Síntese e análise de mecanismos flexíveis

Abstract

When it comes to mechanisms, recent advancements in the field of engineering materials and the continuous drive to simplify production have led to the current interest in compliant mechanisms. These mechanisms have some advantages over traditional ones, such as: reduced number of components, easy assembly, lower costs, potential elimination of backlash, friction and wear. Considering these advantages, the present paper details the synthesis and analysis process of a compliant mechanism able to substitute an existing rigid mechanism. To do so, the authors use the Pseudo-Rigid Body Model (PRBM), which allows modelling a compliant mechanism like a rigid mechanism with torsion springs in its joints, simplifying the process. Then, the starting rigid mechanism, the developed pseudo-rigid model and the synthesized compliant mechanism are analyzed and compared through simulations in the finite elements software, Abaqus. This comparison seeks to validate the methodology used and to guarantee the compliant mechanism`s functionality. Lastly, the results are discussed by the author.