Modeling of shock propagation and attenuation in viscoelastic materials

R. Rusovici, G. A. Lesieutre, D. J. Inman

Research output: Contribution to journalConference article

Abstract

Protection from the potentially damaging effects of shock loading is a common design requirement for diverse mechanical structures ranging from shock accelerometers to spacecraft. High damping viscoelastic materials are employed in the design of geometrically complex, impact-absorbent components. Since shock transients are characterized by a broad frequency spectrum, it is imperative to properly model frequency spectrum, it is imperative to properly model frequency dependence of material parameters over a wide frequency range. The Anelastic Displacement Fields (ADF) method is employed to model frequency-dependence within a finite element framework. Axisysmetric, ADF finite elements are developed to address modeling of geometrically complex structures. These finite elements are then used to model shock propagation and absorption through viscoelastic structures. The model predictions are verified against longitudinal wave propagation experimental data and theory.

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Accelerometers
Wave propagation
Spacecraft
Damping

All Science Journal Classification (ASJC) codes

  • Architecture
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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title = "Modeling of shock propagation and attenuation in viscoelastic materials",
abstract = "Protection from the potentially damaging effects of shock loading is a common design requirement for diverse mechanical structures ranging from shock accelerometers to spacecraft. High damping viscoelastic materials are employed in the design of geometrically complex, impact-absorbent components. Since shock transients are characterized by a broad frequency spectrum, it is imperative to properly model frequency spectrum, it is imperative to properly model frequency dependence of material parameters over a wide frequency range. The Anelastic Displacement Fields (ADF) method is employed to model frequency-dependence within a finite element framework. Axisysmetric, ADF finite elements are developed to address modeling of geometrically complex structures. These finite elements are then used to model shock propagation and absorption through viscoelastic structures. The model predictions are verified against longitudinal wave propagation experimental data and theory.",
author = "R. Rusovici and Lesieutre, {G. A.} and Inman, {D. J.}",
year = "2000",
month = "1",
day = "1",
language = "English (US)",
volume = "1",
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journal = "Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference",
issn = "0273-4508",
publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",
number = "II",

}

Modeling of shock propagation and attenuation in viscoelastic materials. / Rusovici, R.; Lesieutre, G. A.; Inman, D. J.

In: Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Vol. 1, No. II, 01.01.2000, p. 1194-1204.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Modeling of shock propagation and attenuation in viscoelastic materials

AU - Rusovici, R.

AU - Lesieutre, G. A.

AU - Inman, D. J.

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Y1 - 2000/1/1

N2 - Protection from the potentially damaging effects of shock loading is a common design requirement for diverse mechanical structures ranging from shock accelerometers to spacecraft. High damping viscoelastic materials are employed in the design of geometrically complex, impact-absorbent components. Since shock transients are characterized by a broad frequency spectrum, it is imperative to properly model frequency spectrum, it is imperative to properly model frequency dependence of material parameters over a wide frequency range. The Anelastic Displacement Fields (ADF) method is employed to model frequency-dependence within a finite element framework. Axisysmetric, ADF finite elements are developed to address modeling of geometrically complex structures. These finite elements are then used to model shock propagation and absorption through viscoelastic structures. The model predictions are verified against longitudinal wave propagation experimental data and theory.

AB - Protection from the potentially damaging effects of shock loading is a common design requirement for diverse mechanical structures ranging from shock accelerometers to spacecraft. High damping viscoelastic materials are employed in the design of geometrically complex, impact-absorbent components. Since shock transients are characterized by a broad frequency spectrum, it is imperative to properly model frequency spectrum, it is imperative to properly model frequency dependence of material parameters over a wide frequency range. The Anelastic Displacement Fields (ADF) method is employed to model frequency-dependence within a finite element framework. Axisysmetric, ADF finite elements are developed to address modeling of geometrically complex structures. These finite elements are then used to model shock propagation and absorption through viscoelastic structures. The model predictions are verified against longitudinal wave propagation experimental data and theory.

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