Multistage forming analysis of spoke resonator end-wall

Abstract

Spoke resonator components are typically formed by sheet metal forming operations such as deep drawing and bending. End wall, Spoke and Shell are the main components of spoke resonators. A sheet metal blank of niobium material is used to form the End wall and Spoke for a spoke resonator. This paper presents an elasto-plastic finite element analysis for single stage and multi stage forming of spoke resonator End wall. Numerical simulations were performed to investigate the effect of forming process parameters on localized thinning, residual stresses and study of failure such as tearing or wrinkling. Forming tools like die, punch and binder were modeled by UGNX 8.0, a modeling software and finite element analysis of forming has been simulated by Altair HYPERFORM software. The results of the analysis were used to assess the various forming process. The analysis showed that the multistage forming leads to better uniformity in thickness of component. This data will help in selection of appropriate forming process.