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Modellierung des thermo-mechanischen Verbundverhaltens von Asphalt in Straßenaufbauten

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TLDR
In der vorliegenden Arbeit wird ein Verbundmodell zur Beschreibung des thermo-mechanischen Verhaltens von Asphaltmischungen entwickelt and validiert as discussed by the authors.
Abstract
In der vorliegenden Arbeit wird ein Verbundmodell zur Beschreibung des thermo-mechanischen Verhaltens von Asphaltmischungen entwickelt und validiert. Das Modell beschreibt das Materialverhalten von Asphalt als Verbundwerkstoff auf Basis der Mischungstheorie. Hierfur ist das Verformungsverhalten der Bindemittelkomponente mit einem fraktionalen rheologischen Modell beschrieben. Die Mineralstoffkomponente wird mit einem Modell der Hypoplastizitat erfasst. Mit Hilfe einer Evolutionsstrategie erfolgt die Identifikation der Modellparameter der Einzelkomponenten auf der Grundlage experimenteller Untersuchungen. Fur die Validierung des Verbundmodells liegt ein umfangreiches experimentelles Programm vor, bei dem zwei ausgewahlte Asphaltmischungen in einaxialen Versuchen untersucht werden. Der Vergleich der Versuche mit Ergebnissen numerischer Simulationen bedingt physikalisch begrundete Modifikationen am Verbundmodell. Das modifizierte Modell ermoglicht die Analyse des Verformungsverhaltens realer Strukturen aus Asphaltmaterialien in numerischen Berechnungen mit der Finite-Element-Methode.

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Citations
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Journal ArticleDOI

Elasticity and Anelasticity of Metals

W. Hume-Rothery
- 01 Jul 1949 - 
TL;DR: In this article, Zener uses the term "anelasticity" to describe the properties of solids, as a result of which stress and strain are not uniquely related.
Journal Article

Introduction of hypoplasticity

TL;DR: The paper presents the hypoplastic model that is capable of capturing the salient features of granular materials for problems involving extremely low stress levels or extremely high stress.
Journal ArticleDOI

Thermo-mechanical finite element prediction of the structural long-term response of asphalt pavements subjected to periodic traffic load: Tire-pavement interaction and rutting

TL;DR: In this paper, the structural long-term response of asphalt pavements (modeled as elastoplastic solid at large strains) under periodic traffic load is investigated within the finite element method (FEM).
DissertationDOI

Stability of Municipal Solid Waste Landfills

Volker Krase
TL;DR: In this article, a generalised DARCY model for multiphase transport of municipal solid waste is proposed to describe the motion of the pore fluids, and structural analyses using the finite element method identify risks concerning the stability of landfill structures.
Journal ArticleDOI

A continuum mechanical model for asphalt based on the particle size distribution: Numerical formulation for large deformations and experimental validation

TL;DR: In this paper, a physically motivated continuum mechanical model for asphalt concrete and stone mastic asphalt (asphalt material) at large deformations is proposed, which consists of a short-term and a long-term part connected in series governing the description of the shortterm and the longterm behavior of the asphalt material, respectively.
References
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Modeling of combined physical-mechanical moisture induced damage in asphaltic mixes

Niki Kringos
TL;DR: In this article, the authors developed a computational tool for the fundamental analysis of combined mechanical and moisture induced damage of asphaltic mixes which includes both physical and mechanical moisture damage inducing processes.
Journal ArticleDOI

Effects of voids and volume changes on the behaviour of frictional materials

TL;DR: In this paper, a review of some of the basic differences in the experimentally observed behaviour of metals and frictional materials is presented, including the absence or presence of voids and the tendency to change or maintain constant volume during compression and shear.
Journal ArticleDOI

A nonlinear hyperelastic mixture theory model for anisotropy, transport, and swelling of annulus fibrosus.

TL;DR: A nonlinear hyperelastic fiber-reinforced continuum mixture theory model is developed that is able to describe the anisotropic finite and infinitesimal deformation, tension–compression nonlinearity, osmotic swelling, pressurization, electrical potential and current, and water and ion transports within the annulus.

Geometrische Locking-Effekte bei Finiten Elementen und ein allgemeines Konzept zu ihrer Vermeidung

TL;DR: In this article, a systematische analysis of the locking-Effekte bei Finiten Elementen and the methoden zu ihrer vermeidung is presented.
Journal ArticleDOI

Microscale characterization of bitumen – back-analysis of viscoelastic properties by means of nanoindentation

TL;DR: In this article, a back-analysis scheme, employing the holding phase of the nanoindentation (NI) test, is extended towards fractional-creep models, which perfectly describe the viscoelastic behavior of bitumen.