The main goal of this research is to analyse the effect of angular velocity on stability and vibration of a simply supported Rayleigh rotating shaft. To this end, non-dimensional kinetic and potential energies are written while lateral vibration is considered. Finite element method is employed to discrete the formulations and Linear method is applied to analyse instability threshold of a rotati...

Structural health monitoring (SHM) provides an opportunity to assess and predict changes in the technical condition of structures during operation a building. damage, as well several operational environmental conditions, causes modal parameters. Temperature is most popular which used for research. However, authors’ knowledge, this first investigation that highlights effect groundwater level cha...

Abstract The functionally graded plates (FGP) with two new porosity distributions are examined in this paper. In work the plate is modeled using higher-order shear deformation principle. correction variables neglected. To evaluate equations of motion, Hamilton method will be used herein. Therefore, free vibration analysis FG developed work. For porous smart simply-supported sides, natural frequ...