This paper discusses static and dynamic response of nanoplate resting on an orthotropic visco-Pasternak foundation based on Eringen’s nonlocal theory. Graphene sheet modeled as nanoplate which is assumed to be orthotropic and viscoelastic. By considering the Mindlin plate theory and viscoelastic Kelvin-Voigt model, equations of motion are derived using Hamilton’s principle which are then solved...

We propose practical analysis techniques to accurately measure geometric, dynamic, and material properties of MEMS. Analytical methods and test structures are presented to extract over a dozen properties by electric probing in a minimal chip area. Geometric properties include fabrication error with respect to layout geometry such as beam widths, gap spacings, etch holes, and beam lengths. Dynam...

Objective: Our goal was to develop a comprehensive measure of religious involvement for those affiliated with monotheistic religious traditions that fully captures the centrality of religion in life. Methods: A convenience sample of female caregivers of those with chronic disabling illness, recruited from North Carolina and California, completed a questionnaire including a new 10-item scale cal...

The strapdown fiber optic gyrocompass (strapdown FOGC) system for ships primarily works on external horizontal damping and undamping statuses. When there are large sea condition changes, the system will switch frequently between the external horizontal damping status and the undamping status. This means that the system is always in an adjustment status and influences the dynamic accuracy of the...

This study presents a novel auxiliary damping control strategy to depress subsynchronous resonance (SSR) oscillations in nearby turbine generators. In the proposed control strategy, SSR damping is achieved by adding turbine generator speed as a supplementary signal at the active power loop of the rotor-side converter (RSC) of doubly-fed induction generator (DFIG)-based wind farms. To design the...

Planetary surface vehicles (PSVs) play a critical role in space explorations. Flexible-wheel (FW) suspension concept has been regarded to be one of the novel technologies for future PSVs, where a few experimental studies have demonstrated its potential benefits in improving tractive performance of PSVs. This study develops generalized models for fundamental stiffness and damping properties and ...

Abstract Acoustic Black Holes (ABHs) are structural features that typically realised by introducing a tapering thickness profile into structure results in local regions of wave-speed reduction and corresponding enhancement the damping. In ideal theoretical case, where ABH tapers to zero thickness, reaches wave entering can be perfectly absorbed. practical realisations, however, taper thus remai...

In this paper, a novel compensator based on Magnetically Controlled Reactor with Fixed Capacitor banks (FC-MCR) is introduced and then power system stability in presence of this compensator is studied using an intelligent control method. The problem of robust FC-MCR-based damping controller design is formulated as a multi-objective optimization problem. The multi-objective problem is concocted ...