Evolution of the Coefficient of Dynamic Viscosity with Growing Damage in Metals

Zill-e Hasnain Minhas; Sun Qin

doi:10.4028/www.scientific.net/AMM.313-314.72

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 313-314Evolution of the Coefficient of Dynamic Viscosity...

Evolution of the Coefficient of Dynamic Viscosity with Growing Damage in Metals

Abstract:

Coefficient of dynamic viscosity (η) for uniaxial rectangular bar of steel is calculated using creep simulation in Ansys. Norton Secondary creep law with coefficients at 600 ᵒC is used. Steel bar is then inflicted with some damage elements in order to investigate the evolution of dynamic viscosity for varying degree of fatigued specimen at constant rate and temperature. Isotropic damage parameter (D) based on the volume fraction of damaged elements is used to formulate a linear relation between the coefficient of viscosity and D. It is found that with 0.001 increase is damage parameter (D), almost 0.6% decrease on the value of Coefficient of dynamic viscosity (η) is observed.

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Periodical:

Applied Mechanics and Materials (Volumes 313-314)

Pages:

72-76

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.313-314.72

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Online since:

March 2013

Authors:

Zill-e Hasnain Minhas, Sun Qin

Keywords:

ANSYS, Coefficient of Dynamic Viscosity, Creep, Strain

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