Constitutive Relationship of 3A21 Aluminium Alloy Tube for Magnetic Pulse Forming

Abstract:

In this work, Split Hopkinson Pressure Bar (SHPB) was employed to test the material properties dynamic forming. The stress-strain curves and dynamic yield strengths under variable strain rates were obtained. Constitutive equation of 3A21 aluminium alloy was formulated by Johnson-Cook model and then, it was applied to simulate the forming behavior of 3A21 aluminum alloy tube under dynamic state by software Ansys/ls-dyna. The results show that, for magnetic pulse forming process, the simulating results well corresponded with those of experiments that demonstrate the constitutive equation established present good accuracy.

• Periodical: Applied Mechanics and Materials (Volumes 239-240)
• Pages: 314-319
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.239-240.314
• Online since: December 2012
• Authors: Zhi Dan Xu, Jun Jia Cui, Hai Ping Yu, Chun Feng Li
• Keywords: 3A21 Aluminium Alloy, Constitutive Relationship, Magnetic Pulse Forming

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