Experimental validation of the constitutive equations of thermoelastoplasticity including the third invariant of the stress deviator |
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Authors: | N N Tormakhov |
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Institution: | 1.S. P. Timoshenko Institute of Mechanics,National Academy of Sciences of Ukraine,Kyiv,Ukraine |
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Abstract: | The equations describing thermoelastoplastic deformation along nonstraight paths and taking into account the third invariant
of the stress deviator are experimentally validated. The equations contain two scalar functions that are specified in base
tests on tubular specimens. The test data are tabulated. The values of the scalar functions for strains, temperature, and
stress mode are found by using nonlinear interpolation of the data and the temperature similarity of the functions. The stresses
in elements of the body are calculated from given strains by the method of successive approximations |
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