Prediction of Residual Stress States after modified Shot Peening Treatments using Strain-Rate and Temperature-dependent Material Data

Within the EU-project “LEAFSLIM”, the application of modified stress peening treatments to leaf springs for heavy truck applications has been investigated. Part of the project was the development of an adequate Finite Element (FE)-simulation model. Using strain-rate and temperature dependent material data, the predictability of residual stresses after conventional, warm, stress, warm stress and double peening was assessed. Both impact analyses and process-oriented simulations were carried out. The simulation framework shows a good reproducibility of experimentally measured residual stress states and tendencies regarding pre-stress and temperature