排序方式: 共有3条查询结果,搜索用时 0 毫秒
1
1.
J. Girardot P. Lorong L. Illoul N. Ranc M. Schneider V. Favier 《International Journal of Material Forming》2017,10(2):205-219
The laser drilling process is the main process used in machining procedures on aeronautic engines, especially in the cooling parts. The industrial problematic is to reduce geometrical deviations of the holes and defects during manufacturing. The interaction between a laser beam and an absorbent metallic matter in the laser drilling regime involves thermal and hydrodynamical phenomenon. Their role on the drilling is not yet completely understood and a realistic simulation of the process could contribute to a better understanding of these phenomenon. The simulation of such process induces strong numerical difficulties. This work presents a physical model combined with the use of the original Constraint Natural Element Method to simulate the laser drilling. The physical model includes solid/liquid and liquid/vapor phase transformations, the liquid ejection and the convective and conductive thermal exchanges. It is the first time that all these phenomena are included in a modelling and numerically solved in a 2D axisymmmetric problem. Simulations results predict most of measurements (hole geometry, velocity of the liquid ejection and laser drilling velocity) without adjusting any parameters. 相似文献
2.
3.
Illoul Cherif Zazi Nacer Debiane Ferroudja Chopart Jean-Paul 《Protection of Metals and Physical Chemistry of Surfaces》2018,54(5):876-883
Protection of Metals and Physical Chemistry of Surfaces - In this work we investigated the mechanical and corrosion behavior of aluminum can bodies. The results obtained show homogeneous... 相似文献
1