F-0410 ねじ締結体の動的すべり係数に関する研究(S37-3 ねじ(3))(S37 機械要素の設計・製造・応用技術)

概要

論文の詳細を見る
This paper describes on dynamic sliding coefficient in threaded joint which would be needed to maintain the initial condition where threaded joints have been tightened initially with suitable axial force in order for the joint not to take place loosening even if they suffered external changing force with time. From the reliable point of view, it is important to evaluate the reliability of threaded joint where receives external alternating force. Then the staircase method, which has been used under testing fatigue strength of material, is applied to estimate sliding coefficient between contact surfaces suffering the external vibrating force. The factors taken in the experiment are tightening force, amplitude and mean of external load, and coated film on contact surface of threaded element. The main results obtained are as follows: (1) In order to estimate dynamic sliding coefficient between threaded contact surfaces the staircase method was applied. Then it is found that the dynamic sliding coefficient between threaded contact surfaces is lower than static sliding coefficient. (2) It is recognized that the aluminum film is effective for the increase in static sliding coefficient between threaded contact surfaces, while, it has no effect on dynamic sliding coefficient
社団法人日本機械学会の論文
2001-08-22