Research on Constitutive Relation of Metals under High Strain Rate

Abstract:

The deformation behavior of materials under high strain rate environment is often accompanied by complex physical conditions such as high temperature, high pressure and shock waves. In order to describe the deformation behavior of materials accurately, the external extreme conditions and internal micro-deformation mechanisms of the material must be considered fully. The constitutive relationship of materials is related to the relationship between stress and strain, strain rate, temperature, deformation history, etc. Different constitutive models are based on different conditions and assumptions. This paper summarizes the microscopic deformation mechanisms, constitutive models and physical test methods of the deformation behavior of metals under high strain rate. These three aspects are interrelated and inseparable to explain the deformation behavior of metals under high strain rate.

• Periodical: Key Engineering Materials (Volume 777)
• Pages: 386-392
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.777.386
• Online since: August 2018
• Authors: Jian Guo, Lian Fa Yang*, Jian Ping Ma
• Keywords: Constitutive Model, Hopkinson Pressure Bar, Micro-Deformation Mechanism, Strain Rate

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