Univ. of Science and Technology (China)
Mohsan Jelani, Nanjing Univ. of Science and Technology (China)
Zhonghua Shen, Nanjing Univ. of Science and Technology (China)
Xiaowu Ni, Nanjing Univ. of Science and Technology (China)
Jianmin Zhang, Northwest Institute of Nuclear Technology (China)

Published in SPIE Proceedings Vol. 11046:
Fifth International Symposium on Laser Interaction with Matter
YiJun Zhao, Editor(s)

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