Análise dinâmica através da caracterização experimental e numérica de uma estrutura esbelta

Abstract

Structures and mechanical systems, even if statically designed, are subject to dynamic loading. The forces generated by winds, the oscillatory movements caused by earthquakes, by the action of pedestrians and the rotary machines vibrations are examples of this. In this way, it is extremely important the systems dynamic response analysis in order to prevent discomforts, accidents, human and material losses. From this observation, was carried out the dynamic analysis of a two-floor structure on a vibratory platform subjected to a forced vibration. Using accelerometers, it was possible acquire experimental data, manipulating them in order to obtain the structure dynamic characterization. The objective of this work is to create a dynamic analysis methodology and characterize a slender structure. analysis as function of time and frequency from the signals picked up by the accelerometers. The acquired data allow the basis for comparison and refinement of a numerical analysis.