Stents for angioplasty have been extensively used to treat coronary diseases. The aim of this study is to analyze the expansion of the stent and the contact with the artery using tube hydroforming simulation. In the simulation, the contact stress and the final shape of the artery after stent expansion process using the Stampack (®;) software will be studied. A model of a commercial stent made o...

Grain size gradient materials are a type of new structural material with the advantages both coarse and fine grains. To study effect normal grain on mechanical properties microstructure aluminum alloy tubes during hydroforming, distribution outer inner grains was obtained using spinning annealing methods, biaxial stress determined hydraulic bulging experiments. Gradient thicknesses 300, 475, 57...

This paper is devoted to the hydroforming performances of toroidal pressure hulls with octagonal cross-sections, together buckling hydroformed hulls. The cross-sections preforms are inscribed from circular perfect shells a 150 mm major radius, 75 section and 1.058 wall thickness. nonlinear finite-element method was employed study under various pressures. To verify numerical findings, three nomi...

In this study, a numerical/experimental analysis is proposed to investigate the possibility of reshaping sheet metal-based End-of-Life (EoL) components using Hydroforming (SHF). Returned EoL are challenging be reformed, they usually characterised by high heterogeneity as there localised thinning areas (caused original forming processes), and overall formability reduced with respect flat materia...