Abstract
This paper presents an eigenstrain (misfit strain) model to predict the residual stresses (RS) generated by laser shock peening. The stresses generated in the workpiece due to propagation of the shock wave cause plastic deformation in the top layers of the specimen, and on relaxation the deformed material is loaded in compression by the surrounding undeformed material causing a RS field. In the present model the shock wave is first modelled as a dynamic pressure load in an explicit finite element (FE) model and the stabilised plastic strain distribution extracted from this analysis is incorporated as an eigenstrain distribution in a static FE model. The RS distribution generated by the original laser shock is obtained as the elastic response to the Eigenstrain.
| Original language | English |
|---|---|
| Publication status | Published - 6 Jun 2011 |
| Event | 11th International Conference on the Mechanical Behavior of Materials - Villa Erba, Como, Italy Duration: 5 Jun 2011 → 9 Jun 2011 |
Conference
| Conference | 11th International Conference on the Mechanical Behavior of Materials |
|---|---|
| Abbreviated title | ICM11 |
| Country/Territory | Italy |
| City | Como |
| Period | 5/06/11 → 9/06/11 |