CAJ | 학술논문

为了探讨凹坑形非光滑表面的形貌参数对于表面摩擦性能的影响，进一步证明自组装凹坑形非光滑表面的耐磨性能，利用Ansys热结构耦合的方法，对影响凹坑形仿生非光滑表面耐磨性的形貌参数及外加载荷条件进行了有限元仿真模拟，并利用能量损耗与能量守恒理论对等效摩擦系数进行了推导，通过等效摩擦系数的对比，最终确定出最优的形貌参数组合：凹坑直径为2μm，间距为4．5μm，涂层厚度为200μm，压力系数为1000，速度为3 ms/时，凹坑形仿生非光滑涂层表面的减摩性能最佳．并且通过凹坑形仿生非光滑表面与光滑表面在相同外加条件下的耐磨性对比，验证了凹坑形仿生非光滑表面具有优异的减摩减阻性能，与未涂涂层的光滑表面相比其减阻率可达48．42％，与涂有具有相同热物理性能的光滑涂层表面相比，其减摩效率可提高15．57％．
위료탐토요갱형비광활표면적형모삼수대우표면마찰성능적영향，진일보증명자조장요갱형비광활표면적내마성능，이용Ansys열결구우합적방법，대영향요갱형방생비광활표면내마성적형모삼수급외가재하조건진행료유한원방진모의，병이용능량손모여능량수항이론대등효마찰계수진행료추도，통과등효마찰계수적대비，최종학정출최우적형모삼수조합：요갱직경위2μm，간거위4．5μm，도층후도위200μm，압력계수위1000，속도위3 ms/시，요갱형방생비광활도층표면적감마성능최가．병차통과요갱형방생비광활표면여광활표면재상동외가조건하적내마성대비，험증료요갱형방생비광활표면구유우이적감마감조성능，여미도도층적광활표면상비기감조솔가체48．42％，여도유구유상동열물이성능적광활도층표면상비，기감마효솔가제고15．57％．
In order to investigate the influence of morphology parameters of a pit-shaped non-smooth surface on the surface frictional properties , and to further prove the abrasion resistance of a self-assembled pit-shaped non-smooth surface, the coupled thermal structural method in Ansys was used for the finite element simulation of various mor -phology parameters and applied load conditions that affect wear-resisting properties of the bionic non-smooth pit-shaped surface .The equivalent friction coefficient is derived using the energy loss and conservation theory , and by contrasting the equivalent friction coefficient , the optimal combination of morphology parameters is ultimately deter-mined , namely that the pit-shaped bionic non-smooth surface coating has the best anti-friction property when the pit diameter is 2μm, the distance between pits is 4.5μm, the coating thickness is 200μm, the pressure coefficient is 1000 Pa/mm, and the sliding speed is 3 m/s.Comparing the wear resistance of the pit-shaped bionic non-smooth surface with the smooth surface in the same applied load conditions , the pit-shaped bionic non-smooth surface dem-onstrates excellent wear resistance and drag reduction performance;the drag reduction rate is up to 48.42%as com-pared with the smooth surface without the coating , and the friction reducing efficiency may increase 15.57%as compared with the smooth coating surface with the same thermo-physical properties .