Abstract: A comprehensive approach for computing the lubricant flow as functions of the roughness orientation is presented. By using a mapping function, a periodic, anisotropic surface is transformed into ...

Abstract: A porous medium model is basically a macroscopic description of the fluid behavior and is considered more appropriate to the mixed lubrication regime. The present work has successfully combined ...

Abstract: Abnormally low bids and contractors’ opportunistic bidding behavior are frequently observed in the competitive bidding system. Many research findings have pointed out that price competition itself is not sufficient to ...

Abstract: Based on real-time observation of the workpiece surface in a series of Lo and Tsai’s (2002) compression-sliding experiment, it is found that the asperity contact area is much greater than that ...

Abstract: A theory employing the concept of potential flow and an easily implemented numerical method are developed. It can offer a preliminary prediction of the optimum blank shape with a little ...

Abstract: In the situation of serious tool-workpiece contact when a smooth surface is desired in metal forming, the lubricant is either enclosed within the micro pits or infiltrates the contact plateaus ...

Abstract: A model of a secondary hydrodynamic lubrication mechanism, which is called micro-pool or micro-plasto hydrodynamic lubrication, has been developed. It shows that, with sufficiently high viscosity ...

Abstract: The evolution of the surface topography and tool-workpiece contact behavior of an aluminum sheet during plastic deformation has been investigated by a series of indentation tests for various ...

Abstract: The present “realistic” friction model is examined by a series of upsetting tests. Specimens made of different aluminum alloys and prepared by various processes display diverse results. Severe ...

Abstract: Because of the constraints of the existing building, a reconstruction project is more complicated and difficult than a new project, and a multiphase reconstruction project is even more complicated and difficult than a ...