Evaluation of stress and strain field of a thin sheet during the incremental sheet forming process
Alysson Vieira1; Márcio Silveira2; Jánes Junior3; Yukio Shigaki4; Débora Lalo5
1 Pontifícia Universidade Católica - MG; 2 Universidade Federal de São João Del Rey; 3 Pontifícia Universidade Católica; 4 Cefet - MG; 5 Smarttech Tecnologia
doi:10.20906/CPS/CILAMCE2015-0198
Resumo
The industry has been looking for tools that enable the reduction of costs in the product creation stages. In the sheet metal forming industry, the stamping is a process widely used for large scale production, however a high investment in heavy punches and dies is required. Being a relatively old process within the engineering, the study of its forming is well established. Recently, in order to reduce the use of dies and punches, it has been developed a sheet forming method known as Incremental Forming. It is a slow process compared to convencional method. Currently, its usage is focused on the production of small scales and prototypes. This work presents a study of the stress and strain fields of a thin sheet of steel during the process of Incremental Forming, using the Finites Flements Method. The results showed that, unlike conventional stamping, the plane stress state does not prevail during the plastic forming process, which suggests new elements for a better correlation.
Palavras-chave: Stress; Strain; FEM; ISF