現代工業發展開始往環保走向進展，以往機械元件為了要耐受嚴苛環境，常會在兩接觸元件間加入潤滑液以避免元件表面的直接接觸，且多為油基潤滑液。如今因應環保需求，已有水基潤滑液研究的發展，如此一來，以水基潤滑劑搭配特定接觸材料所引發的電雙層(Electrical double layer)效應對彈液動潤滑(Elastohydrodynamic lubrication)的影響勢必需更進一步探討。
本研究模擬一剛球擠壓陶瓷基材耦合電解質溶液潤滑膜系統，針對定負載下兩接觸偶在擠壓過程中的彈液動變化，利用有限元素法耦合Reynolds方程式(Reynolds equation)、線性彈性方程式以及負載平衡方程式，分析擠壓過程中電雙層效應對潤滑液膜的暫態壓力、膜厚、彈性變形的影響。
經模擬後分析其結果得知：當邊界電位上升，視黏度(Apparent viscosity)效應也提高，並在膜厚越小時越明顯。而楊氏模數(Young’s modulus)越大，視黏度效應也越大，相同擠壓時間下所承受壓力也越大，膜厚則因彈性變形程度較小而較薄。相同材料下負載大者反抗液膜阻力較大，擠壓速度快速下降，壓力趨近Hertz壓力分布，膜厚也較大。重疊電雙層情況下邊界正負離子濃度分布極度不均，邊界電位越大越明顯。而在加入電導率變化後，視黏度效應下降，最終膜厚也降低，但壓力變化受電導率變化影響仍不明顯。本研究分析所獲之結論，望可作為未來工業選用潤滑液或接觸元件材料時考量的依據。

In this study, a rigid-ball squeezed ceramic-based coupled electrolyte solution lubricating film system was simulated. The influences of the electric double layer effect on the transient pressure, thickness of film and elastic deformation of the lubricating fluid film were analyzed. When the boundary potential rised, the apparent viscosity effect also increased, and the smaller the thickness of film was, the more obvious the effect was. The larger the Young's modulus, the greater the apparent viscosity effect, the greater the pressure under the same squeeze time, and the thinner the film thickness due to the smaller degree of elastic deformation. After the change of electric conductivity, the apparent viscosity effect decreased, and the final thickness of film also decreased, but the pressure was still not affected by the change of electric conductivity.

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