Finite Element Analysis for Comprehensive Residual Stress of 7075 Aluminum Alloy Thick Plate

Abstract:

Based on “physical field coupling” finite element method, the generation of residual stress and interactive coupling effect were analyzed during the forming process of aluminum alloy thick-plate. Therefore, comprehensive residual stress generated from rolling, quenching and stretching was obtained. The finite element model was proved effective by comparing the results of simulation and experiment. Results show that percent reduction has significant influence to the distribution and magnitude of rolling stress; There is a coupling effect between rolling stress and quenching stress, which represents a basic state; Furthermore, after stretching the distribution of coupling stress remains, but the value reduces greatly; The residual stress has got the minimum, when stretching is near 3%.

• Periodical: Advanced Materials Research (Volumes 154-155)
• Pages: 1255-1261
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.154-155.1255
• Online since: October 2010
• Authors: Hai Yan Li, Yi Du Zhang, Hong Wei Zhang
• Keywords: 7075 Al Alloy Thick-Plate, Numerical Simulation, Physical Field Coupling, Residual Stress

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