Influence of tightening bolt load and bolt load before test on slip resistance properties of inorganic zinc rich paint of friction type bolted joint

Abstract

The friction type bolted joints were designed by the number of bolts, the number of faying surfaces, bolt preload, and slip coefficient. However, some researchers report that the relaxation of bolt tension enhances the friction coefficient. Therefore, the slip resistance of friction type bolted joints should be influenced by these factors. In this study, tensile tests of friction type bolted joints were conducted to investigate the influence of the bolt load after tightening and before the test on the slip resistance. From obtained results, the slip resistance was increased by increasing the tightening bolt load. And the slip coefficient was increased by decreasing the bolt load before test.