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Showing 1 to 20 of 134 for “"Finite element modelling"”.
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Finite element modelling of photonic crystal fibres
… The main objective of this research is the modelling of photonic crystal fibre to identify the fundamental and higher order quasi-TE and TM modes with square, ,rectangular and circular air holes in a square and hexagonal matrix, by using a rigorous full-vectorial H-field based finite element …
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Structure-acoustic analysis; finite element modelling and reduction methods
… structure-acoustic systems by use of finite element analysis. The systems studied here are limited to those that consist of an enclosed acoustic fluid cavity, which is coupled to a flexible structure and/or a porous sound absorbing material domain. This type of analysis is applicable …
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Finite Element Modelling of Ventilated Brake Disc Hot Spotting
… phenomenon, which is a challenge for numerical modelling in terms of both accuracy and efficiency especially for complex disc geometry. In this research, the aim was to develop a computationally efficient finite element (FE) approach for 2-piece pin-mounted ventilated disc hot spot prediction …
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Strain analysis in glenohumeral capsule through finite element modelling
… of the forward reach, a subject specific finite element model of the glenohumeral joint with the capsule was developed. Since the mechanical properties of the capsule under multiaxial loading were unknown we proposed an inverse finite elements based optimization routine to determine the …
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Measurement and finite element modelling of temperatures in welding processes
… a problem, substantial experimental and computer modelling work on residual stresses and out-of-plane distortion analysis need to be carried out. Such computer modelling requires the temperature fields or histories during welding as pre-requisite input which can be obtained either from actual …
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Experimental and finite element modelling of ultrasonic cutting of food
… and experience of the tool designers. Finite element (FE) models have also been used to predict the vibrational behaviour of the cutting tool. However, the performance of an ultrasonic device critically relies on the interaction of the cutting tool and material to be cut. Currently the …
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Geometry Reconstruction and Finite Element Modelling of Porcine Knee Joint
… indentation mapping method, and build a finite element model in ABAQUS to determine the joint mechanics. The porcine knee joint model were reconstructed using MATLAB and Rhinoceros. A knee compression was simulated with ABAQUS, which considered fluid pressure and flow in articular …
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Finite element modelling of shear connection for steel-concrete composite girders
… thesis is to develop effective 3-dimensional finite element models to trace the behaviour of headed stud shear connectors in composite girders with solid slabs and precast hollow core slabs. The finite element package ABAQUS was used to conduct the analysis. Push-off tests with both types of …
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Finite element modelling of fatigue crack growth in multi-layered architectures
… through automated meshing processes based on the Finite Element Method in the commercial code ANSYS. Two-dimensional FE analyses studied the effect of shielding and anti-shielding on crack growth in flat strip specimens subjected to three-point bending tests experiencing severe yielding and path …
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Finite element modelling the forming of components for portable electronic devices
… experimental tests.<br/><br/>A finite element model replicating the loading and geometry associated with load-controlled biaxial tests was constructed in order to validate the previous calibration of the modified material model. Comparison between the material behaviour generated …
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Finite Element Modelling and Experimental Characterisation of Auricle Mechanics for Earable Design
… physical phantoms, volunteer experiments, and finite element (FE) simulations. First, simplified and anatomically refined auricle phantoms were constructed to develop controlled experiment methods under static and dynamic loading, from which stiffness, deformation angle, and natural frequency …
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Finite element modelling of voided slab bridge decks using orthotropic plate theory
… has been the subject of extensive research. When modelling a voided slab as an orthotropic plate, it is necessary to calculate the reduction in the longitudinal and transverse stiffness due to the presence of the voids. Several equivalent plate parameters, which take on numerous forms, have been …
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Finite Element Modelling of Deep Zone Residual Stresses in Rolling Contact Bearing Elements.
Bearing elements during service are subjected to rolling contact fatigue (RCF) resulting in bearing material evolution and development of residual stresses under the contact track with progressive stress cycles. The evolved bearing material contains different microstructural features, termed as …
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Damage detection in structures using frequency response function (FRF) data and finite element modelling
… In this thesis, the former is obtained from a finite element model of the virgin structure and the latter are obtained from an impact hammer test. The Damage Detection Algorithm will be used to detect simulated damage FRF data applied to a simple mass spring system, space truss structure and a …
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Finite element modelling and image reconstruction in single and multi-frequency electrical impedance tomography.
… of this new mode of imaging, a numerical modelling method has been used in order to investigate the behaviour of an EIT system. Using this mode of analysis, it is possible to simulate many experiments that otherwise physically would be very time consuming and expensive. Such investigation …
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Thermomechanical Stress in Solar Cells and Modules: A Finite Element Modelling and Experimental Investigation
… stress in Si cells and modules by utilising finite element modelling (FEM) complemented by experimental validations. Models were developed to analyse the stress evolution in Multi-Busbar (MBB) tiled modules after soldering and lamination. The impact of cell overlapping in modules and the …
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Measurements and finite element modelling of transformer flux with dc and power frequency current
… lead to overheating due to excessive stray flux. Finite element matrix (FEM) modelling software is of considerable use in transformer engineering as it is able to solve electromagnetic fields in transformers. For many problems, typically involving only specific parts of a transformer, fairly …
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DEVELOPMENT OF NEW COLD BITUMEN EMULSION MIXTURES AND FINITE ELEMENT MODELLING OF PREDICTING PERMANENT DEFORMATION
… with fast and powerful software that includes finite element analysis. Several finite element models (FEM) have been developed to simulate the behaviour of hot mix asphalt, but none exists for cold mix asphalt reinforced by natural and synthetic fibres. This study also describes the development …
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Identification of potential clinical indicators of carotid plaque disruption using patient specific finite element modelling
… Many studies have used patient specific finite element models to estimate the stress environment in atherosclerotic plaques, attempting to correlate the magnitude of stress to plaque vulnerability. This thesis investigates the accuracy of these stress measures as clinical indicators of …
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