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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference vol.2: Computer Technology; 20050717-21; Denver,CO(US) >Simplified Analysis of the Tightening Process of Bolted Joint with a Bolt Heater
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Simplified Analysis of the Tightening Process of Bolted Joint with a Bolt Heater

机译：螺栓加热器螺栓连接的拧紧过程的简化分析

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摘要

A bolt heater is frequently used when tightening large bolts that cannot be tightened with other methods. Although the tightening process inherently needs a fair amount of working hours, a bolt heater is less expensive than the other tightening tools and it can be applied to the tightening operation in a narrow space. In this paper, an elementary method is proposed to evaluate the tightening process with a bolt heater, aiming at its broader use for middle-sized bolts. One-dimensional finite difference method is employed to analyze the heating process with taking the effects of heat transfer through small gaps into consideration, by which the corresponding bolt elongation is calculated for the specified heating period. The equation relating the bolt elongation and axial bolt force is also proposed, in which the effects of interface stiffness due to surface roughness are incorporated for better estimation of the axial bolt force. The effectiveness of the elementary method proposed here is demonstrated by experiments.
机译：拧紧无法用其他方法拧紧的大螺栓时，经常使用螺栓加热器。尽管拧紧过程固有地需要相当长的工作时间，但是螺栓加热器比其他拧紧工具便宜，并且可以在狭窄的空间中用于拧紧操作。本文提出了一种基本方法来评估螺栓加热器的拧紧过程，旨在将其广泛应用于中型螺栓。考虑到通过小缝隙传热的影响，采用一维有限差分法来分析加热过程，从而针对指定的加热时间计算相应的螺栓伸长率。还提出了与螺栓伸长率和轴向螺栓力有关的方程，其中结合了由于表面粗糙度引起的界面刚度的影响，以便更好地估算轴向螺栓力。通过实验证明了本文提出的基本方法的有效性。

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