Modeling Failure of Bitumen Films in Tension
Publication: Journal of Engineering Mechanics
Volume 138, Issue 11
Abstract
Finite-element analysis is used to model the failure of thin-film butt-joint specimens of pure bitumen in tension for a wide range of test conditions (temperature and strain rate). The approach uses a powerful numerical scheme based on two components: a nonlinear viscous, temperature- and rate-dependent constitutive material model that describes the mechanical deformation behavior of bitumen, implemented into a special-purpose finite-element user material subroutine, and a cohesive zone model for simulating the fracture process. The finite-element model is validated by comparing computed fracture characterization parameters with experimental results. The predicted force versus displacement characteristics and the normalized toughness, , are found to compare favorably with experimental results in the ductile and brittle regimes, with the failure mode being accurately simulated.
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Acknowledgments
The authors are grateful for the support provided by the Nottingham Asphalt Research Consortium (NARC) through the studentship program. Partial funding was also provided by St. Catharine’s College, Cambridge University, and CONACYT-SEP, Mexico.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 138 • Issue 11 • November 2012
Pages: 1357 - 1371
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Jan 1, 2011
Accepted: Feb 15, 2012
Published online: Feb 18, 2012
Published in print: Nov 1, 2012
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