the static pull-in instability of beam-type micro-electromechanical systems is theoretically investigated. two engineering cases including cantilever and double cantilever micro-beam are considered. considering the mid-plane stretching as the source of the nonlinearity in the beam behavior, a nonlinear size-dependent euler-bernoulli beam model is used based on a modified couple stress theory, c...

Resumo: O presente artigo explora o uso do conceito de transparência em processos de negócio (BPM). Demonstra-se, através de um exemplo, como um processo de negócio pode tornar-se mais transparente e como a teoria de aspectos ajuda a modularizar o modelo do processo. Particularmente, ajudamos a comprovar a eficácia de aspectos na operacionalização de requisitos de clareza e simplicidade. O arti...

Terahertz (THz) communication is considered as an attractive way to overcome the bandwidth bottleneck and satisfy ever-increasing capacity demand in future. Due high directivity propagation loss of THz waves, a massive MIMO system using beamforming envisioned promising technology realize high-gain directional transmission. However, pilots, which are fundamentals for many schemes, challenging be...

This article presents Navier type closed-form solutions for static bending, elastic buckling and free vibration analysis of symmetric functionally graded (FG) sandwich beams using a hyperbolic shear deformation theory. The beam has FG skins and isotropic core. Material properties of FG skins are varied through the thickness according to the power law distribution. The present theory accounts fo...

Analysis of a laminated composite beam under impact by a rigid particle is investigated. The importance of this project is to simulate the impact of objects on small scale aerial structures. The stresses are considered uni- axial bending with no torsion loading. The first order shear deformation theory is used to simulate the beam. After obtaining kinematic and potential energy for a laminated ...