Finite Strain with large rotations: A new hybrid numerical/experimental approach. Deformation up to large strains and rotations is important in rocks, metals, polymers, and biomaterials. Computational mechanics is a standard tool for modelling such deformations. However, in earth sciences, mechanical theories use small-strain formulations or large-strain approaches with classical stress rates. Classical stress rates can lead to incorrect stored energies. This project proposes to test a new large ....Finite Strain with large rotations: A new hybrid numerical/experimental approach. Deformation up to large strains and rotations is important in rocks, metals, polymers, and biomaterials. Computational mechanics is a standard tool for modelling such deformations. However, in earth sciences, mechanical theories use small-strain formulations or large-strain approaches with classical stress rates. Classical stress rates can lead to incorrect stored energies. This project proposes to test a new large-strain theory tailored to rocks experimentally, and to apply it to a pivotal geological problem: shear zone formation. The project will advance our fundamental understanding of the mechanics and energetics of rock deformation and provide a novel tool for the modelling of large deformations.Read moreRead less
Industrial Transformation Training Centres - Grant ID: IC170100006
Funder
Australian Research Council
Funding Amount
$3,937,625.00
Summary
ARC Training Centre for Advanced Technologies in Rail Track Infrastructure. The ARC Training Centre for Advanced Technologies in Rail Track Infrastructure aims to transform Australia’s rail construction and maintenance technologies through specialist training of industry-focused researchers. Generation of new knowledge and close collaboration with companies within the rail supply chain will result in enhanced rail capacity and supply chain efficiency across the rail network. This will include in ....ARC Training Centre for Advanced Technologies in Rail Track Infrastructure. The ARC Training Centre for Advanced Technologies in Rail Track Infrastructure aims to transform Australia’s rail construction and maintenance technologies through specialist training of industry-focused researchers. Generation of new knowledge and close collaboration with companies within the rail supply chain will result in enhanced rail capacity and supply chain efficiency across the rail network. This will include increased axle loads and higher speeds, greater safety margins, reduced construction and maintenance costs, and a body of competent railway professionals in the nation’s work force.Read moreRead less
Catastrophic Rock and Concrete Brittle Failures. Brittle rocks and concrete under extreme stresses fracture spontaneously and without pre-warning. In deep mining and tunnelling this causes fatalities, injuries and serious damage. Based on recent advances by the CIs in understanding the effect of biaxial loading and the free surface on catastrophic fracture propagation, the project aims to develop a new paradigm of monitoring, prediction and prevention of dangerous skin rock burst-type failures. ....Catastrophic Rock and Concrete Brittle Failures. Brittle rocks and concrete under extreme stresses fracture spontaneously and without pre-warning. In deep mining and tunnelling this causes fatalities, injuries and serious damage. Based on recent advances by the CIs in understanding the effect of biaxial loading and the free surface on catastrophic fracture propagation, the project aims to develop a new paradigm of monitoring, prediction and prevention of dangerous skin rock burst-type failures. A unique experimental methodology, measurements and analytical and numerical models will be employed to provide a better understanding of the fundamental processes in rock fracturing. This will lead to safer and more cost-effective deep rock engineering designs.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE150100428
Funder
Australian Research Council
Funding Amount
$360,000.00
Summary
Effect of natural seabed on hydrodynamics around cylindrical structures. This project aims to investigate the flow around a circular cylinder, placed near a plane boundary, as a fundamental fluid phenomenon and for applications of designing subsea pipelines. The proposed work will be carried out using a combined approach of physical model testing and numerical study. The effect of the plane boundary on flow transition from 2D to 3D, from sub-critical to critical turbulence regime will be examine ....Effect of natural seabed on hydrodynamics around cylindrical structures. This project aims to investigate the flow around a circular cylinder, placed near a plane boundary, as a fundamental fluid phenomenon and for applications of designing subsea pipelines. The proposed work will be carried out using a combined approach of physical model testing and numerical study. The effect of the plane boundary on flow transition from 2D to 3D, from sub-critical to critical turbulence regime will be examined. The project aims to derive a comprehensive set of force coefficients to predict hydrodynamic forces on pipelines that will improve the design of subsea pipelines. This project could provide significant benefits for the Australian subsea oil and gas industry.Read moreRead less
Development of hot-mix asphalt layer thickness design for longer-life asphalt pavements. This project will bring about an advance in pavement analysis and design, based on a more realistic approach to design inputs, analysis and design. The contribution of the project outcomes to knowledge in the field will be extremely important and a move away from empiricism will benefit pavement building industries world-wide.
Vortex and force characteristics of inclined offshore cylindrical structures in oscillatory flows. Understanding the effects of the inclination angle of an offshore cylindrical structure on hydrodynamic loads in waves is vitally important for safety and longevity of these structures. The project outcomes will be invaluable in minimising the chances of structural failure and enhancing Australia's capabilities in hydrodynamic research.
Local scour below offshore pipelines on calcareous sediments. This project will improve predictions of erosion around subsea structures in calcareous sediment, allowing potential pipeline self-burial. This will reduce the considerable costs currently spent on pipeline stabilisation and increase the viability of Australia's offshore resources and the competitiveness of the Australian oil and gas industry.
Predicting scour and scour-induced settlement of subsea infrastructure. This project aims to develop improved predictions and understanding of the potential and extent of scour and scour-induced settlement of subsea infrastructure on mobile seabeds. This is expected to enable scour and settlement to be accounted for directly in engineering stability and serviceability design, overturning current practice which ignores both effects on the basis of using scour protection and costly maintenance and ....Predicting scour and scour-induced settlement of subsea infrastructure. This project aims to develop improved predictions and understanding of the potential and extent of scour and scour-induced settlement of subsea infrastructure on mobile seabeds. This is expected to enable scour and settlement to be accounted for directly in engineering stability and serviceability design, overturning current practice which ignores both effects on the basis of using scour protection and costly maintenance and remediation. Development of accurate predictions is expected to be achieved through physical model testing, numerical modelling and analysis of field data. Predictions should improve subsea reliability and lead to omission of scour protection in some situations, increasing international competitiveness of our offshore oil and gas industry.Read moreRead less
Hydrodynamic forces on small diameter pipelines laid on natural seabed. This project aims to improve predictions of hydrodynamic forces on small submarine cables and pipelines through comprehensive experimental modelling at 1:1 scale coupled with development of predictive numerical models. The focus will be on forces in unsteady flows. Present industry guidelines do not make allowance for potential reductions in forces for small diameter pipelines whose diameters are a similar length to the effe ....Hydrodynamic forces on small diameter pipelines laid on natural seabed. This project aims to improve predictions of hydrodynamic forces on small submarine cables and pipelines through comprehensive experimental modelling at 1:1 scale coupled with development of predictive numerical models. The focus will be on forces in unsteady flows. Present industry guidelines do not make allowance for potential reductions in forces for small diameter pipelines whose diameters are a similar length to the effective seabed boundary layer, thereby leading to overly conservative and costly stability design. Results from the experimental program and numerical model developed are expected to be used to improve the current industry design guidelines.Read moreRead less
Laser Ultrasonic Health Monitoring for Australia’s Infrastructure Assets. This project aims to develop technologies to monitor the health of Australia’s ageing infrastructure with the use of a unique laser ultrasonic device. The laser device will be used to conduct experiments that are expected to develop a set of techniques for monitoring the critical areas of structures with most frequently observed ageing problems. Precise estimates of damage will be made by processing signals from a combinat ....Laser Ultrasonic Health Monitoring for Australia’s Infrastructure Assets. This project aims to develop technologies to monitor the health of Australia’s ageing infrastructure with the use of a unique laser ultrasonic device. The laser device will be used to conduct experiments that are expected to develop a set of techniques for monitoring the critical areas of structures with most frequently observed ageing problems. Precise estimates of damage will be made by processing signals from a combination of simulation and experimental modelling. Feedback from the user community is expected to further improve the techniques.Read moreRead less