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Modeling and analysis of the transient response of viscoelastic solids
Faculty
Engineering
Year:
2021
Type of Publication:
ZU Hosted
Pages:
Authors:
Ahmed Mohamed Gad Ali Elshafay
Staff Zu Site
Abstract In Staff Site
Journal:
WAVES IN RANDOM AND COMPLEX MEDIA Taylor and Francis
Volume:
Keywords :
Modeling , analysis , , transient response of viscoelastic solids
Abstract:
In this paper, an incremental finite element model (IFEM) for the transient analysis of viscoelastic solids is developed. The viscoelastic constitutive response is modeled based on the hereditary integral. Two new incremental constitutive forms suitable for finite element implementation are derived; creep-based (CB) and relaxation-based (RB) and, as a consequent, the difficulties associated with the interconversion from the relaxation modulus to the creep compliance and vice versa are avoided. Creep compliance and relaxation modulus are, respectively, modeled using generalized Kelvin–Voigt model and generalized Wiechert’s model. To check the validity, the computational procedure, semi-analytical solution is derived for simple viscoelastic cases using Laplace and inverse Laplace transform techniques. The obtained results from the computational procedure are compared with that obtained from the derived semi-analytical solution. To show the validity and applicability of the developed model, two different applications under different excitation patterns are presented. In each application, the time response for displacements and stresses, especially for the dynamic stress concentration factor for both elastic and viscoelastic analyses are investigated. Moreover, the dissipative recoverable nature of the viscoelastic solids under different loading-unloading excitation patterns is illustrated.
Author Related Publications
Ahmed Mohamed Gad Ali Elshafay, "A random microstructure-based model to study the effect of the shape of reinforcement particles on the damage of elastoplastic particulate metal matrix composites", Department of Mechanical Design and Production Engineering, Faculty of Engineering, Zagazig University, 2021
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Ahmed Mohamed Gad Ali Elshafay, "Predictive Computational Model for Damage Behavior of Metal-Matrix Composites Emphasizing the Effect of Particle Size and Volume Fraction", Department of Mechanical Design and Production Engineering, Faculty of Engineering, Zagazig University, Zagazig, 2021
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Ahmed Mohamed Gad Ali Elshafay, "Influence of surface energy on the nanoindentation response of elastically-layered viscoelastic materials", Springer, 2015
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Ahmed Mohamed Gad Ali Elshafay, "Tribological Characterization of Hybrid Metal Matrix Composites Processed by Powder Metallurgy", springer, 2017
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Ahmed Mohamed Gad Ali Elshafay, "An iterative residual-based procedure for solving coupled elastoplastic damage problems", Department of Mechanical Design and Production Engineering, Faculty of Engineering, Zagazig University, 2021
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Department Related Publications
Soliman Soliman Soliman Alieldien, "A first-order shear deformation finite element model for elastostatic analysis of laminated composite plates and the equivalent functionally graded plates", Ain Shams Engineering Journal, 2011
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Soliman Soliman Soliman Alieldien, "Size-dependent analysis of functionally graded ultra-thin films", Structural Engineering and Mechanics, Vol. 44, No. 4 (2012) 431-448, 2012
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Soliman Soliman Soliman Alieldien, "Bending Analysis of Ultra-thin Functionally Graded Mindlin Plates Incorporating Surface Energy Effects", International Journal of Mechanical Sciences, 2013
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Soliman Soliman Soliman Alieldien, "Finite element analysis of functionally graded nano-scale films", Finite Elements in Analysis and Design, 2013
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Soliman Soliman Soliman Alieldien, "Finite Element Analysis of the Deformation of Functionally Graded Plates under Thermomechanical Loads", Mathematical Problems in Engineering, 2013
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