Modeling and simulation of the decohesion of particulate aggregates in a binding matrix

authored by: T. I. Zohdi, Peter Wriggers
Abstract: A model for the decohesion of aggregates of suspended particulate material in a binding matrix is developed. In the model cohesive zones which envelop each particle individually are introduced at the particulate/binder interface. During progressive loading, the deterioration of the cohesive zones is initiated if constraints placed on the microstress fields are violated. In order for the material behavior to be energetically admissible, the deterioration of the material at a point is in the form of a reduction of the elasticity tensor's eigenvalues at that point. The material within the cohesive zones deteriorates until the constraints are met. In order to isolate and study the effects of interfacial deterioration, outside of the cohesive zones, the material is unaltered. Mathematical properties of the model, as well as physical restrictions, are discussed. Numerical simulations are performed employing the finite element method to illustrate the approach in three-dimensional applications.
Organisation(s): Institute of Mechanics and Computational Mechanics
Type: Article
Journal: Engineering Computations (Swansea, Wales)
Volume: 18
Pages: 79-95
No. of pages: 17
ISSN: 0264-4401
Publication date: 01.02.2001
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Software, General Engineering, Computer Science Applications, Computational Theory and Mathematics
Electronic version(s): https://doi.org/10.1108/02644400110365824 (Access: Unknown)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{839dc27ff3e04b2598913d3aece4fb71,
title = "Modeling and simulation of the decohesion of particulate aggregates in a binding matrix",
abstract = "A model for the decohesion of aggregates of suspended particulate material in a binding matrix is developed. In the model cohesive zones which envelop each particle individually are introduced at the particulate/binder interface. During progressive loading, the deterioration of the cohesive zones is initiated if constraints placed on the microstress fields are violated. In order for the material behavior to be energetically admissible, the deterioration of the material at a point is in the form of a reduction of the elasticity tensor's eigenvalues at that point. The material within the cohesive zones deteriorates until the constraints are met. In order to isolate and study the effects of interfacial deterioration, outside of the cohesive zones, the material is unaltered. Mathematical properties of the model, as well as physical restrictions, are discussed. Numerical simulations are performed employing the finite element method to illustrate the approach in three-dimensional applications.",
keywords = "Aggregates, Cohesion",
author = "Zohdi, {T. I.} and Peter Wriggers",
year = "2001",
month = feb,
day = "1",
doi = "10.1108/02644400110365824",
language = "English",
volume = "18",
pages = "79--95",
journal = "Engineering Computations (Swansea, Wales)",
issn = "0264-4401",
publisher = "Emerald Group Publishing Ltd.",
number = "1-2",
}