Abstract
Purpose: Numerical and experimental study was performed to evaluate the effect of peening temperature on the residual compressive stress distribution and magnitude of residual compressive stress at the material surface.
Methods: A compressive air-propelled warm peening equipment was designed and manufactured for warm peening test.
Results: 3D dynamic finite element (FE) model of the warm peening test was proposed and validity of the proposed FE model was verified by comparing the predicted residual stresses with the measured residual stresses in the open literature. Maximum warm peening temperature and a proper peening time were investigated with the proposed FE model.
Conclusion: Compressive residual stress increased remarkably with peening temperature increased. But, peening temperature is greater than 350℃, the effect of peening temperature disappeared. Therefore, maximum peening temperature possibly applicable for warm peening industry might be 350℃ and peening time is 45s.
Methods: A compressive air-propelled warm peening equipment was designed and manufactured for warm peening test.
Results: 3D dynamic finite element (FE) model of the warm peening test was proposed and validity of the proposed FE model was verified by comparing the predicted residual stresses with the measured residual stresses in the open literature. Maximum warm peening temperature and a proper peening time were investigated with the proposed FE model.
Conclusion: Compressive residual stress increased remarkably with peening temperature increased. But, peening temperature is greater than 350℃, the effect of peening temperature disappeared. Therefore, maximum peening temperature possibly applicable for warm peening industry might be 350℃ and peening time is 45s.
| Translated title of the contribution | Finite Element Analysis of Warm Peening Process on Spring Steel for Surface Durability Improvement |
|---|---|
| Original language | Korean |
| Pages (from-to) | 72-79 |
| Number of pages | 8 |
| Journal | 신뢰성 응용연구 |
| Volume | 18 |
| Issue number | 1 |
| DOIs | |
| State | Published - Mar 2018 |