MODELING OF SHEET METAL FORMING USING QUASI-ELASTIC MEDIA

Abstract

In this paper a review on simulations using FEM for sheet metal hydroforming is presented. Hydroforming can be done either with a punch and a pressurized fluid that replaces the die or by using fluid under pressure instead of the punch and with a die. The main types of sheet hydroforming techniques are: with fluid, either directly or with a rubber diaphragm; or with rubber, that can behave like a fluid under a high enough pressure. There are different variations of hydroforming, using different types of fluids with different properties. Some of these hydroforming methods have been simulated by different researchers, using different FEM software, like Dynaform, Abaqus, etc. The purpose of these FEM simulations is to obtain results that are close to the results obtained experimentally, to be able to compare them, which can be quite difficult, because of the fact that there are multiple parameters that can influence the results.