Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/11744
Title: An experimental and comparative study of the self-loosening of bolted-joints under cyclic transverse loading
Authors: İnce, Umut
Güden, Mustafa
Keywords: Bolted-joints
Self-loosening
Numerical simulation
Junker test
Issue Date: 2021
Abstract: The capabilities of analytic models in predicting the experimental critical displacements of the self-loosening of bolted-joints were investigated experimentally and numerically. The experimental loosening rates were determined in a Junker test bench at a constant transverse displacement amplitude (0.45 mm) and under varying initial clamp force and clamp length and controlled bearing and thread friction coefficients. The analytic critical displacements were then calculated using experimental parameters. In addition, a three-dimensional accompanying finite element (FE) model was developed in order to calculate the ratio of spring constants engaging the thread to spring. The results showed relatively low capabilities of present analytic model in the prediction of the critical displacements of the self-loosening of bolted-joints. The efforts to modify the nut reaction moment and the inclination compliance of bolt head portion in the investigated equations however resulted moderate increase in the appropriate predictions. On the other side, the use of the reaction moment determined by FE model increased the appropriate prediction from 58.3 to 73.4%. The accuracy of the equations was further increased by the use of an appropriate kw value, but the increase in this case was only ~4%.
URI: https://doi.org/10.16984/saufenbilder.765481
https://app.trdizin.gov.tr/makale/TkRJeE9ESTFOUT09
https://hdl.handle.net/11147/11744
ISSN: 1301-4048
2147-835X
Appears in Collections:Mechanical Engineering / Makina Mühendisliği
TR Dizin İndeksli Yayınlar / TR Dizin Indexed Publications Collection

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