Computation and Comparison of Dynamic Viscosity Based on Quasi-Static and Dynamic FEM Analysis for AL7050-T7451

Zill-e Hasnain Minhas; Sun Qin

doi:10.4028/www.scientific.net/AMM.313-314.1046

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 313-314Computation and Comparison of Dynamic Viscosity...

Computation and Comparison of Dynamic Viscosity Based on Quasi-Static and Dynamic FEM Analysis for AL7050-T7451

Abstract:

Coefficients of dynamic viscosity for AL7050-T7451 at room temperature is extracted by creep and stress relaxation simulations in Ansys. An analogy has been established for both creep and stress relaxation, with simple Maxwell Model. The stress relaxation curve thus obtained is then used to generate the Prony series coefficients which are then used to run some dynamic analysis in Ansys to see the effect of loading at different frequencies on the value of η (i.e dynamic viscosity). This will be verified with the simple analytical dynamic formulation based on the Maxwell Model. A good agreement has been found for both quasi-static and dynamic tests with Maxwell model.

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Periodical:

Applied Mechanics and Materials (Volumes 313-314)

Pages:

1046-1050

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.313-314.1046

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Online since:

March 2013

Authors:

Zill-e Hasnain Minhas, Sun Qin

Keywords:

Coefficient of Dynamic Viscosity, Creep, Loss Modulus, Prony Series, Stress Relaxation

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