Ref.: MpoMcc28-001
Apresentador: Luis Fellipe Lopez de Carvalho
Autores (Instituição): de Carvalho, L.L.(Centro Universitário SENAI CIMATEC); Shigueoka, M.O.(Centro Universitário SENAI CIMATEC); Beal, V.E.(Centro Universitário SENAI CIMATEC); Soares, L.F.(Faculdade de Tecnologia SENAI CIMATEC);
Resumo:
The main objective of this study was to assess the application of additive manufacturing (AM) binder jetting powder bed fusion (BJ-PBF) technology for creating compliant mechanisms using thermoplastic materials. The research progressed through distinct stages: three-dimensional (3D) modeling, computational simulation, fabrication, and testing. Initially, a literature review was conducted to identify designs capable of withstanding substantial elastic deformations. The study's development process centered on selecting and modifying a spring geometry found in the references. The chosen spring geometry underwent numerical simulations, was printed in polyamide-12 using BJ-PBF, and was physically tested to evaluate its performance as a compliant mechanism. The results indicate that the choice of thickness to be printed significantly influences the final thickness obtained, along with the execution of post-processing for the unfused powder. Accumulation of non-fused powder in hardly accessible regions adversely impacted the mechanical properties of the part. Concerning computer simulations, further investigation is required, as the obtained values differed from the experimental results.