DOI QR코드

DOI QR Code

A Optimal 3D FE Model for Evaluation of Peening Residual Stress Under Angled Multi-impacts

다중경사충돌시 피닝잔류응력 평가를 위한 최적의 3차원 유한요소모델

  • Hyun, Hong-Chul (Dept. of Mechanical Engineering, Sogang Univ.) ;
  • Kim, Tae-Hyung (Gas Turbine Technology Service Center, KEPCO Plant Service & Engineering Co.) ;
  • Lee, Hyung-Yil (Dept. of Mechanical Engineering, Sogang Univ.)
  • 현홍철 (서강대학교 기계공학과) ;
  • 김태형 (한전 KPS(주) GT 정비기술센터) ;
  • 이형일 (서강대학교 기계공학과)
  • Received : 2010.10.26
  • Accepted : 2011.12.13
  • Published : 2012.02.01

Abstract

The FE model for shot peening often assume that shots impact vertically on the engineering parts to generate compressive residual stresses. However, the shots obliquely impact on the surface in actual peening. In this work, we propose a 3D finite element (FE) model for evaluation of residual stress under angled shot peening. Using the FE model for angled multi-impact, we examine the effects of factors such as impact angle, impact pattern and the number of shots. Plastic deformation of shot is also considered. To validate the model, we then compare the FE solution with experimental result by X-ray diffraction (XRD). The proposed model will be a base of 3D multi-impact FE model with diverse impact angles.

잔류응력 생성을 위한 대부분의 숏피닝 유한요소 해석모델은 숏볼이 재료표면에 수직으로 충돌하는 것을 가정한다. 하지만 실제 피닝공정에서 숏볼은 경사각을 갖고 재료표면에 충돌한다. 본 논문 에서는 잔류응력평가를 위한 3차원 경사충돌 유한요소 해석모델을 제안하였다. 다중경사충돌 유한요소 해석모델을 이용하여, 투사각, 충돌패턴, 숏볼수량 등 피닝인자들이 해석해에 미치는 영향을 조사하였다. 아울러 숏볼의 소성변형도 고려하였다. 유한요소해와 XRD 실험해의 비교를 통해 해석모델의 유효성을 검증했다. 본 논문에서 제안된 모델은 다양한 경사각에 대한 다중숏 충돌 유한요소 해석모델의 기초가될 것이다.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

References

  1. Carlsson, S. and Larsson, P. L., 2001, "On the Determination of Residual Stress and Strain Fields by Sharp Indentation Testing. Part I: Theoretical and Numerical Analysis," Acta Materialia, Vol. 49, pp. 2179-2191. https://doi.org/10.1016/S1359-6454(01)00122-7
  2. Suresh, S. and Giannakopoulos, A. E., 1998, "A New Method for Estimating Residual Stresses by Instrumented Sharp Indentation," Acta Materialia, Vol. 46, pp. 5755-5767. https://doi.org/10.1016/S1359-6454(98)00226-2
  3. Al Obaid, Y. F., 1990, "A Rudimentary Analysis of Improving Fatigue Life of Metals by Shot Peening," Journal of Applied Mechanics, Vol. 11, No. 2, pp. 307-312.
  4. Al-Hassani, S. T. S., 1981, "Mechanical Aspects of Residual Stress Development in Shot Peening," 1st International Conference on Shot Peening, pp. 583-602.
  5. Al-Obaid, Y. F., 1995, "Shot Peening Mechanics: Experimental and Theoretical Analysis," Mechanics of Materials, Vol. 19, pp. 251-260. https://doi.org/10.1016/0167-6636(94)00036-G
  6. Hills, D. A., Waterhouse, R. B. and Noble, B., 1983, "An Analysis of Shot Peening," Journal of Strain Analysis, Vol. 18, pp. 95-100.
  7. Schiffner, K. and Helling, C., 1999, "Simulation of Residual Stresses by Shot Peening," Computers & Structures, Vol. 72, pp. 329-340. https://doi.org/10.1016/S0045-7949(99)00012-7
  8. Han, K., Peric, D., Owen, D. R. J. and Yu, J., 2000, "A Combined Finite/Discrete Element Simulation of Shot Peening Processes Part II: 3D Interaction Laws," Engineering Computations, Vol. 17, No. 6, pp. 680-702. https://doi.org/10.1108/02644400010340615
  9. Meguid, S. A., Shagal, G. and Stranart, J. C., 2002, "3D FE Analysis of Peening of Strain-Rate Sensitive Materials using Multiple Impingement Model," International Journal of Impact Engineering, Vol. 27, pp. 119-134. https://doi.org/10.1016/S0734-743X(01)00043-4
  10. Majzoobi, G. H., Azizi, R. and Alavi N. A., 2005, "A Three-Dimensional Simulation of Shot peening Process using Multiple Shot Impacts," Journal of Materials Processing Technology, Vol. 164-165, pp. 1226 - 1234. https://doi.org/10.1016/j.jmatprotec.2005.02.139
  11. Kim, T. Lee, H., Hyun H. C. and Jung S., 2011, "A Simple but Effective FE Model with Plastic Shot for Evaluation of Peening Residual Stress and Its Experimental Validation," Material Science and Engineering A, Vol. 528, No. 18, pp. 5945-5954. https://doi.org/10.1016/j.msea.2011.04.012
  12. Kim, T. and Lee, H., 2008, "A 3D FEA Model with Plastic Shots for Evaluation of Peening Residual Stress due to Multi-Impacts," KSME (A), Vol. 32, No. 8, pp. 642-653.
  13. Bagherifard, S., Ghelichi, R. and Guagliano, M., 2010, "A Numerical Model of Severe Shot Peening (SSP) to Predict the Generation of a Nanostructured Surface Layer of Material," Surface & Coatings Technology, Vol. 204, pp. 4081-4090. https://doi.org/10.1016/j.surfcoat.2010.05.035
  14. Kim, T. W., Yang, Z. R., Ha, D. H. and Lee Y., 2011, "Effect of Strain Rate and Material Hardness on Residual Stress in Multiple Impact Shot Peening," KSME(A), Vol. 35, No. 11, pp. 1369-1375.
  15. Hassani-Gangaraj, S. M., Guagliano, M. and Farrahi, G. H., 2011, "Finite Element Simulation of Shot Peening Coverage with the Special Attention on Surface Nanocrystallization," Procedia Engineering, Vol. 10, pp. 2464-2471. https://doi.org/10.1016/j.proeng.2011.04.406
  16. Kim, T. J., Kim, N. S., Park, S. C. and Jeong, W. W., 2002, " Finite Element Analysis of Shot Peening Effected by Multiple Impacts," KSME (A), Vol. 26, No. 12, pp. 2656-2661.
  17. Kim, T., Lee, J. H., Lee, H. and Cheong, S. K., 2010, "An Area-averaged Approach to Peening Residual Stress Under Multi-impacts Using a Three-Dimensional Symmetry-cell Finite Element Model with Plastic Shots," Materials & Design, Vol. 31, pp. 50-59. https://doi.org/10.1016/j.matdes.2009.07.032
  18. Baek, S., Yang, W. H., Seok, C. S. and Ryu, M. H., 2003, "Residual Stress Analysis of Inclined Shot Peening Using Finite Element Method," KSME (A) Spring Annual Meeting, pp. 328-333.
  19. Miao, H. Y., Larose, S., Perron, C. and Levesque, M., 2009, "On the Potential Applications of a 3D Random Finite Element Model for the Simulation of Shot Peening," Advances in Engineering Software, Vol. 40, pp. 1023-1038.
  20. Hong, T., Ooi, J. Y. and Shaw, B., 2008a, "A Numerical Simulation to Relate the Shot Peening Parameters to the Induced Residual Stresses," Engineering Failure Analysis, Vol. 15, No. 8, pp. 1097-1110.
  21. Hong, T., Ooi, J. Y. and Shaw, B., 2008b, "A Numerical Study of the Residual Stress Pattern from Single Shot Impacting on a Metallic Component," Advances in Engineering Software, Vol. 39, pp. 743 - 756. https://doi.org/10.1016/j.advengsoft.2007.10.002
  22. ABAQUS User's Manual, 2006, Ver. 6.7, Hibbitt, Karlsson and Sorensen, Inc., Pawtucket, RI.
  23. Torres M.A.S. and Voorwald H.J.C., 2002, "An Evaluation of Shot Peening, Residual Stress and Stress Relaxation on the Fatigue Life of AISI 4340 Steel," International Journal of Fatigue, Vol. 24, pp. 877-886. https://doi.org/10.1016/S0142-1123(01)00205-5
  24. Lee, B., Kim, T. and Lee, H., 2010, "3D FE Model with FEA Factors and Plastic Shots for Residual Stress Under Oblique Shot Peening," KSME(A), Vol. 34, No. 3, pp. 323-331.
  25. Menig R. M., Pintschovius L., Schulze V. and Vohringer O., 2001, "Depth Profiles of Macro Residual Stress in Thin Shot Peened Plates Determined by X-ray and Neutron Diffraction, " Scripta Materialia, Vol. 45, pp. 977-983. https://doi.org/10.1016/S1359-6462(01)01063-6
  26. Chung S. J. and Back S. D., 1998, "Effect of Shot Peening on Fatigue Properties in Spring Steel," KSME (A), Vol. 22, No. 6, pp. 1009-1015.