Simulação da aplicação de um compósito polimérico reforçado com fibra de licuri (syagrus coronata) em estruturas de cadeiras de rodas

Abstract

The study of composite through computational simulation has been an interesting alternative because of the emphasis this material is receiving lately.There is a huge industry interest in the optimization of reliable models of enough materials to use in prototips and virtually explore an infinity of possibilities of compositions and answers to the mechanical demands. The computational modeling suitable for the manual wheelchair (CRM) in these conditions can help in the planning of the final composition of the composite, once it is possible to evaluate the influence of concentration and orientation of certain constituents in the global behavior of this. The goal of the present research is to study the viability of the Poliéster Orto-Tereftálico Reforçado com Fibra de Licuri (PORFL) application in the wheelchair structure.Two materials were submitted to computational simulation, the polymer and the steel (composite matrix) were simulated for three CRM models, the goal was to select only one model for the simulation considering the PORFL. Those CRM were submitted to 2450N, to know how they would behave in relation to the Von Mises stress ( The charge is delivered for the structure of the wheelchair) and the deflection strain( behavior in deformation through applied charge). The CRM selected model is determined by the amount of people who have access to this equipment and also by the developed high tension, which is of 105,29MPa to the model 1. The results are satisfactory for the PORFL, because when the CRM structure optimization is considered, the developed tension value decreased from 104,86MPa (real model) to 3,0MPa (optimized model). The deflection strain was reduced from 8,82mm (real model) to 0,30mm (optimized model). So It's considered that this material can be used in the fabrication of CRM structures. Also, there is the possibility of new studies for the application.