Thermoviscoplasticity by finite element: Tensile and compression test

Abstract The coupled thermoviscoplasticity equations are developed based on the rational theory of thermodynamics. The equations are implemented in a finite element program and applied to solving the adiabatic uniaxial tensile and compression tests of Inconel 100 at an elevated temperature (1000K). Results of the uniaxial tensile test depict a uniform temperature drop of about 2K, due to elastic dilation, followed by a temperature rise as plastic deformation takes place. Compression results show a non-uniform temperature rise throughout the loading history with a maximum at the mid-point of the compression specimen.

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