| YAN Xi-chao 1 ， ZHANG Hong-wei 2 ， CHEN Tao 2 ， CHANG Jie 3.DEM-FEM Coupled Simulation Analysis of Titanium Alloy Ultrasonic Shot Peening[J].航空发动机,2024,50(6):161-167 |
| DEM-FEM Coupled Simulation Analysis of Titanium Alloy Ultrasonic Shot Peening |
| DOI： |
| Key Words:ultrasonic shot peening TC4 alloy residual stress surface coverage coupled DEM-FEM aeroengine |
|
| Hits: 14 |
| Download times: 8 |
| Abstract:To investigate the influence of ultrasonic shot peening process parameters on the residual stress field and surface coverage
of TC4 alloy, a coupled discrete element method and finite element method (DEM-FEM) 3D simulation model was developed using com?
mercial software. The study focused on the effects of process parameters (amplitude and shot diameter) on the residual stress field of TC4
alloy. Surface coverage of the workpiece was evaluated using two methods: node PEEQ method and image analysis, to study the influence of
amplitude on surface coverage. Results indicated that with the increase of amplitude and shot diameter, characteristic parameters of the
residual stress field increase. Surface residual compressive stress and maximum residual compressive stress amplitude reached -691.83
MPa and -1047.97 MPa respectively, with a residual stress depth up to 0.61 mm. As the amplitude increases, surface coverage gradually
increases by approximately 5%. Compared with the node PEEQ and image analysis method, the coupled DEM-FEM simulation method can
quickly obtain surface coverage following ultrasonic shot peening. |
| View Full Text View/Add Comment Download reader |
