衝撃をうける接触面のすべり摩擦(第2報) : 接触面の仕上状態の影響

概要

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This study aims to clarify characteristics of impulsive friction and influence of conditions of contact. The coefficient of impulsive friction μ_i, on 10 different frictional surfaces is measured in the way reported in the previous report, and the relation between pressure of surface σ_n nand impulsive shearing stress τ_c; and μ_i is shown as μ_i=aσ_n^b exp(cσ_n). The mechanism of impulsive friction is treated on the basis of the theory of adhesive friction, and the frictional surfaces are observed, and each experimental curve is examined, The conclusions obtained are as follows : (1)From light to heavy load, μ_i, always decreases and asymptotically approaches toward zero. (2)τ_c increases as σ_n increases, and reaches maximum value T MPa when pressure of surface σ_n=Σ MPa and then asymptotically approaches toward zero. (3)Capacity of friction in a condition of contact is shown as Z=10^<-2> TΣ. Z becomes maximum 43.6 when the carbon steel has mirror surfaces and becomes minimum 2.0 when the above is oil-lubricated. On other conditions like carbon steel with surfaces which are rolled, zinc-plated, and roughly ground, it becomes 25.4,11.5,6.6 respectively.
公益社団法人精密工学会の論文
1984-02-05