ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Considering the productivity and the maintenance, most of machine and product hasmany joints (fastening, welding and adhesive joint). Especially, the thread joint has been used themost mainly as a machine element. However, many troubles on strength and reliability of thesemachine and product are generating in these joints. In this paper, we have evaluated the sliding andthe self loosening behavior of thread joints under transverse loading, where the entire response ofthe thread joint portion exhibits an inelastic one. The finite element analysis using a simple modelof thread joints with respect to the relative sliding motion between the parts was performed andcompared with the experimental results under quasi-static loading. The critical relative slippage(Scr), less than the value which thread joints can keep the fastening, was obtained by the result ofcyclic loading tests. In addition, this critical relative slippage was estimated according to thetheoretically obtained equation considering the bolt bending and the geometrical constraintcondition. The inclination compliance (kw) of the bolt head used in this equation was evaluated bythe comparison of experimental and analytical results from theoretical equation. In consideration ofthe nonlinearity of kw with respect to the bolt axial tension, the Scr is well estimated by thisequation
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.340-341.1467.pdf
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