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Thermal stresses of flexible pavement with consideration of temperature-dependent material characteristics using stiffness matrix method

Thermal stresses of flexible pavement with consideration of temperature-dependent material... The asphalt pavement is regarded as a multilayered elastic half space axisymmetrical body. By introducing the relationship between material characteristics and temperature into the fundamental equations of thermoelasticity and using mathematic methods of Laplace and Hankel integral transformation, the stiffness matrix for a layer is derived firstly. Then the global stiffness matrix is established for multilayered elastic half space using the finite element concepts in which layers are completely contacted. Therefore, explicit solution for thermal stresses of the asphalt pavement is obtained from the solution of the algebra equation formed by global stiffness matrix and the inverse Hankel and Laplace integral transformation. Because the elements of matrix do not include positive exponential function, the calculation is not overflowed and the shortages of transfer matrix method are overcome. This approach serves as a better model for real pavement structure as it takes into account the relationships between the material characteristics and temperature in the pavement system. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mechanics of Time-Dependent Materials Springer Journals

Thermal stresses of flexible pavement with consideration of temperature-dependent material characteristics using stiffness matrix method

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References (7)

Publisher
Springer Journals
Copyright
Copyright © 2011 by Springer Science+Business Media, B. V.
Subject
Engineering; Polymer Sciences ; Characterization and Evaluation of Materials; Mechanics; Continuum Mechanics and Mechanics of Materials
ISSN
1385-2000
eISSN
1573-2738
DOI
10.1007/s11043-010-9125-6
Publisher site
See Article on Publisher Site

Abstract

The asphalt pavement is regarded as a multilayered elastic half space axisymmetrical body. By introducing the relationship between material characteristics and temperature into the fundamental equations of thermoelasticity and using mathematic methods of Laplace and Hankel integral transformation, the stiffness matrix for a layer is derived firstly. Then the global stiffness matrix is established for multilayered elastic half space using the finite element concepts in which layers are completely contacted. Therefore, explicit solution for thermal stresses of the asphalt pavement is obtained from the solution of the algebra equation formed by global stiffness matrix and the inverse Hankel and Laplace integral transformation. Because the elements of matrix do not include positive exponential function, the calculation is not overflowed and the shortages of transfer matrix method are overcome. This approach serves as a better model for real pavement structure as it takes into account the relationships between the material characteristics and temperature in the pavement system.

Journal

Mechanics of Time-Dependent Materials – Springer Journals

Published: Feb 1, 2011

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