Simulation des Kugelstrahlens zur prozessbasierten Bauteilauslegung

Translated title of the contribution: Numerical simulation of shot peening for process-based component design

Marcel Messner

Research output: ThesisDiploma Thesis


The service life of cyclic loaded engineering components is significantly affected by the residual stresses in the boundary layer. The residual stress distribution can be adjusted through surface treatments like shot peening. To calculate the effects caused through shot peening it is necessary to create a numerical simulation of the shot peening process. Due to economical and technical reasons a virtual shot peening simulation on complex components is unreasonable; hence, an alternative procedure on a simple geometry is presented and the results are assigned to arbitrary industrial components. The aim of this diploma thesis is to create a simulation of the shot peening process including the residual stress, the hardening (back and drag stress) and the plastic strain in relation to the penetration depth To achieve these goals, a simplified specimen geometry was generated and shot peened with various parameters in consideration of the overlap. The results like the residual stress, the strain hardening and the plastic strain as well as the deformation of the surface (roughness) are evaluated and noticeable trends are discussed. The parametric studies include a variation of size and velocity of the individual shots as well as the variation of the friction coefficient between the shot and surface. The higher the size and the impact velocity of the shots, the higher the absolute value of residual stresses and hardenings as well as the penetration depth. Analogue to that, the depth of the transition point from compressive to tensile residual stress increases as well. Moreover, an automated routine assigning the shot peening induced stresses and hardening to any engineering component is provided. Additionally, it is possible to assign different residual stress and hardening distributions to specifically defined regions in the FE-model. The developed routines allow an automated generation and evaluation of the shot peening simulation as well as the transfer of these results to arbitrary shaped engineering components. This procedure enables an economical and user-friendly consideration of the surface layer condition already during the design stage of components.
Translated title of the contributionNumerical simulation of shot peening for process-based component design
Original languageGerman
  • Stoschka, Michael, Supervisor (internal)
Award date1 Jul 2016
Publication statusPublished - 2016

Bibliographical note

embargoed until 09-05-2021


  • shot peening
  • residual stresses
  • hardening
  • numerical simulation
  • finite element method

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