Stabilization of the system of wave equations coupled in parallel with coupling distributed springs and viscous dampers are under investigation due to different boundary conditions and wave propagation speeds. Numerical computations are attempted to confirm the theoretical results. 2000 Mathematics Subject Classification. 58J45, 93D15, 93D20, 37D99, 35L05.

Building Heating, Ventilation and Air Conditioning (HVAC) system maintain comfortable indoor environment by supplying processed air to each terminal precisely through duct system. Testing, Adjusting and Balancing (TAB) plays critical role in achieving desired air distribution. Traditional TAB method is inaccurate and inefficient due to its trailand-error natural, which forces people to pay high...

The fractional order systems has been used successfully to model in frequency domain the development of induced currents in electric machines, especially in the dampers or massive parts of large synchronous machines. The objective of this work consists in extending the field of application of fractional order models for small signal stability studies of an electrical network.

Although concentrically braced frame (CBF) systems enjoy high elastic stiffness and lateral strength, they show a low seismic energy absorption capacity. This dilemma is due to the buckling of CBFs’ diagonal members under compressive loading. To overcome shortcoming, researchers have proposed use dampers improve behavior CBF systems. Among dampers, metallic shear damper most popular thanks its ...

While damping devices can provide supplemental to mitigate building vibration due wind or earthquake effects, integrating them into the design is more complex. For example, Canadian code does not designs with inline friction dampers. The objective of this present article was study overstrength, ductility, and response modification factors concrete frame buildings dampers in context. that purpos...

E ectiveness of a new semiactive independently variable sti ness (SAIVS) device in reducing seismic response of sliding base isolated buildings is evaluated analytically and experimentally. Through analytical and experimental study of force—displacement behaviour of the SAIVS device, it is shown that the device can vary sti ness continuously and smoothly between minimum and maximum sti ness. Pa...

We report on the design of high order mode (HOM) couplers developed for superconducting (SC) 3 harmonic cavities carried out in the framework of the SUPER 3HC project. The high damping requirements for both longitudinal and transverse modes can be achieved with the appropriate HOM dampers. The results of measurements on a copper model as well as simulations are presented.

Particle damping is a type of impact damping that is designed to mitigate the response of lightly damped structures under dynamic loading. It consists of granular materials constrained to move between two ends of a cavity in a structure. When attached to a vibrating structure, the collisions of individual particles with cavity boundaries result in a reduction in the vibration amplitude of the s...

A method for training patterns validation for modelling MR damper is proposed. The method was validated with two models based on black-box and semi-phenomenological approaches. An input pattern that allows a better identification of the MR damper model was found. Including a frequency modulated displacement and increased clock period in the training pattern, the MR damper model fitting is impro...