Análise dinâmica de mecanismos planares de quatro barras com auxílio de ferramenta CAE

Abstract

The general study of mechanisms is usually limited to the kinematics area, i.e., the study of the movement of these components. When the project involves unknown forces but known to be of low intensity, and there is not a concern about sizing of links, the kinematic analysis is sufficient. However, for applications with forces of greater intensity and more efficient designs, it is necessary to make a deeper analysis of the mechanism for the calculation of forces. Making use of Matlab, that was proposed to carry out all stages of kinematic and kinetic analysis in a case study for four-bar linkages, the objective was to develop a more complete analysis methodology for this type of study. This methodology was also validated by reproducing the problem in a numerical model for a CAE analysis, aiming to work later with mechanisms of more complex geometries. Since this methodology has been proven as reliable, a numerical model for a mechanical application of a planar four-bar mechanism was developed in order to obtain results of parameters such as acceleration, forces and stresses acting on the system. At the end of the study, it can be considered as the main conclusions not only the high reliability shown by the developed methodology but also the applicability of it in everyday problems, thus presenting great practicality and efficiency in obtaining more complete analysis even for more complex projects.