Characteristics of bolted joint in plastic region tightening - Dispersion of tightening axial force and safety against fatigue.
Characteristics of bolted joint in plastic region tightening - Dispersion of tightening axial force and safety against fatigue.
复制标题
塑性区域拧紧中螺栓连接的特点 - 拧紧轴向力的分散和抗疲劳安全性。
DOI：
10.2493/jjspe1933.51.1383
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发表时间：
1985
影响因子：
--
通讯作者：
I. Yoshimoto
中科院分区：
文献类型：
--
作者：
N. Ohashi;M. Hagiwara;I. Yoshimoto
在本研究的第一部分中，进行了拧紧实验，重点是使用螺纹紧固件拧紧试验机的拧紧特性的评价。作为上述实验的结果，发现通过将螺栓紧固到弹性极限的扭矩梯度控制方法获得的轴向力分布的变化系数约为通过将螺栓紧固在弹性区域中的扭矩控制方法获得的轴向力分布的变化系数的三分之一。其次，对弹性极限拧紧和弹性区域拧紧的两个圆柱螺栓连接进行了疲劳试验。结果表明，拧紧到弹性极限的螺栓接头比用扭矩控制方法拧紧到弹性极限的螺栓接头具有更好的抗疲劳安全性。
In the first part of this study, the tightening experiments are performed with emphasis on an evaluation of tightening characteristics using threaded fastener tightening test machine. As a result of the above experiment, the coefficient of variation in the distribution of axial force by the torque gradient control method which tightens bolts up to the limit of elasticity is found to be about one-third of that obtained by the torque control method which tightens bolts in the elastic region. Secondly, the fatigue tests are performed with the bolted joint of two cylinders tightened by the elastic limit tightening or by the elastic region tightening. It is confirmed that the bolted joint tightened to the limit of elasticity has the better safety against fatigue than that tightened in the elastic region by the torque control method.