Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Development of a Topology Optimization Method for Tailored Forming Multi-material Design
Submission Author:
Renan da Silva de Siqueira , Niedersachsen , Brazil
Co-Authors:
Roland Lachmayer, Iryna Mozgova, Renan da Silva de Siqueira
Presenter: Renan da Silva de Siqueira
doi://10.26678/ABCM.COBEM2017.COB17-0079
Abstract
With new technologies for manufacturing of mechanical parts, new design approaches must be developed to attend specific requirements. Tailored Forming is a process chain with the objective of creating hybrid solid components by using semi-finished work-pieces. This opens a vast range of possibilities for mechanical design, as well as lighter or load-adjusted components, or different material properties in different regions. Thus, one of main concerns in this new methodology is on how the joining zone between the two metals should be designed, since it brings an infinite number of possibilities. With the objective of finding the optimal shapes, topology optimization methods have been widely investigated in last decades. Furthermore, multi-material methods have been proposed, but mostly with too generic approaches, bringing difficulties for its practical use. Another point of concern is about the objective function, where most of these studies have been focused only on compliance minimization. For that reason, the aim of this study is the evaluation of different methods and techniques that can be used in Tailored Forming design. Then, a new method called here Interfacial Zone Evolutionary Optimization (IZEO) is proposed, where the design update happens only at the joining surface. Its main implementation points consist in a material exchange rule and steps of shape adjustment. As result, the algorithm written was able to generate satisfactory results and will be an advantageous approach for dealing with manufacturing constraints.
Keywords
tailored forming, Topology optimization, multi-materials, Lightweight structures
