Flexible Pavement Analysis By The Three Dimentsional Finite Element Method
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Flexible Pavement Analysis By The Three Dimensional Finite Element Method
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Author : John B. Palmerton
language : en
Publisher:
Release Date : 1973
Flexible Pavement Analysis By The Three Dimensional Finite Element Method written by John B. Palmerton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with categories.
The report describes a preliminary study to evaluate the applicability of three-dimensional finite element analysis for predicting the behavior of pavement systems. Since many pavement problems are not reducible to plane behavior, this new analysis technique should provide a good basis for future analysis of complicated pavement systems. The finite element computer program used in this study is designated SOLSAP and was originally developed to investigate the three-dimensional behavior of earth and earth-rock dams. It was used in this study to investigate the effect of a static load application (similar to that produced by the C-5A aircraft) on a flexible pavement section that had been previously field-tested at the U.S. Army Engineer Waterways Experiment Station. SOLSAP considers both nonlinear stress-strain behavior and nonlinear volume characteristics. (Modified author abstract).
Flexible Pavement Analysis By The Three Dimentsional Finite Element Method
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Author : John B. Palmerton
language : en
Publisher:
Release Date : 1973
Flexible Pavement Analysis By The Three Dimentsional Finite Element Method written by John B. Palmerton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Finite element method categories.
Three Dimensional Finite Element Analysis Of Flexible Pavements
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Author : Jia Wang
language : en
Publisher:
Release Date : 2001
Three Dimensional Finite Element Analysis Of Flexible Pavements written by Jia Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Pavements, Asphalt categories.
Three Dimensional Finite Element Modeling As A Tool For Flexible Pavement Design And Analysis
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Author : Michael L. Willis
language : en
Publisher:
Release Date : 2005
Three Dimensional Finite Element Modeling As A Tool For Flexible Pavement Design And Analysis written by Michael L. Willis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Finite element method categories.
Three Dimensional Finite Element Analysis Of Flexible Pavements Considering Nonlinear Pavement Foundation Behavior
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Author :
language : en
Publisher:
Release Date : 2007
Three Dimensional Finite Element Analysis Of Flexible Pavements Considering Nonlinear Pavement Foundation Behavior written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Development Of Domain Integral And Generalized Finite Element Methods For Three Dimensional Analysis Of Near Surface Cracking In Flexible Pavements
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Author : Hasan Ozer
language : en
Publisher:
Release Date : 2011
Development Of Domain Integral And Generalized Finite Element Methods For Three Dimensional Analysis Of Near Surface Cracking In Flexible Pavements written by Hasan Ozer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Layered elastic theories and finite element method are among the most familiar and practiced mechanistic approaches. These approaches succeed to a certain extent in the analysis of classical bottom-up fatigue cracking of relatively thin flexible pavements, where tensile stresses and strains govern the behavior at the asphalt layer. However, elastic theories are incapable of predicting other pavement distresses, including near-surface cracking. Similarly, finite element method, which is equipped with fracture and continuum mechanics theories, also poses a significant challenge to the analysis of the near-surface cracking problem, where crack initiation and propagation planes are not easily predictable. Hence, the main objective of this study is to identify the effect of loading tire contact stresses on developing near-surface cracking potential. A numerical approach is chosen to analyze the problem, taking into account considering nonuniform tire-pavement contact stresses and multi-axial stress states in the proximity of tires. This study highlights the impact of novel computational methods, such as the Generalized Finite Element Method (GFEM), on the discovery and understanding of cracking mechanisms in pavements. GFEM allows for realistic modeling of complex phenomena that control fracture initiation and propagation. In this study, GFEM is adapted to analyze relatively thick flexible pavement structures to predict near-surface cracking. The three-dimensional (3-D) and highly multi-axial nature of the problem is successfully captured by this method, which is ideally designed for 3-D fracture problems for complex geometries and mixed loading conditions. This study proposes a high-order domain integral method for the computation of the crack front parameters such as energy release rate and stress intensity factors (SIFs). The method provides an approximation of the energy release rate function as a linear combination of Legendre polynomials. As a result, extracted functions are smoothly varying, which is crucial to obtain accurate crack propagation paths in 3-D for elastic or inelastic materials. Crack front directionality is captured by the proposed formulations and implementation using an energy release rate-based approach. The study also applies for the first time the domain integral techniques to pavement fracture problems utilizing the asphalt concrete viscoelastic characteristics. The GFEM, equipped with the tools developed in this study, is used as a computational platform to analyze near-surface cracking in relatively thick flexible pavement structures. Three-dimensional models of typical pavement structures are developed to analyze near-surface cracking and make predictions for potential critical locations for crack initiation and growth. Two potential scenarios become evident for crack growth in the vicinity of tires: Shear crack under compression and tensile crack. It is observed from the analysis that shear crack growth is the dominant mode of crack development due to loading in the proximity of tires, while tensile crack growth appears to develop within the pavement.
Three Dimensional Modeling Of Flexible Pavements
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Author : Ohio Research Institute for Transportation and the Environment
language : en
Publisher:
Release Date : 2002
Three Dimensional Modeling Of Flexible Pavements written by Ohio Research Institute for Transportation and the Environment and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Finite element method categories.
"A linear viscoelastic model has been incorporated into a three-dimensional finite element program for analysis of flexible pavements. Linear and quadratic versions of hexahedral elements and quadrilateral axisymmetrix elements are provided. Dynamic problems are solved by explicit, implicit, or combined explicit-implicit integration methods. Results from the program are shown to compare favorably with data from the Ohio test road"--Technical report documentation page.
Three Dimensional Finite Element Programs For Pavement Analysis Appendix 2
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Author :
language : en
Publisher:
Release Date : 1998
Three Dimensional Finite Element Programs For Pavement Analysis Appendix 2 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Finite element method categories.
Dynamic Finite Element Analysis Of A Flexible Pavement System With Geosynthetic Reinforcement
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Author : Bassam Saad
language : en
Publisher:
Release Date : 2003
Dynamic Finite Element Analysis Of A Flexible Pavement System With Geosynthetic Reinforcement written by Bassam Saad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
A Computer Code For Three Dimensional Analysis Of Asphalt Pavements
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Author :
language : pt-BR
Publisher:
Release Date : 1904
A Computer Code For Three Dimensional Analysis Of Asphalt Pavements written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1904 with categories.
Apresentam-se as implementações em um programa tridimensional não-linear pelo método dos elementos finitos de análise mecanística de pavimentos flexíveis através do método racional de dimensionamento. Os materiais geotécnicos das diversas camadas que compõem a estrutura dopavimento estão caracterizados através de módulos resilientes, dependentes do estado de tensões atuantes. A influência do carregamento gerado por rodas múltiplas nos campos de tensão e deslocamentos são investigados. Comparações são feitas entre os resultados obtidos nas análises tridimensionais, lineares e não-lineares, com aqueles determinados através de diversos programascomputacionais baseados em geral nas hipóteses de axissimetria (carregamento por roda única) e linearidade do meio elástico. Uma aplicação prática é apresentada, considerando-se o pré-dimensionamento de trecho da estrada peruana Iquitos-Nauta. Para determinação de algumaspropriedades dos materiais deste pavimento, ensaios específicos foram realizados no Laboratório de Mecânica dos Pavimentos da COPPE/UFRJ.