Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Material constitutive models."”.
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Determination of material constitutive models using orthogonal machining tests
… is to fine-tune and improve Johnson-Cook (JC) constitutive model parameters for American Iron and Steel Institute (AISI) 1045 carbon steel and Oxygen-free high conductivity (OFHC) copper using orthogonal machining tests. This dissertation is divided into two parts. Part one is concerned with …
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Analytical behaviour of FRP strengthened reinforced concrete beams under low velocity impact load incorporating rate dependant material constitutive models
… many of the Finite Element (FE) analysis models developed in these studies yielded results that were inconsistent with the test data. Key shortcomings of these models relate to a lack of definition of the FRP-concrete bond interface and considering rate dependent material behaviour.
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Identification of potential clinical indicators of carotid plaque disruption using patient specific finite element modelling
… 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 plaque disruption …
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Laboratory and Numerical Investigation for the Mobility of Ground Vehicles on Soft Clay
… will be utilized to calibrate and validate the material constitutive models necessary for developing a predictive numerical model for vehicle mobility. In parallel, in a second project, a physics-based numerical model is developed to simulate the performance of fiberglass mats over soft soils …
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Characterization of Soft Clay and Clay-tire Interaction for the Prediction of Ground Mobility
… sectors. However, the mobility in deformable material is extremely challenging, especially in the presence of water. Although there is a significant amount of research on terrains such as sands, there is a lack of research on fine-grained soils. This research is part of a bigger project that …
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Implicit coupled constitutive relations and an energy-based method for material modelling
… are an implicit modelling method for the coupled constitutive relations and an energy-based method for material modelling. The two developed methods utilise implicit models to represent material constitutive relations without the requirement of physical parameters. The first method is developed to …
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Computational biomechanics of acute myocardial infarction and its treatment
The intramyocardial injection of biomaterials is an emerging therapy for myocardial infarction. Computational methods can help to study the mechanical effect s of biomaterial injectates on the infarcted heart s and can contribute to advance and optimise the concept of this therapy. The distribution …
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Development of Models for Mixtures of Fluids and Granular Sediments
… scaling; however, it requires the development of material constitutive models and simulation techniques that are capable of capturing the breadth of phenomena exhibited by submerged granular sediments under different loading conditions. When compacted, the friction between grains manifests as a …
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Prediction of Time-Dependent Stresses and Deflections in Prestressed, Concrete Girders: From Start of Fabrication to End of Service Life
… and numerous fabrication conditions. The current models used to predict the deflection history are largely empirical and, although they account approximately for some of the important effects, they do not explicitly consider the interactions among these factors. The goal of this research was to …