Time-dependent dynamic, creep and shrinkage response of curved structural members. This project concerns curved structural members, such as bridge beams, that are subjected to dynamic excitation and to concrete shrinkage and creep. Hitherto, unified formulations for the structural behaviour of these members have not been properly developed. The proposal seeks to build on a previous ARC DP of the investigator that produces significant results for static loading, by developing a sophisticated meth ....Time-dependent dynamic, creep and shrinkage response of curved structural members. This project concerns curved structural members, such as bridge beams, that are subjected to dynamic excitation and to concrete shrinkage and creep. Hitherto, unified formulations for the structural behaviour of these members have not been properly developed. The proposal seeks to build on a previous ARC DP of the investigator that produces significant results for static loading, by developing a sophisticated methodology to handle non-static dynamic loading and for shrinkage and creep. It will develop advanced mathematical tools to enable the safe and efficient design of a multiplicity of structures that is of benefit to on and offshore Australian technology.Read moreRead less
Computational fracture analysis of structures and materials. This project aims to develop a computer simulation technique to address the safety of engineering structures. A novel numerical framework based on the scaled boundary finite element method will be developed to model the fracture process critical to assessing structural integrity. The expected outcomes of this project include an innovative technology for numerical simulation and improved capabilities to generate high-fidelity predictio ....Computational fracture analysis of structures and materials. This project aims to develop a computer simulation technique to address the safety of engineering structures. A novel numerical framework based on the scaled boundary finite element method will be developed to model the fracture process critical to assessing structural integrity. The expected outcomes of this project include an innovative technology for numerical simulation and improved capabilities to generate high-fidelity predictions of structural safety at minimum human efforts. The fully automatic and robust numerical tool developed in this project will help engineers and government authorities to perform safe and cost-effective design and management of engineering structures that are vital to modern economies.Read moreRead less
Unified nondeterministic dynamic safety assessment of softening structures. This project aims to develop a high-performance tool for the dynamic safety assessment of softening structures. The assessment of structures that exhibit softening, either at constitutive level or structural level, is essential for design and rehabilitation purposes, especially when the inevitable uncertainties in the system parameters need to be accounted for. This project aims to develop an advanced and unified framewo ....Unified nondeterministic dynamic safety assessment of softening structures. This project aims to develop a high-performance tool for the dynamic safety assessment of softening structures. The assessment of structures that exhibit softening, either at constitutive level or structural level, is essential for design and rehabilitation purposes, especially when the inevitable uncertainties in the system parameters need to be accounted for. This project aims to develop an advanced and unified framework that can model both stochastic and nonstochastic processes for these purposes. An advanced mixed finite element model underpins this framework, and both formulation and solution algorithms are based on mathematical programming formalism. The developed computational tool would be able to perform pure stochastic, pure nonstochastic, hybrid uncertain analyses and dynamic reliability assessment of structures.Read moreRead less
Three-dimensional contact and fracture analysis for safety assessment of structures. This project aims to address the safety assessment of engineering structures considering interfaces and cracks, which are nearly always the weakest parts of a structure system. Novel numerical approaches to model the contact of interfaces and crack faces and to simulate crack propagation under variable loads will be established based on the scaled boundary polytope elements and mathematical programming. It is an ....Three-dimensional contact and fracture analysis for safety assessment of structures. This project aims to address the safety assessment of engineering structures considering interfaces and cracks, which are nearly always the weakest parts of a structure system. Novel numerical approaches to model the contact of interfaces and crack faces and to simulate crack propagation under variable loads will be established based on the scaled boundary polytope elements and mathematical programming. It is anticipated that the developed numerical simulation tool will be robust and fully automatic. The intended outcome of this project is an innovative technology for numerical simulation and a rational predictive tool useful for cost-effective and timely planning, design and management of engineering structures.Read moreRead less
Stochastic geometrically nonlinear elasto-plastic buckling and behaviour of curved grid-like structures. It is vital to assess the safety of large spatially curved-complex structures for design and rehabilitation purposes when the inevitable uncertainties in structural parameters and loads are addressed. This project aims to develop an advanced stochastic framework for three-dimensional nonlinear elasto-plastic behaviour and buckling analysis of curved grid-like structures. A rational and powerf ....Stochastic geometrically nonlinear elasto-plastic buckling and behaviour of curved grid-like structures. It is vital to assess the safety of large spatially curved-complex structures for design and rehabilitation purposes when the inevitable uncertainties in structural parameters and loads are addressed. This project aims to develop an advanced stochastic framework for three-dimensional nonlinear elasto-plastic behaviour and buckling analysis of curved grid-like structures. A rational and powerful stochastic nonlinear elasto-plastic finite element model will be proposed to account for the random high-order geometric nonlinearity and material elasto-plasticity. Novel formulations and effective algorithms will also be devised for stochastic nonlinear analytical analysis. An efficient tool will be developed for reliability assessment of the class of structures.Read moreRead less
Scaled boundary finite-element approach for safety assessment of plates and shells under monotonic and shakedown loadings. This project develops an advanced numerical tool for the safety assessment of plate and shell structures under practical loading regimes. This tool permits timely decision making and is of vital assistance to engineers and government authorities on safe and cost-effective management of infrastructure asset.
Scaled boundary framework for adaptive and multiscale structural analysis. This project aims to establish an innovative numerical framework for the computer simulation of systems of engineering structures subject to dynamic loadings. Scaled boundary polytope elements and an octree algorithm for mesh generation are proposed for adaptive nonlinear dynamic analysis at multiscales. It is anticipated that the numerical modelling and simulation will be performed automatically from the material meso-st ....Scaled boundary framework for adaptive and multiscale structural analysis. This project aims to establish an innovative numerical framework for the computer simulation of systems of engineering structures subject to dynamic loadings. Scaled boundary polytope elements and an octree algorithm for mesh generation are proposed for adaptive nonlinear dynamic analysis at multiscales. It is anticipated that the numerical modelling and simulation will be performed automatically from the material meso-structures to achieve reliable predictions at minimum human and computational efforts. The intended outcome of this project is an innovative technology for numerical simulation and a rational predictive tool useful for the planning, design and management of engineering structures, and for the virtual testing of materials.Read moreRead less
From CAD and digital imaging to fully automatic adaptive 3D analysis. This project aims to develop, directly from computer-aided design models or digital images, an automatic numerical simulation approach for the safety assessment of engineering structures in three dimensions. Underpinning this novel approach is the proposed use of scaled boundary polytope elements and a complementary octree algorithm for mesh generation. Complex loadings are intended to be addressed effectively by the developed ....From CAD and digital imaging to fully automatic adaptive 3D analysis. This project aims to develop, directly from computer-aided design models or digital images, an automatic numerical simulation approach for the safety assessment of engineering structures in three dimensions. Underpinning this novel approach is the proposed use of scaled boundary polytope elements and a complementary octree algorithm for mesh generation. Complex loadings are intended to be addressed effectively by the developed adaptive shakedown analysis leading to factors of safety familiar to engineers and directly usable in design. The expected primary outcome is an innovative technology for numerical simulation and the development of an invaluable numerical tool for the effective safety assessment of engineering structures.Read moreRead less
A New Generic Approach for Assessing Blast Effects on Reinforced Concrete Members. A framework allow for both flexural and shear response analysis using a new segmental approach is developed in this proposal. A blast test program is designed to validate the framework for reinforced concrete members. The validated framework is then used to derive normalised pressure impulse programs for reinforced members in unconfined and confined spaces. This project will provide design engineers guidelines for ....A New Generic Approach for Assessing Blast Effects on Reinforced Concrete Members. A framework allow for both flexural and shear response analysis using a new segmental approach is developed in this proposal. A blast test program is designed to validate the framework for reinforced concrete members. The validated framework is then used to derive normalised pressure impulse programs for reinforced members in unconfined and confined spaces. This project will provide design engineers guidelines for reliably and quickly assessing the effect of different kinds of blast loads on different types and properties and geometries of reinforced concrete structural members, saving computation time and efforts while providing increased realism and accuracy.Read moreRead less
A high-performance stochastic scaled boundary finite-element framework for safety assessment of structures susceptible to fracture. This project addresses the reliability assessment of structures considering cracks caused by ageing and extreme loading that are affecting vital infrastructure. The outcome of this project will permit more rational decision making in the safe and cost-effective management of ageing infrastructure.