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29 March 2019 Numerical simulation of tensile deformation and failure of aluminium alloys exposed to laser heating
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Proceedings Volume 11046, Fifth International Symposium on Laser Interaction with Matter; 110461T (2019) https://doi.org/10.1117/12.2524439
Event: Fifth International Symposium on Laser Interaction with Matter, 2018, Changsha, China
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.
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Zewen Li, Mohsan Jelani, Zhonghua Shen, Xiaowu Ni, and Jianmin Zhang "Numerical simulation of tensile deformation and failure of aluminium alloys exposed to laser heating ", Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 110461T (29 March 2019); https://doi.org/10.1117/12.2524439
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