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Strong embedded discontinuities for simulating fracture in quasi-brittle materials
(Fracture Mechanics of Concrete StructuresFracture Mechanics of Concrete Structures, 2001)
In this paper embedded strong discontinuities are used to model discrete cracking in materials like concrete. In the approach followed a discontinuous displacement field is considered and the deformation is localized at a ...
Time scale in concrete fracture: a model based on partitions of unity
(Proceedings of the 4th International Conference on Fracture Mechanics of Concrete Structures (FRAMCOS4)Proceedings of the 4th International Conference on Fracture Mechanics of Concrete Structures (FRAMCOS4), 2001)
Intense research efforts have been put in the formulation of theories for crack initiation and propagation in concrete. Yet, little attention has been paid to the time-dependence of fracture, despite evidence of its ...
A p-adaptive scheme for overcoming volumetric locking during isochoric plastic deformation
(Solids, Structures and Coupled Problems in Engineering : ECCM-2001: 2nd European Conference on Computational MechanicsSolids, Structures and Coupled Problems in Engineering : ECCM-2001: 2nd European Conference on Computational Mechanics, 2001)
A p-adaptive scheme is developed in order to overcome volumetric locking in low order finite elements. A special adaptive scheme is used which is based on the partition of unity concept. This allows higher order polynomial ...
Multi-level analysis of localisation problems
(2001)
Localisation processes, such as shear banding and necking, have been investigated following a macroscopic and a microscopic approach. Both approaches have been formulated within a finite deformation plasticity framework. ...
Computational modelling of cracks in viscoplastic media
(Proceedings of the 10th International Conference on FractureProceedings of the 10th International Conference on Fracture, 2001)
A newly developed numerical model is used to simulate propagating cracks in a strain softening viscoplastic medium. The model allows the simulation of displacement discontinuities independently of a finite element mesh. ...
Discontinuous modelling of strain localisation and failure
(Delft University of Technology, 2001-06-12)
The computational simulation of failure in solids poses many challenges. A proper understanding of how structures respond under loading, both before and past the peak load, is important for safe and economical constructions. ...
Analysis of delamination growth with discontinuous finite elements
(Solids, Structures and Coupled Problems in EngineeringSolids, Structures and Coupled Problems in Engineering, 2001)
In this contribution a new finite element is presented for the simulation of delamination growth in thin layered composite materials. The element is based on the solid-like shell element, a volume element that can be used ...
An interface element based on the partition of unity
(Delft University of Technology, 2001)
An alternative interface finite element is developed. By using the partition of unity property of finite element shape functions, discontinuous shape functions are added to the standard finite element basis. The interface ...
Fibre-reinforced polymers in reinforced and prestressed concrete applications: moving forward
(John Wiley & Sons, Ltd.Progress in Structural Engineering and Materials, 2001)
Recent developments in the use of fibre-reinforced polymers (FRPs) in reinforced and prestressed concrete applications are reviewed. The influence of FRP material properties on the design of concrete structures is considered ...
Signal separation of musical instruments: simulation-based methods for musical signal decomposition and transcription
(University of CambridgeDepartment of EngineeringPembroke College, 2001-05-29)
This thesis presents techniques for the modelling of musical signals, with particular regard to monophonic and polyphonic pitch estimation. Musical signals are modelled as a set of notes, each comprising of a set of ...