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題 名 | 鍍層硬度曲線對粗糙表面碎形微接觸性質之影響研究=The Effect of Hardness-Depth Curve of Coating Film on Fractal Microcontact Properties between Rough Surfaces |
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作 者 | 洪政豪; 陳新郁; 古明曜; | 書刊名 | 國立虎尾科技大學學報 |
卷 期 | 25:1 民95.03 |
頁 次 | 頁9-17 |
分類號 | 440.12 |
關鍵詞 | 碎形幾何學; 接觸力學; 真實接觸面積; 鍍層; 粗糙度參數; Fractal geometry; Contact mechanics; True contact area; Coating film; Roughness parameter; |
語 文 | 中文(Chinese) |
中文摘要 | 本文利用表面形貌的碎形幾何理論探討粗糙表面鍍層之接觸力學,在考濾鍍層硬度曲線下建立碎形微接觸公式,其中鍍層波峰的微硬度以接觸面波峰變形曲線函數表示,以適用所有硬鍍層與深度的關係變化。新模式預測的真實接觸面積在分析的所有粗糙度參數、材料參數、施加負荷參數範圍下均比舊模式的預測值大。當在低無因次負荷下,尤應注意碎形粗度參數值的減少將可能造成真實接觸面積的明顯增加。本文提供瞭解鍍層硬度曲線與真實接觸面積關係的一種有效方法,將有助於精密機械與微磨潤系統之進一步研究。 |
英文摘要 | In this work, fractal characterization of surface topography is applied to the study of contact mechanics between two coating films of rough surfaces. A fractal microcontact model that takes into account the coating hardness has been proposed. With coating film, the micro-hardness of asperity can be described as function of asperity deformation of contact surfaces. A compact curve formula is proposed to describe this phenomenon. Results show that the increase of fractal roughness parameter G leads to the substantial increase of true contact area under low dimensionless applied load. The new model has larger predicted contact areas than the old model for any given roughness parameters, material parameters, and applied loads. This model also provides an efficient tool for understand the relation between true contact area and hardness curve of coating film, which are important for precision machine and other microtribologcial systems. |
本系統中英文摘要資訊取自各篇刊載內容。