Springback in sheet metal forming of stainless steel 410

This paper considers the use of finite element simulation of sheet metal forming as a tool to evaluate geometrical defects caused by elastic springback. The simulations aim to provide reliable information about the deviation of the real part geometry from that defined in the design phase in order to overcome the subsequent assembly problems. The material studied and presented in this paper is stainless steel 410. In order to determine the material properties and the parameters needed for the simulations, a series of experiments including uniaxial and cyclic tests were carried out. Moreover, bending experiments were conducted so that simulation results can be verified against simple forming operations. To expand the use of the model to predict the effect of forming parameters on springback, an aircraft engine cone-shaped component was simulated and the results were compared to the actual formed part. Predictions of the final shape and thickness variation were successfully obtained and were in agreement with the cone forming experiments.