Steady-State Wave Propagation in Multilayered Viscoelastic Media Excited by a Moving Dynamic Distributed Load

Author:

Sun Lu1,Gu Wenjun1,Luo Feiquan2

Affiliation:

1. Transportation College, Southeast University, Nanjing 210096, China; Department of Civil Engineering, Catholic University of America, Washington, DC 20064

2. Department of Civil Engineering, Catholic University of America, Washington, DC 20064

Abstract

An analytical solution of steady-state dynamic response of a multilayered viscoelastic medium to a moving distributed load is obtained using a novel approach that combines transfer matrix method with Sun’s convolution representation integrated over impulse response function of the layered medium. The layered media under consideration include elastic and viscoelastic media with four different viscoelastic constitutive models, while the moving load is allowed to have a circular spatial distribution, which is more realistic for mimicking tire footprint than a commonly used point load. Efficient numerical algorithms based on fast evaluation of various integral transformations and their inversions are developed and validated through numerical example.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics

Reference38 articles.

1. Sun, L. , 1996, “Theoretical and Experimental Studies on Vehicle Vibration Induced Moving Stochastic Loads and Dynamic Response of Solids and Structures Under Moving Arbitrary Source,” Ph.D. thesis, Southeast University, Nanjing, China.

2. Dynamic Response of Linear Systems to Moving Stochastic Sources;Sun;J. Sound Vib.

3. Closed-Form Representation of Beam Response to Moving Line Loads;Sun;ASME J. Appl. Mech.

4. A Closed-Form Solution of Beam on Viscoelastic Subgrade Subjected to Moving Loads;Sun;Comput. Struct.

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