purpose– analysis of non-prismatic beams has been focused of attention due to wide use in complex structures such as aircraft, turbine blades and space vehicles. apart from aesthetic aspect, optimization of strength and weight is achieved in use of this type of structures. the purpose of this paper is to present new shape functions, namely 3-node basic displacement functions (bdfs) for derivati...

The structural control can provide the potential protection through passive and active control techniques. Structures with base isolations have been successfully implemented and proven effective in the vibration mitigation. To enhance the functionality of base isolations, a hybrid control system can be considered using a combination with active control devices. This research applies the hybrid ...

The aim of this paper is to assess the effectiveness nonlinear viscoelastic damping in controlling base-excited vibrations. Specifically, focus on investigating robustness base isolation performance system response due a wide set possible excitation spectra. dynamic model derived study simple structure whose provided via Rubber-Layer Roller Bearing (RLRB) (rigid cylinders rolling rigid plates w...

The need to design blast resistant civilian structures has arisen due to aggressor attacks on many civilian structures around the world. Achieving vibration and wave attenuation with locally resonant metamaterials has attracted a great deal of consideration due to their frequency dependent negative effective mass density. In this paper, metaconcrete, a new material with exceptional properties i...

Vibration dampers are installed on the machine foundations in order to reduce vibration level. Such technological solutions most expedient case of a harmonic load with low instability frequency. Unfortunately, do not provide such large reduction dynamic effect base, as isolation, but some cases their efficiency turns out be quite sufficient relatively simple implementation and manufacturing cos...

This paper presents a smart passive MR damper with fast-responsive characteristics for impact mitigation. The hybrid powering system of the damper, composed batteries and self-powering component, enables damping to be negatively proportional velocity, which is called rate-dependent softening effect. effect can keep force as maximum allowable constant under different speed thus improve efficienc...