Model and Simulation of Fluid Hydrodynamic Pressure at the Cutting Zone Considering the Surface Roughness

Chang He Li; Yan Zhou; Guang Qi Cai

doi:10.4028/www.scientific.net/AMR.118-120.655

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Model and Simulation of Fluid Hydrodynamic Pressure at the Cutting Zone Considering the Surface Roughness
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 118-120Model and Simulation of Fluid Hydrodynamic...

Model and Simulation of Fluid Hydrodynamic Pressure at the Cutting Zone Considering the Surface Roughness

Abstract:

The theoretical hydrodynamic pressure modeling were presented for flow of coolant fluid through the grinding zone in flood delivery grinding using roughness surface grinding wheel. The simulation results show that the hydrodynamic pressure was proportion to grinding wheel velocity, and inverse proportion to the minimum gap between wheel and work surface and the maximum pressure value was generated just in the minimum gap region in which higher fluid pressure gradient occuring. It can also be concluded the surface roughness of grinding wheel and workpiece makes the contact zone’s hydrodynamic pressure rough and unstable, i.e. the value curve considering roughness is not smooth, leading to the micro-elastohydrodynamic lubrication phenomenon.