DESENVOLVIMENTO DE APLICATIVO PARA CÁLCULO DE FREQUÊNCIA NATURAL E FORMA MODAL DE VIGAS

Abstract

The vibrations effects on structures, often neglected, can prove itself as a factor of great influence, both in the comfort of its occupants, and in dimensioning parameters. The study of natural frequencies is important when considering the effects of resonance suffered by the structures, which can lead to a decrease in the resistance and the lifespan of the building. Thus, the present work shows the development of an application for smartphones with Android® operating system, with the purpose of streamline and increase the reliability of natural frequency calculations and modal shapes of singlespan beams. Was made a bibliographical review with the objective of understanding and discussing vibration in structures, their effects, natural frequencies and modal shapes, also about the Java programming language, and Android Studio®, used for the development of applications to Android® mobile platform. Finally, with the application’s results, a verification procedure was performed for these data, based on a calculation model in Excel. Considering the results obtained from such comparison, the application's effectiveness is concluded, thus producing an agile and reliable method for a first check for dynamic requests.