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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.13 [2006] >
IJEMS Vol.13(5) [October 2006] >
| Title: | Experimental and analytical investigation of loosening and shakedown of the threaded joints |
| Authors: | Leonavičius, Mindaugas
Krenevičius, Algimantas
Šukšta, Marijonas
Stupak, Stanislav
Bazaras, Žilvinas |
| Issue Date: | Oct-2006 |
| Publisher: | CSIR |
| IPC Code: | F16L
G01N3/00 |
| Abstract: | In a tight threaded joint subjected to cyclic
bending the regularities of crack formation and propagation possess specific
features compared to joints subjected to the cyclic tension. The investigation
results of tightening dependence on the number of cycles of threaded joints made
of various steels show that a fatigue crack forms and propagates, plastic
deformations develop or a structure element adapts oneself to a cyclic effect.
In threaded joints subjected to tension and cyclic bending there is a link
established between loosening and the fracturing process parameters such as the
configuration and depth of crack. Due to such non-elastic deformation dangerous
states may occur leading to deterioration of bolts. One of such states is
characterised by a progressing accumulation of deformations resulting in the
changes in the geometry of constructive elements. The approximate kinematic
theorem has been used for the estimation of the bolt shakedown parameters in
case of tension and bending. |
| Page(s): | 411-416 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.13(5) [October 2006]
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