This research aims to investigate the material flow behaviour and microstructure evolution in friction stir welded joints of dissimilar aluminium alloys AA2024/AA5086. AA2024 plate was placed on re- treating side; using threaded conical flat shoulder tool rotating at 635 rpm moving along joint line with a speed 75mm/min. Mixing both clearly visible zone resulted features typical welding solid s...

Theoretical analysis and finite element method were used to simulate the cold nosing process of commercial purity Aluminum tubes into conical hemispherical dies. The influences parameters, namely initial tube wall thickness, semi-die angle coefficient friction investigated. results obtained in terms load-displacement curves, thickness distribution deformed parts, ratios strain distributions. Ac...

Conical shock waves are generated as sharp conical solid projectiles fly supersonically in the air. We study such conical shock waves in steady supersonic flow using isentropic Euler system. The stability of such attached conical shock waves for non-symmetrical conical projectile and non-uniform incoming supersonic flow are established. Meanwhile, the existence of the solution to the Euler syst...

This paper deals with free vibration analysis of continuously graded fiber reinforced (CGFR) truncated conical shell based on third-order shear deformation theory (TSDT), by developing special power-law distributions. The orthotropic (CGFR) truncated conical shell are clamped and simply supported at the both ends. It is assumed to have a smooth variation of fibers volume fraction in the thickne...

Droplet impact affects water collection, which is the key to investigating icing process on an aero-engine spinner. Different from a stationary spinner, droplet affected by Coriolis acceleration and centrifugal rotating spinners, showing different dynamics. Based Eulerian method, using coordinate system we numerically investigated characteristics three shapes of spinners ANSYS Fluent. The resul...

By a systematic method we construct general classes of exact and selfconsistent axisymmetric MHD solutions describing flows which originate at the near environment of a central gravitating astrophysical object. The unifying scheme contains two large groups of exact MHD outflow models, (I) meridionally self-similar ones with spherical critical surfaces and (II) radially self-similar models with ...

We investigate theoretically the generation of extreme-ultraviolet (EUV) beams carrying fractional orbital angular momentum. To this end, we drive high-order harmonic generation with infrared conical refraction (CR) beams. We show that the high-order harmonic beams emitted in the EUV/soft x-ray regime preserve the characteristic signatures of the driving beam, namely ringlike transverse intensi...

Violations of the Born-Oppenheimer approximation (BOA) and the consequent nonadiabatic dynamics have long been an object of intense study. Recently, such dynamics have been induced via strong coupling of the molecule to a high-amplitude (spatially confined) mode of the electromagnetic field in optical cavities. However, the effects of a cavity on a pre-existing avoided crossing or conical inter...

We study the thermodynamics of ${\mathrm{AdS}}_{4}$ black hole solutions Einstein-Maxwell theory that are accelerating, rotating, and carry electric magnetic charges. focus on class for which horizon is a spindle can be uplifted regular Sasaki-Einstein spaces to give $D=11$ supergravity free from conical singularities. use holography calculate Euclidean on-shell action define set conserved char...