塑性座金によるボルト軸力の制御と振動外力の影響 : 塑性座金を用いた機械継手の設計

概要

論文の詳細を見る
Low axial load of bolts causes them to loosen or fatigue. A load control steel washer which deforms plastically is presented. It controls the bolt load to a constant value which agrees with the yield strength of the washer. The accuracy of the bolt load with the plastic washer method is higher than that with the torque control method. This control mechanism is analyzed by elastic-plastic FEM. This high and constant bolt load introduced by the plastic washer prevents the bolt joints from loosening and fatigue. In addition, the change in bolt load caused by the external force of joints is less with the plastic washer than with the fiat washer. This is effective to raise the fatigue strength of the bolt joints. These results are discussed from the low stiffness of the plastic washer after a little loosening of the bolt.
一般社団法人日本機械学会の論文
1997-10-25