The identification of nonlinearities that have a significant impact on dynamic behaviour complex mechanical structures is necessary for ensuring structural efficiency and safety. A new methodology nonlinear assemblies proposed in this paper enables the discovery stiffness damping models especially when it not possible to directly measure degrees freedom where non-trivial are located. Input-outp...

The fatigue behavior of bolted joints is critical to failure for many applications due the high notch effect. Among other parameters, lifetime based on influence surface system, consisting corrosion protection and lubricant. With intention considering system in design dimensioning process joints, experimental investigations are carried out systematically an exemplary selected basecoat various l...

Bolted connections are widely used in the machine tool manufacturing and equipment. As it is well known, bolt preload will be attenuated by vibration of tools, which degenerate working life tools. In this paper, a new experimental design method introduced into study on attenuation: quadratic general rotary unitized design. The dynamic analysis bolted connection carried out based finely fragment...

Hydrogen gas has been widely recognized as an environmentally clean and renewable energy fuel, and it provides a way to reduce greenhouse gas and air pollution emission. A great deal of effort has been made to develop new techniques in the field of hydrogen energy, including hydrogen production, storage, and infrastructure. Recently a metallic gasket, which is made of type 316L stainless steel,...

An aerospace structure is built from the assembly of structural sub-components involving joining technologies such as welding, mechanical fastening or adhesive bonding. The function joints to ensure load transfer between sub-components. integrity directly depends on strength these joints. In order design critical areas, must be assessed. objective this review paper present approaches for simpli...

In order to study the mechanical properties of ZT7G/LT-03A carbon fiber reinforced composite bolted joints, single-bolt double-lap joints tests were carried out with 3 kinds ply and width, effects different ratios, width diameter ratios on failure load mode analyzed. Then, process specimens was simulated by using progressive damage analysis method. The model are consistent that specimen, which ...

This research paper presents a novel structural health monitoring strategy based on hybrid machine learning and finite element model updating method for the of bolted connections in steel planer frame structures using vibration data. Towards this, support vector is trained with discriminative features obtained from time history data, those are used to distinguish between damaged undamaged joint...