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Showing 1 to 12 of 12 for “"Constitutive behaviour"”.
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Constitutive behaviour of cement treated marine clay
… investigates the microstructure and macroscopic behaviour of laboratory prepared cement treated clay specimens that were cured under atmospheric, undrained and drained conditions. After a 7-day curing period, the volume-mass properties, unconfined compressive, isotropic compressive, undrained and …
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Hot tearing and constitutive behaviour of semi-solid aluminum alloys
… fraction porosity, and grain size on semi-solid constitutive behaviour. The simulations revealed that increased grain size and fraction porosity lead to a reduction in flow stress for a given fraction solid. Furthermore, local strain accumulation was linked to hot tearing, since strain localizes …
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Modelling the constitutive behaviour of poly(ethylene terephthalate) for the stretch blow moulding process
… PET containers. Understanding and modelling the behaviour of amorphous PET (aPET) is critical for design the optimum product and process.<br/><br/>However due to its nonlinear viscoelastic behaviour, the behaviour of aPET is highly sensitive to its thermomechanical history making the task of …
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Modelling of friction stir spot welding
… The first of these uses greatly simplified constitutive behaviour to convert the problem into one defined purely by kinematics. In doing so, the boundary conditions reduce to a small number of assumptions about the contact conditions between weld material and tool, and the model calculation …
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Physical Modelling of Instability in Granular Soils and Tsunami Hazards Associated with Coastal Slope Failures
… shear stress and strain sensors to quantify the constitutive behaviour and pore pressure response of loosely placed sand leading up to and during instability. Multiple instability events were observed in the dry specimen whereas a single instability event at lower inclinations occurred for …
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Computational and experimental modelling of the crushing of prepared sugar cane
… of porous media mechanics and elasto-plastic constitutive theory for the crushing of prepared sugar cane using finite element simulation. This research specifically investigates the experiments carried out on C. R. Murry Advanced Experimental Milling Facility using cane that has also passed …
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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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Modelling the Extrusion of a Hard-Metal Paste
… (i) measurements of the friction and bulk constitutive behaviour of pastes and (ii) numerical simulations of paste extrusion using these measurements as inputs. Two pastes were used: microcrystalline cellulose, calcium carbonate and water (MCC/CaCO3) and a commercial tungsten …
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Constitutive Modelling of Shear Localisation in Saturated Dilative Sand
… in dilatant hardening materials. Then constitutive relations are upgraded to provide mesh-independent results for different drainage conditions. First, the ability of critical state Nor-Sand model to simulate drained and undrained deformation of dense sand is evaluated. Then non-coaxial …
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Lateral-torsional buckling behaviour of monosymmetric steel sections formed with flange upstands
The study of the lateral-torsional buckling behaviour of steel beams has been largely focused on doubly symmetric beams and less so on monosymmetric sections. Monosymmetric sections, however, do offer some advantages over doubly symmetric beams if the monosymmetry is applied in a way that it can be …
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Modellazione dell’instabilità laterale delle barre di armatura nelle pile da ponti in cemento armato
È indubbio che la funzionalità e l’integrità strutturale di ponti, viadotti e sovrappassi costituisca non solo una prerogativa necessaria in fase di esercizio, ma anche in occorrenza di eventi speciali, come ad esempio i terremoti. Le analisi non lineari necessarie a valutare le prestazioni …