Dynamique des structures

/Dynamique des structures

Recherche des sources de déformation et fissures dans une conduite de chaudière industrielle

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 [...]

Etude des variations de température dans les supports d’une chaudière industrielle

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 [...]

Conception du système d’isolation d’une plate-forme de sous-marin

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 des fréquences propres de bâtiments à grande hauteur

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 des principaux modes de vibration de cheminées industrielles

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. [...]