螺栓连接
扳手
结构工程
应变计
连接(主束)
过程(计算)
工程类
机械工程
计算机科学
有限元法
操作系统
作者
Rafał Grzejda,Arkadiusz Parus
出处
期刊:IEEE Access
[Institute of Electrical and Electronics Engineers]
日期:2021-03-22
卷期号:9: 47372-47379
被引量:11
标识
DOI:10.1109/access.2021.3067956
摘要
The paper presents experimental studies of an asymmetric multi-bolted connection at the preloading state. Design assumptions and structure of a stand for testing forces in bolts in a multi-bolted connection were introduced. The tightening process was conducted with a wrench, monitoring the values of the forces in the bolts using a calibrated measuring system based on resistance strain gauges. The measurement data was processed using the Matlab R2018b Simulink program. Two methods of bolt tightening were tested: in one pass (in which the bolts were tightened in a specific sequence and each bolt was tightened immediately to the full preload value) and in several passes (in which the bolts were also tightened sequentially but the full preload value was applied to the bolts in three tightening cycles). The influence of the method and sequence of bolt tightening on the distribution of force values in bolts during and at the end of the preloading state was investigated. The results were statistically processed and summarized in the form of diagrams showing the distributions of normalized force values in the bolts for all the considered tightening cases. The tests were carried out for the selected connection and an assembly method was proposed which would make it possible to achieve the most even distribution of the force values in the bolts at its end, and thus before the connection exploitation state.
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