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中文摘要：
为了研究变密度微圆坑表面织构在往复运动下的减摩效果,根据活塞-缸套往复运动的变速特点,在模拟缸套的块试件的滑动接触表面行程上加工出不同均匀密度组合的微圆坑织构,与模拟活塞的销试件进行往复滑动摩擦试验.结果表明：与其他均匀密度织构相比,在较低载荷下,密度为0.1的均匀织构表面在较宽的滑动速度范围内表现出最佳的减摩效果,在较高载荷下,低速时的减摩效果较显著;中间区域为低密度、两端区域为高密度的变密度织构表面具有润滑减摩效果,反之设计的变密度织构表面则具有增大摩擦系数的作用;密度组合为0.3-0.1-0.3的变密度织构在较高载荷和滑动速度时能达到最佳的润滑减摩效果.因此,变密度织构在往复运动摩擦副接触表面设计中应该是低密度织构在中间,高密度织构在两端,密度的高低应该有一个合适的范围.
英文摘要：
In order to study the friction reduction effect of variable density micro-round dimple surface texture,based on the variable motion characteristics of piston/cylinder system,the micro-round dimple textures with different even densities were processed on the surface of block specimen taken as cylinder,the reciprocating sliding friction tests were carried out on this surface with a pin specimen taken as piston.The results show that the 0.1 even density texture surface provides a best friction reduction effect in a large velocity range under lower load,while under higher load the friction reduction effect is significant in lower sliding velocity;variable density textures with lower density texture in the middle and higher density texture at both ends have friction reduction effect,however the reverse design would increase the friction coefficient;the 0.3-0.1-0.3 variable density texture shows the best friction reduction effect under higher sliding velocity and higher load.The design of the variable density texture in reciprocating should be with lower density texture in the middle and higher density texture at both ends,and the combined density should be in a proper range.
同期刊论文项目
同项目期刊论文
An optimum design model for textured surface with elliptical-shape dimples under hydrodynamic lubric
A novel method to identify the scaling region for chaotic time series correlation dimension calculat
INFLUENCE OF SAMPLING LENGTH AND SAMPLING INTERVAL ON CALCULATING THE FRACTAL DIMENSION OF CHAOTIC A
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