Finite Element Simulation of Shot Peening on Spring Steel Wire

Author:  U. Kletzin
Source:  Conf Proc 2014: ICSP-12 Goslar, Germany (pgs.324-329)
Doc ID:  2014097
Year of Publication:  2014
Abstract:  
Shot peening is a standard procedure for increasing the durability of dynamically loaded helical springs. The dependences of the residual stress profile from the parameters of the shot peening process are difficult to determine. The article will describe new developed special program tools for Finite Element simulation of shot peening on spring steel wire to calculate the residual stress profile, e.g. in helical springs, which is highly necessary for fatigue estimations. The interaction between the parameters such as particle dimensions, particle velocity as well as the materials of particles and spring and the expected residual stress profile will be discussed. The article describes a FEA-simulation of the stepwise etching and measuring process of the residual stress profile and a discussion. The program tools are integrated in a Finite-Element-Springprocessor (FE-Springprocessor) developed by the author. A new time saving method of the design process of dynamically loaded helical compression springs based on the results of the residual stress profile calculation will be demonstrated.