A5037055965- Metal Forming Simulation Techniques
- Microstructure and mechanical properties
- Metallurgy and Material Forming
- Advanced Surface Polishing Techniques
- High-Velocity Impact and Material Behavior
- Advanced Memory and Neural Computing
- Advanced Sensor and Energy Harvesting Materials
- Transcranial Magnetic Stimulation Studies
Universidad de Cádiz
2017-2023
This work applies the Buckingham Π theorem from dimensional analysis on superplastic processes in order to obtain laws of behaviour a simple way. For this reason, mathematical background is developed. The particular materials makes it necessary adapt way which these are treated, modelling them by viscosity function strain-rate. Then, applied set free-inflation tests formula that defines forming time as single geometric and material variables. Dimensional allows us reduce number variables...
Free-Bulge Forming (FBF), due to its simplicity, has been widely used as the main featuring test for superplastic forming (SPF) a large range of materials. Numerous tests have performed analytically, experimentally and numerically way determine relevant properties material characterize whole process. Nevertheless, high number variables involved in SPF process hampers analysis. This work applies Dimensional Analysis reduce facilitate characterization processes by analyzing most dimensionless...
In this work, a new methodology for evaluating the constitutive parameters of superplastic materials is presented. The proposed provides characterization material by means variable called apparent viscosity. This calculated three different through data collected free inflation tests made at temperatures and pressure values. viscosity was then used to calculate some which experimental were reproduced numerically in finite element commercial code. results obtained numerical simulations...
A new characterisation method based on free-bulge tests is proposed to find the characteristic parameters of strainstress relation in superplastic alloys. The applied experimental found literature and adhoc performed aluminium, magnesium titanium are then compared independent values obtained from tensile test computer-aided simulations. material evaluated as an apparent viscosity function strain-rate extracted height evolution at apex dome during forming process. Results show a good...
Abstract. The constant pressure free-inflation test is a very versatile and simple tool for analyzing different features of superplastic forming. In recent years, methods have been proposed to measure constitutive parameters the stress–strain relationship material, specifically K m power law model. However, this restricted be used in narrow strain-rate ranges, poor results are obtained when applied broader spectrum. To overcome problem, numerous models covering full range applicable forming...