Pre-stressed bolted joints are widely used in civil structures and industries. The tightening
force of a bolt is crucial to the reliability of the joint connection. Loosening or over-tightening …

Threaded fasteners are one of the most commonly used connection methods for mechanical
structures. Its primary function is to generate appropriate clam** forces and fasten the …

The aim of this study is to provide an experimental methodology useful to determine the
friction coefficients in bolted joints and, therefore, to relate precisely the tightening torque to …

A new framework for modeling the dynamics of bolted structures is proposed that considers
the nonlinear interfacial modeling of bolted structures using multi-scale traction-based …

In this research, three types of lubricants are investigated for their effects on the friction and
torque-tension relationships in threaded fastener applications. Investigated lubricants …

Due to its strength advantage, high strength bolts are able to provide larger clam** force.
However, the changing behavior of friction coefficient during repeated tightening will …

The torque-tension relationship of threaded fasteners affects almost all engineering
disciplines. Tribological processes at fastener interfaces manifest as the system's friction …

In recent years, the need for lighter vehicles led to the widespread of lightweight alloys, such
as titanium, also in the field of threaded fasteners. Unluckily, the replacement of steel bolts …

An experimental procedure is proposed for studying the underhead and thread friction in
fasteners. The effective bearing friction radius, the underhead friction coefficient, and the …

An experimental study is presented in order to determine the clamp load loss due to elastic
interaction and gasket creep relaxation in bolted joints. Studied parameters include the …