Publication Date:
2013-08-31
Description:
A unified numerical method for the integration of stiff time dependent constitutive equations is presented. The solution process is directly applied to a constitutive model proposed by Bodner. The theory confronts time dependent inelastic behavior coupled with both isotropic hardening and directional hardening behaviors. Predicted stress-strain responses from this model are compared to experimental data from cyclic tests on uniaxial specimens. An algorithm is developed for the efficient integration of the Bodner flow equation. A comparison is made with the Euler integration method. An analysis of computational time is presented for the three algorithms.
Keywords:
STRUCTURAL MECHANICS
Type:
NASA. Lewis Research Center, Nonlinear Constitutive Relations for High Temperature Applications, 1986; p 353-357
Format:
application/pdf
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