Otimização topológica de mecanismo de quatro barras

Abstract

Many mechanisms are designed without an optimization strategy, resulting in mechanical parts with excessive consumption of raw materials to be manufactured, which is one of the most common cases of over dimensioning. Developing and applying a structural optimization method, it is possible to reduce the load on the bars, which not only vary with the outside load applied, but are directly related to the inertial forces caused, proportionally, by its masses. The method consists in applying loads to a four bar mechanism in order to analyze the stresses in the bars and optimize the bars’ topologies in their critical positions making use of ANSYS’s tools. This process has the objective of eliminating excessive material and redistributing the essential in an optimized manner. After an optimized topology has been determined, new stress analyses are performed to validate the results and to verify that the optimized mechanism can bear the applied load.