Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Abstract: Fatigue cracking is a main form of structural damage of asphalt pavements. In general, there are four approaches to characterize the fatigue behavior of asphalt concrete. The methods including Phenomenological Approach, damage–energy fatigue approach, fatigue fracture mechanics and fatigue damage mechanics. Based on continuum damage mechanics, fatigue cycles of structural members in test can be greatly reduced and a unified approach of predicting fatigue crack initiation and fatigue crack propagation can be constructed. Generally, one damage variable is defined to account for the relative decrease of Young’s modulus with loading and, therefore, the change of Poisson ratio can not be considered. To accurately describe the coupling relationship between damage and stress fields, a bi-variable damage model to describe the variations of shear modulus and bulk modulus is the direction of future research.
Abstract: Fatigue cracking is a main form of structural damage of asphalt pavements. In general, there are four approaches to characterize the fatigue behavior of asphalt concrete. The methods including Phenomenological Approach, damage–energy fatigue approach, fatigue fracture mechanics and fatigue damage mechanics. Based on continuum damage mechanics, fatigue cycles of structural members in test can be greatly reduced and a unified approach of predicting fatigue crack initiation and fatigue crack propagation can be constructed. Generally, one damage variable is defined to account for the relative decrease of Young’s modulus with loading and, therefore, the change of Poisson ratio can not be considered. To accurately describe the coupling relationship between damage and stress fields, a bi-variable damage model to describe the variations of shear modulus and bulk modulus is the direction of future research.
Research on the Fatigue Damage of the Asphalt Pavement
Applied Mechanics and Materials ; 256-259 ; 1776-1779
13.12.2012
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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