This study investigated the gas jet forming process for optical aspherical mirror blanks. The trend of influence parameters on surface shape blanks was inferred by analysing variation in morphology stream. Based theoretical analysis, inference verified numerical simulation. experimental results were compared with simulation predictions, and it found that average prediction deviation diameter 1....

The high-speed forming process is the key to attaining difficult and irregular profiles on ductile materials. In present work, we proposed all-atom model of gas detonation process, wherein molecular dynamics (MD) simulations were performed aluminum workpiece at different loading speeds similar various pressure values in process. deformation response an for a wide range speeds, 0.1–8 Å/ps, was i...

In this study, hot metal gas forming process of AA6063aluminumtubeis studied with a focus on heat transfer of both fluid and solid phases numerically. An experimental study is simultaneously conducted to validate the numerical method. Some of the most important outputs of the present study, are velocity distribution of fluid inside the tube as well as the fluid in the gap between tube and matri...

Within the subseafloor, methane hydrates form within the gas hydrate stability zone (GHSZ). Two areas within the Gulf of Mexico (GOM) were investigated in this study: Keathley Canyon and Atwater Valley. The GOM contains an underlying petroleum system and deeply buried, yet dynamic salt deposits. Salt tectonics and fluid expulsion upward through the sediment column lead to the formation of fract...