Knowledge of effective slip strength is essential when a bolted joint is designed to work by friction. Axial load and friction coefficient are uncertain due to surface and bolt conditions. European standards indicate necessary tightening torque, but experimental torque-tension relationship is needed for many cases. Torque and axial load relaxation during time is also a common problem not so investigated. In this work, the friction coefficient and the effective slip strength are experimentally determined on a set of bolted joints operating on different surface conditions: prescriptions by standards demonstrate to be conservative not in all cases.
EXPERIMENTAL DETERMINATION OF THE FRICTION COEFFICIENT IN BOLTED JOINTS WITH DIFFERENT SURFACE CONDITIONS / Collini, Luca; Garziera, Rinaldo; Ferretti, Francesco. - CD-ROM. - (2015). (Intervento presentato al convegno CILAMCE 2015 – XXXVI Ibero-Latin American Congress on Computational Methods in Engineering tenutosi a Rio de Janeiro nel 22-25 Novembre 2015).
EXPERIMENTAL DETERMINATION OF THE FRICTION COEFFICIENT IN BOLTED JOINTS WITH DIFFERENT SURFACE CONDITIONS
COLLINI, Luca;GARZIERA, Rinaldo;
2015-01-01
Abstract
Knowledge of effective slip strength is essential when a bolted joint is designed to work by friction. Axial load and friction coefficient are uncertain due to surface and bolt conditions. European standards indicate necessary tightening torque, but experimental torque-tension relationship is needed for many cases. Torque and axial load relaxation during time is also a common problem not so investigated. In this work, the friction coefficient and the effective slip strength are experimentally determined on a set of bolted joints operating on different surface conditions: prescriptions by standards demonstrate to be conservative not in all cases.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
