科研之友
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摘要
Micro dimples have various applications, ranging from reducing friction in energy-related applications, being a template for growing nanotubes in a controlled manner, to generating patterned reflections in optical applications. Microforming has the potential of economically creating micro dimples over a large surface area. However, to make this process fully viable in achieving high quality micro-dimples, one has to address the bumps or pile-ups built up in the process. This research investigated the effect of relative velocity on shape distribution of the micro-dimples as the relative velocity between the forming tool and sample affects frictional force, which plays an important role in determining the final profile of the formed dimple. Both experimental and numerical studies were employed to analyze the micro dimple forming. The results demonstrated a clear relationship between relative velocity and frictional force, and its significant effect of relative velocity on the final profile of the dimple. The experimental results and FEM simulation results matched very well.
- 出版日期2010-9
- 单位西北大学
