トルク法によるボルト締付け過程の力学的特性について

概要

論文の詳細を見る
In the tightening process of a bolted joint using torque control, the effect of friction on axial force and torque is an issue of great interest. In this study, the mechanical behaviors of a bolted joint during tightening, such as variations of axial force and torque, are investigated both experimentally and numerically. Hence, friction coefficients on pressure flank of screw thread and the nut bearing surface are estimated by measuring the total torque, axial force and torque applied to the bolt, and compared with variations of axial force and torque. The validity of the finite element approach proposed here for evaluating changes in torque and axial force is ascertained by comparing the numerical results to the experimental ones. It is shown that the size of grip length has some influence on the reduction of torque and axial force.
1997-05-25