Interaction of Local and Distortional Buckling in Thin-Walled High Strength Steel Sections. Recent research at the University of Sydney has shown that the local and distortional buckling modes in thin-walled high strength steel sections may have adverse interaction. Cold-Formed steel sections of this type are used in residential construction, ceiling systems, partitioning systems in offices and other light gauge applications. The project will develop mathematical models of the interaction beha ....Interaction of Local and Distortional Buckling in Thin-Walled High Strength Steel Sections. Recent research at the University of Sydney has shown that the local and distortional buckling modes in thin-walled high strength steel sections may have adverse interaction. Cold-Formed steel sections of this type are used in residential construction, ceiling systems, partitioning systems in offices and other light gauge applications. The project will develop mathematical models of the interaction behaviour of sections of this type for a wide range of section geometries. A major outcome will be design methods which accurately quantify the interaction behaviour based on the models. Testing will be undertaken to support the theoretical developments and to calibrate the design models.Read moreRead less
Multi-Scale Model-Based Simulation of Glass Fragmentation under Blast Loading. It is estimated that most injuries from bomb blasts can be attributed to airborne sharp glass fragments. The proposed project will help us gain better understanding of glass failure mechanism under impact/blast loading. The results from the proposed project are expected to help in developing more effective blast-resistant transparency, ensuring the reliability and quality of buildings and facilities, mitigating injury ....Multi-Scale Model-Based Simulation of Glass Fragmentation under Blast Loading. It is estimated that most injuries from bomb blasts can be attributed to airborne sharp glass fragments. The proposed project will help us gain better understanding of glass failure mechanism under impact/blast loading. The results from the proposed project are expected to help in developing more effective blast-resistant transparency, ensuring the reliability and quality of buildings and facilities, mitigating injury or death due to flying glass fragments, and eventually enhancing public safety and security.Read moreRead less
Reliability and full-range analysis of joints in steel frameworks. The project has two main components, namely to establish a mechanics-based nonlinear model for representing joints in structural analyses, and a reliability framework at system level that considers randomness in the strength and behaviour of both members and joints. As its main aim, the project aims to pave the way for introducing computer-based direct design of steel frames in the structural engineering community, thus obviating ....Reliability and full-range analysis of joints in steel frameworks. The project has two main components, namely to establish a mechanics-based nonlinear model for representing joints in structural analyses, and a reliability framework at system level that considers randomness in the strength and behaviour of both members and joints. As its main aim, the project aims to pave the way for introducing computer-based direct design of steel frames in the structural engineering community, thus obviating the need for checking member and joint strengths to a structural standard. The direct design approach is more accurate, economical and faster than current design practice, provides more uniform structural system reliability, and encourages innovation in structural and architectural forms.Read moreRead less
Understanding and controlling ion-neutral interactions. Australia faces significant environmental and technological challenges including development of clean, sustainable energy sources and technologies that do not adversely affect the terrestrial atmosphere. This project seeks to facilitate a cleaner, greener future through investigations of fundamental chemical interactions responsible for hydrogen storage in solid media, and atmospheric processes responsible for the production and destruction ....Understanding and controlling ion-neutral interactions. Australia faces significant environmental and technological challenges including development of clean, sustainable energy sources and technologies that do not adversely affect the terrestrial atmosphere. This project seeks to facilitate a cleaner, greener future through investigations of fundamental chemical interactions responsible for hydrogen storage in solid media, and atmospheric processes responsible for the production and destruction of ozone. In both cases, the key interactions between ions and neutral molecules will be elucidated through high-resolution laser studies. Ensuing experimental data will play a crucial role in controlling and predicting ion-neutral interactions in technological and environmental contexts.Read moreRead less
Towards a Microscopic Understanding of Anion Solvation. Atomic and molecular anions are ubiquitous components of oceans, rivers, lakes, and the atmosphere, and serve as key participants in natural and industrial chemical processes. In most situations ions are surrounded by a structured sheath of neutral solvent molecules which profoundly affects their physical and chemical properties. Currently, interactions between anions and solvent molecules are poorly understood. In this project we will use ....Towards a Microscopic Understanding of Anion Solvation. Atomic and molecular anions are ubiquitous components of oceans, rivers, lakes, and the atmosphere, and serve as key participants in natural and industrial chemical processes. In most situations ions are surrounded by a structured sheath of neutral solvent molecules which profoundly affects their physical and chemical properties. Currently, interactions between anions and solvent molecules are poorly understood. In this project we will use lasers to probe clusters consisting of just a few molecules attached to an anion, generating information that will enhance our ability to predict and control chemical processes involved in drug design, salination, atmospheric chemistry, and chemical waste remediation.Read moreRead less
System reliability-based criteria for designing steel structures by advanced analysis. The aim of the project is to develop a new system-based criterion for designing steel structures using advanced analysis methods. The outcome of the research will help industry to design safer and more economic steel structures, thus enabling the profession to stay competitive in the national and international marketplace.
Lighting up the charged brigade: laser spectroscopy of protonated and metal-containing complexes. Increasingly, the design of new pharmaceuticals uses computer modeling to account for the shapes of molecules and how they interact with their surroundings. The strongest forces between molecular components are those that involve charged chemical species known as ions. In this project, we will develop advanced laser-based techniques to study in unprecedented detail how molecules respond to the prese ....Lighting up the charged brigade: laser spectroscopy of protonated and metal-containing complexes. Increasingly, the design of new pharmaceuticals uses computer modeling to account for the shapes of molecules and how they interact with their surroundings. The strongest forces between molecular components are those that involve charged chemical species known as ions. In this project, we will develop advanced laser-based techniques to study in unprecedented detail how molecules respond to the presence of nearby charge, or to acquiring charge themselves. Understanding the nature of these attractions, and the structural changes that they induce eventually results in more accurate computer models. This has relevance to fields that include the architecture of proteins, recognition of signaling molecules in the brain, and drug development.Read moreRead less
Origami structures and materials: energy absorption and impact mechanics. This project will devise novel structures and advanced metamaterials to mitigate injury and death from impact or blast loading, using traditional origami folding concepts of design. This technology will have applications to many industries and occupations including vehicle manufacture and the military, as well as personal and public safety. Experiments and advanced numerical simulations will be performed and then analytica ....Origami structures and materials: energy absorption and impact mechanics. This project will devise novel structures and advanced metamaterials to mitigate injury and death from impact or blast loading, using traditional origami folding concepts of design. This technology will have applications to many industries and occupations including vehicle manufacture and the military, as well as personal and public safety. Experiments and advanced numerical simulations will be performed and then analytical models of structural plasticity and impact dynamics will be established to capture the physics involved. The findings will provide an insight into the fundamental mechanics of structures and metamaterials, as well as guidelines for their optimum design.Read moreRead less
The role of low-energy excited states in solar-energy capture. This project aims to determine the nature and role of the lowest-energy excited states in most natural photosynthetic reaction centres and light-harvesting complexes. The lowest-energy states of bacterial reaction centres are critical to function and are used as a paradigm in artificial organic solar-energy capture, but for most photosystems their nature remains unknown. The project aims to answer the critical question of why they do ....The role of low-energy excited states in solar-energy capture. This project aims to determine the nature and role of the lowest-energy excited states in most natural photosynthetic reaction centres and light-harvesting complexes. The lowest-energy states of bacterial reaction centres are critical to function and are used as a paradigm in artificial organic solar-energy capture, but for most photosystems their nature remains unknown. The project aims to answer the critical question of why they do not actually prevent function. It is expected that both the outcomes obtained and techniques developed will be directly relevant to solar-energy device design. The project will apply five existing, complimentary and purposely built spectrometers as well as quantum electronic and nuclear simulation techniques to identify and characterise three key systems.Read moreRead less
Sandwich Structures with Folded Core under Impact and Blast Loading. This project aims to support the development of new materials resistant to impacts. Novel sandwich panels making use of Miura-ori folded cores have superior performance relative to monolithic solid plates, in terms of stiffness and strength. They have great potential to be used in commercial and military vehicles as well as protective structures, which can be subjected to impact and blast loading. This project aims to systemat ....Sandwich Structures with Folded Core under Impact and Blast Loading. This project aims to support the development of new materials resistant to impacts. Novel sandwich panels making use of Miura-ori folded cores have superior performance relative to monolithic solid plates, in terms of stiffness and strength. They have great potential to be used in commercial and military vehicles as well as protective structures, which can be subjected to impact and blast loading. This project aims to systematically investigate the impact and blast response of such sandwich panels by establishing theoretical models and conducting experiments and advanced simulations. The findings may provide an insight into the fundamental mechanics of sandwich panels with folded cores under impact and blast loading, as well as guidelines for optimum design of these novel structures.Read moreRead less