STUDY ON THE INFLUENCE OF BOLT PRELOAD FORCE ON BOLT INTERFACE

Bolt interface’s characteristics that existed in aerostatic bearing were affected by many factors,such as part’s material of interface,surface topography,geometric accuracy of interface,interface connect forms and so on. The most important factor was bolt preload force. The characteristics of bolt i...

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Bibliographic Details
Published inJi xie qiang du Vol. 40; pp. 392 - 397
Main Authors ZHAO Gong, WANG BaoRui, YU Guang, YANG Hong, HUANG XinYu
Format Journal Article
LanguageChinese
Published Editorial Office of Journal of Mechanical Strength 01.01.2018
Subjects
Aerostatic bearing;Bolt interface;Bolt preload force;Finite element emulation method;Experimental modal analysis method
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Summary:Bolt interface’s characteristics that existed in aerostatic bearing were affected by many factors,such as part’s material of interface,surface topography,geometric accuracy of interface,interface connect forms and so on. The most important factor was bolt preload force. The characteristics of bolt interface were identified by finite element method（ FEM） and experimental modal analysis method. The influence of bolt preload force on bolt interface’s characteristics was analyzed. Two lows were concluded. Firstly,eigen frequency of interface increased with the increase of bolt preload force. Secondly,bolt interface could be counted as bonded interface in finite element emulation analysis,when the bolt preload force increased to a certain value.
ISSN:1001-9669