Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지
DOI QR코드

DOI QR Code

Verification of Finite Element Model Using the Almen Strip Test and Its Applications to Calculate Residual Stress Distribution

알멘 스트립 시험 모사를 이용한 유한요소모델의 유효성 검증 및 잔류응력분포 계산

  • 양조예 (중앙대학교 기계공학부 대학원) ;
  • 박성호 (중앙대학교 기계공학부 대학원) ;
  • 이영석 (중앙대학교 기계공학부)
  • Received : 2011.10.26
  • Accepted : 2012.04.17
  • Published : 2012.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

We performed a shot peening test and used a 2-D finite element model which predicts the compressive residual stress distribution below the material's surface. In this study, the concept of 'impact cycle' is introduced to account for the irregularity in the shot's impact position during testing. The impact cycle was imbedded in the finite element model. In the shot peening test, shot bombarded a type-A Almen strip surface with different impact velocities. To verify the proposed finite element model, we compared the deformed cross sectional shape of the Almen strips with the shapes computed by the proposed finite element model. Good agreement was noted between measurements and the finite element model predictions. With the verified finite element model, a series of finite element simulations was conducted to compute the residual stress distribution below the material's surface and the characteristics of these distributions are discussed.

Keywords

References

  1. S. A. Meguid, G. Shagal, J. C. Stranart, 1999, Finite Element Modeling of Shot-peening Residual Stresses, J. Mater. Process. Technol., Vol. 92, No. 93 , pp. 401-404. https://doi.org/10.1016/S0924-0136(99)00153-3
  2. T. Hong , J. Y. Ooi, B. A. Shaw, 2008, A Numerical Study of the Residual Stress Pattern from Single Shot Impacting on a Metallic Component, Adv. Eng. Software, Vol. 39, No. 9, pp.743-756. https://doi.org/10.1016/j.advengsoft.2007.10.002
  3. T. H. Kim, 2008, A 2D FE Model for Unique Solution of Peening Residual Stress in Single Shot Impact, Trans. Kor. Soc. Mech. Eng. A, Vol. 38, No. 4, pp. 362-370.
  4. S. A. Meguid, G. Shagal, J. C. Stranart, 2002, 3D FE Analysis of Peening of Strain-Rate Sensitive Materials using Multiple Impingement Model, Int. J. Impact Eng., Vol. 27, No. 2, pp.119-134. https://doi.org/10.1016/S0734-743X(01)00043-4
  5. K. Schiffner, C. Droste gen. Helling, 1999, Simulation of Residual Stresses by Shot Peening, Comput. Struct., Vol. 72, No.1-3, pp. 329-340. https://doi.org/10.1016/S0045-7949(99)00012-7
  6. G. H. Majzoobi, R. Azizi, A. Alavi Nia, 2005, A Three-Dimensional Simulation of Shot Peening Process using Multiple Shot Impacts, J. Mater. Process. Technol., Vol. 164-165, pp.1226-1234. https://doi.org/10.1016/j.jmatprotec.2005.02.139
  7. M. Klemenz, V. Schulze, I. Rohr, D. Lohe, 2009, Application of the FEM for the Predition of the Surface Layer Characteristics after Shot Peening, J. Mater. Process. Technol., Vol. 209, No.8, pp. 4093-4012. https://doi.org/10.1016/j.jmatprotec.2008.10.001
  8. M. Guagliano, 2001, Relating Almen Intensity to Residual Stresses Induced by Shot Peening: Anumerical Approach, J. Mater. Process. Technol., Vol. 110, No. 3, pp. 277-286. https://doi.org/10.1016/S0924-0136(00)00893-1
  9. S. Baek, W. Yang, C. S. Seok, M. H. Ryu, 2003, Proc. KSME Spring Annual Meeting(K. Y. Lee), Kor. Soc. Mech. Eng., Seoul, Korea, pp. 328-333.
  10. T. H. Kim, J. H. Lee, H. Y. Lee, S. K. Cheong, 2010, An Area-Average Approach to Peening Residual Stress Under Multi-Impacts using a Three-Dimensional Symmetry-Cell Finite Element Model with Plastic Shots, Mater. Des., Vol. 31, No. 1, pp. 50-59. https://doi.org/10.1016/j.matdes.2009.07.032
  11. SAE J442, 2004, Test Strip, Holder and Gage for Shot Peening, Society of Automotive Engineers, Inc. USA.
  12. B. Baskaran, 2011, Numerical Simulation of Almen Strip Response Due to Random Impacts with Strain-Rate Effects, Int. J. Mech. Sci., Vol. 53, pp. 417-424. https://doi.org/10.1016/j.ijmecsci.2011.03.004