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Considerable works were done on physical and geometric use of null curves in the literature ( [2]-[9] ). In this work, we give the analogue of the Frenet -Serret formulas on the lightlike surface and ...
The Variation of the Friction Coefficient in Pipe Connections Working Under Static and Dynamic Loads
Galling Time Dependent Friction Coefficient Lubrication
2009/10/14
The friction coecient and the galling process in metal to metal parts depend on many variables such as normal load, lubricant, roughness and design of the friction surfaces. Since developing a mathem...
Variation cutting speed on the five axis milling
Machining Effective cutting speed Multi-axis milling Tool orientation
2010/2/22
Design/methodology/approach: The methodology has consisted to dertemine cutting speed of each mode of tilt tool in five axes machining, and of proving a series of configurations and parameters combina...