Innovative Algorithm to Solve Axisymmetric Displacement and Stress Fields in Multilayered Pavement Systems
Publication: Journal of Transportation Engineering
Volume 137, Issue 4
Abstract
This paper presents an innovative algorithm to calculate the displacement and stress fields within a multilayered pavement system using layered elastic theory and Hankel and Laplace integral transforms. In particular, a recurrence relationship, which links the Hankel transform of displacements and stresses at any point within a multilayered pavement system with those at the surface point, , is systematically derived. The Hankel transforms of displacements and stresses at any point within a multilayered pavement system can be explicitly determined using the derived recurrence relationships, and the subsequent inverse Hankel transforms give the displacements and stresses at the point of interest. Theoretical and computational verification of the proposed algorithm justify its correctness. The proposed algorithm does not use a numerical linear system solver employed in the traditional approach to solve the axisymmetric problems in multilayered pavement systems. Because of the explicitly derived recurrence relationships for displacements and stresses, the proposed algorithm provides a more rapid solution time than the stress-function-based approach utilized in existing layered elastic theory programs.
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Acknowledgments
The work of the first writer was partially supported by the 2008 Dwight David Eisenhower Transportation Graduate Fellowship.
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Information
Published In
Journal of Transportation Engineering
Volume 137 • Issue 4 • April 2011
Pages: 287 - 295
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Feb 2, 2010
Accepted: Jul 23, 2010
Published online: Jul 26, 2010
Published in print: Apr 1, 2011
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