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Computational methods for multi-scale structural optimisation

Structural optimisation is a powerful computational methodology for finding high-performing designs for structural components or material architectures. For example, what periodic scaffold would provide the highest possible stiffness for its weight?Solving such a problem computationally requires an understanding of the relevant equations required to model the physical properties of interest, as well as efficient implementation of a range of numerical methods including finite elements, finite differences and optimisation.With recent developments in 3D printing technologies it is now becoming possible to …

Study level
PhD, Master of Philosophy, Honours, Vacation research experience scheme
Faculty
Faculty of Science
School
School of Mathematical Sciences
Research centre(s)

Developing models of failure for porous materials

The field of fracture mechanics effectively models failure of sharp flaws (e.g., cracks). However, when modelling porous materials we'd like to develop more of an understanding of how stresses are concentrated around smooth flaws in the material (i.e., rounded pores).In this project we'll start to build such an understanding, starting from simple U shaped notches.

Study level
Honours, Vacation research experience scheme
Faculty
Faculty of Science
School
School of Mathematical Sciences
Research centre(s)

Finite element methods for modelling the deformation of polymers

The finite element method (FEM) is by now a well-established and widely accepted approach for modelling the deformation of linearly elastic materials.>In this project we will explore which FEM approach and constitutive laws may be applicable for modelling polymers, which have more deformation behaviour than a simple elastic material.Our long-term goal is to be able to accurately model the deformation of polymer bioscaffolds fabricated with the novel melt-electrowriting (MEW) additive manufacturing process.

Study level
Master of Philosophy, Honours, Vacation research experience scheme
Faculty
Faculty of Engineering
School
School of Mechanical, Medical and Process Engineering
Research centre(s)

GPU acceleration for the lattice Boltzmann method

The lattice Boltzmann method has recently gained popularity for modelling complex fluid​ dynamics including in microfluidics and bio-engineering. The method is computationally expensive, especially for 3D calculations.The aim of this project is to benchmark the open-source TCLB code for the Lattice Boltzmann method against the codes currently used here at QUT to model flow phenomena. We particularly want to leverage the GPU capabilities of the TCLB code to reduce computational time.

Study level
Honours, Vacation research experience scheme
Faculty
Faculty of Engineering
School
School of Mechanical, Medical and Process Engineering
Research centre(s)

Contact line dynamics and healing liquid films

One of the more challenging aspects of modelling fluid dynamics is the contact-line problem: how does a contact line (a junction between two different fluids and a solid) move over time? A variety of models exist, such as disjoining pressure models, Navier slip models, and the imposition of a prewetting film, to name a few.In this project we will explore the behaviour of these different contact line models in the context of closing or healing liquid films. A hole in …

Study level
Master of Philosophy, Honours, Vacation research experience scheme
Faculty
Faculty of Science
School
School of Mathematical Sciences
Research centre(s)

Modelling convection in porous media

When liquids of different densities mix, they can produce complex fingering patterns. This is particularly important in the flow of liquid in underground porous aquifers, where the density of the groundwater can be influenced by salinity or heat, as well as the insulation properties of porous materials. Another important application is the still-prototypical use of aquifers for carbon sequestration; the dissolution of CO2 into groundwater has a complex effect on its density, and convective mixing is crucial for accelerating the …

Study level
Master of Philosophy, Honours, Vacation research experience scheme
Faculty
Faculty of Science
School
School of Mathematical Sciences
Research centre(s)

Image-based computational model to predict intracranial aneurysm rupture

Intracranial aneurysms are bulging, weak areas of an artery that supply blood to the brain which are relatively common. While most aneurysms do not show symptoms, 1% spontaneously rupture which can be fatal or it can leave the survivor with permanent disabilities. This catastrophic outcome has motivated surgeons to operate on approximately 30% of aneurysms despite their rate of complications arising and cost of operation.The impact of aneurysm morphology on blood flow shear stress and rupture could educate surgical decision-making …

Study level
PhD, Master of Philosophy, Honours, Vacation research experience scheme
Faculty
Faculty of Engineering
School
School of Mechanical, Medical and Process Engineering
Research centre(s)
Centre for Biomedical Technologies
Centre for Biomedical Technologies

Characterising fatigue of 3D printed metamaterials

Each year, millions of people suffer from traumatic tissue damage due to cancers, congenital defects or injury. Biofabrication is the rapid 3D printing of replacement tissue and organs that are customised to the specific needs of the patient. This future of manufacturing technology is set to revolutionise regenerative medicine and deliver high quality health outcomes. The Biofabrication and Tissue Morphology group is a world class multi-disciplinary research team focused on embedding biofabrication into routine clinical use.Based at our state-of-the-art labs …

Study level
Vacation research experience scheme
Faculty
Faculty of Engineering
School
School of Mechanical, Medical and Process Engineering
Research centre(s)
Centre for Biomedical Technologies

Developing ANSYS multibody dynamics for application to problems in vehicle design

Vehicles experience a wide range of dynamically changing forces throughout driving. Race cars, especially, undergo extremely large loads during a race, and accounting for those loads in the design and analysis of all components is critical. Specialised vehicle dynamics software is often used to model such forces, while Finite Element Analysis (FEA) is a common approach to analyse components.The ANSYS software package provides an additional Multibody Dynamics module that enables the combination of rigid and flexible parts to be modelled …

Study level
Vacation research experience scheme
Faculty
Faculty of Engineering
School
School of Mechanical, Medical and Process Engineering
Research centre(s)

Mechanical testing of total shoulder replacement implant stability

In 2020, 46,919 total shoulder replacement (TSR) procedures were conducted in Australia, a 17% increase on the previous year. At 10 years post-operation, 12.3% will require revision, with 17.3% of revisions due to implant loosening. This is a significant load on the Australian healthcare system.To reduce the risk of implant loosening, surgeons propose different techniques for attaching the glenosphere (implant) to the glenoid (bone). Limited data is present however on the impact of these different techniques, if they reduce loosening, …

Study level
Vacation research experience scheme
Faculty
Faculty of Engineering
School
School of Mechanical, Medical and Process Engineering
Research centre(s)
Centre for Biomedical Technologies
Centre for Biomedical Technologies

Green polymer-inorganic composite materials

Composite materials are widely researched and widely used in applications such as aircraft, automobiles, ships, structural components and even the space industry.There is a need to create new composite materials which are environmentally friendly and do not use fossil fuel based products. Moreover, the properties of the composites need to be improved while at the same time minimising the costs involved.Consequently our research group is working on composite materials which not only include inexpensive inorganic fillers from the mining sector …

Study level
PhD, Master of Philosophy, Honours, Vacation research experience scheme
Faculty
Faculty of Engineering
School
School of Mechanical, Medical and Process Engineering
Research centre(s)

Targeting fibrosis: identification of novel natural compounds to modulate collagen expression

Liver disease is a huge and increasing burden on society; it can be due to a number of different reasons including excessive alcohol consumption, viral infections, and non-alcoholic liver disease. Each of these causes may have a different molecular pathway of developing the disease pathology, but one common feature is there is an injury or insult to the liver. This injury then results in activation of the wound healing process; when this healing process goes awry liver disease can develop, …

Study level
PhD, Master of Philosophy, Honours
Faculty
Faculty of Health
School
School of Biomedical Sciences
Research centre(s)

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