Dynamics of Structures

/Dynamics of Structures

Structural analysis of a new lift tower to be built on Power Plant site

A new lift tower was to be designed and to be fixed to an existing stair case connected to a boiler's structure. Several three dimensional FEM models were developed for the lift tower’s sensitivity analysis using software package Robot™ Structural Analysis Professional 2013, by Autodesk®. The main differences between the models were the support conditions [...]

Dynamics of Structures|

Investigation on deformations

Investigation on sources of excessive deformation and cracking in inlet duct of a Waste Heat Recovery Boler Horizontal cracks on front face Cracks in the expansion joint flanges MODALYSE conducted a finite element method (FEM) based on stress and deformation analysis in order to understand the [...]

Thermal transfer in the support of a reactor

The purpose of this study was to evaluate the thermal transfer in the supports of an industrial reactor when the temperatures, inside and outside of the reactor, were imposed. The stresses involved by the temperature gradients were also evaluated besides the stresses due to the mechanical loads. The max principal stresses (crosses representing intensity and [...]

Design of isolation system for platform of submarine

The requirements for an isolation system of platform generally include : isolation of vibrations isolation of shock / survivability acoustic silence               The particular specifications may be : long dispalcement for an optimal response to shock a relatively low natural frequency to isolate the vibrations, even under high frequencies input [...]

Identification of natural frequencies of tower

Identification of natural frequencies of the spire and pendulum TMD of Samba Tower Riyadh 1 Introduction The purpose of the tests was the characterization of the main dynamic parameters of the spire at the top of the building in order to calibrate the Tuned Mass Damper (TMD) used to mitigate vibrations of the steel structure. The [...]

Identification of major vibrations of a tall chimney

The chimney located in Dunamenti, Hungary, was 102 m high and had a diameter of 5,6 m. It was mounted on a steel framed structure at a height of 35 m and had a 5-ton TMD mounted at the top. Measurements were conducted at the first level platform, at a height of 52 m. [...]