Semi-active dampers utilizing various working principles have been developed for a variety of vehicles. These semi-active dampers have been designed to resolve the ride and handling compromise associated with conventional passive dampers, and increase vehicle stability. This thesis briefly reviews existing semi-active damper designs, including but not limited to MR dampers, before presenting tw...

This paper deals with a dynamic Euler-Bernoulli beam of infinite length subjected to moving concentrated Dirac mass. The relies on foundation composed continuous distribution linear elastic springs associated in parallel uniform Coulomb friction elements and viscous dampers. problem is stated distributional form, the existence uniqueness results are established by means combination $ {\rm{ L}} ...

The application of control devices in coupled building system has been recently recognized as an effective alternative for seismic protection. In consideration of passive control approach, most of previous studies focused on application of fluid dampers, and the buildings in the coupled systems were in similar structural configuration. By recognizing the potential merits, such as simple in desi...

This article presents a theoretical study aimed at improving effectiveness of the isolation system of a building by adding magneto-rheological (MR) dampers that act in parallel to the rubber bearings (RB). To this end, the building itself is modeled with uni-axial elements that consider axial, shear and flexural deformations. Nonlinear elements that include RBs and MR dampers, whose response is...

The aim of this study is to investigate the performance isolated structures by considering possibility impact under severe earthquakes. In design structures, required displacement capacity determined based on considered earthquake hazard level. However, there a an caused moat walls or adjacent Dampers are used in improve structural and nonstructural components. regard, three (6, 9, 12 stories) ...

High cycle fatigue failure of turbine and compressor blades due to resonance in the operating frequency range is one of themain problems in the design of gas turbine engines. To suppress excessive vibrations in the blades and prevent high cycle fatigue, dry friction dampers are used by the enginemanufacturers. However, due to the nonlinear nature of friction contact, analysis of such systems be...

In the present study, friction damper, an energy dissipating passive device is explored to reduce response of open ground storey building under lateral loading due earthquake. This damper installed in selected bays so that reduced. The masonry infill wall macro-modeled form compression only diagonal members. Three different types bracing system were along with Pall – single tension brace cross ...