DOI QR코드

DOI QR Code

A Fatigue Behavior for Spot Welded Steel Plate Carbon C by the Variation of the Interval Between Two Spots

냉간압연강판 접용접재의 너깃간의 거리에 따른 피로거동

  • Published : 2000.11.01

Abstract

When welding a car frame with one spot welding there are same limitations because many parts of it cannot be simplified by one spot welding alone. It is presented two spot welding model for the description of the spot welding which is usually used in a car frame structure. This study primarily covers fatigue behavior taking spot welded SPCC(Steel plate carbon C) with different ungget intervals as a tension shear specimen. It was prepared that intervals between two nuggets are varied as 9mm, 14mm, and 20mm respectively. The tensile tests and fatigue tests were executed to know the mechanical properties under static and fatigue load condition. In addition, the relationship between fatigue life and nugget intervals was illustrated by finite element method.

Keywords

Fatigue Life;Two Spot Welding;Interval Between Two Spots;Von Mises Stress;Crack Tip Opening Angle

References

  1. Michio Ogawa and Mamoru Sakurada, 1996, 'Design Evaluation of Fatigue Life Prediction of Spot Weldings Using CAE Analysis,' 日野技術, No. 49, pp. 10-17
  2. Tanuma, K. and Hashimoto, T., 1979, 'Static Fracture Appearance of spot welded Joints of Cold Rolled Carbon Steel Sheets,' Trans. of National Research for Metals, Vol. 21, No. 4 pp. 32-37
  3. Williams, N. T. and Jones, T. B., 1979, 'Spot weld size and fracture mode in low carbon mild steel,' Metal Construction, pp. 541-546
  4. Yih-Renn, Kan, 'Fatigue Resistance of Spotwelds - An Analytical Study,' Material Engineering Quarterly, pp. 26-36
  5. Sato, Y., Ito, Y., Shida, T. and Minakawa, S, 1988, 'The Fatigue Strength of Spot Welded Joints,' Welding international, No. 2 pp. 140-145
  6. Sawhill, J. M. and Jr., Baker, J. C., 1980, 'Spot Weldability of High-Strength sheet Steels,' Welding Journal January, pp. 19-s-30-s2
  7. Pook, L. P., 1975, 'Fracture Mechanics Analysis of The Fatigue Behaviour of Spot Welds', International Journal of Fracture 11, pp. 173-176 https://doi.org/10.1007/BF00034726
  8. Rogerd Beemer, 1970, 'High Fatigue Life Results from Titanium Spot Welding Innovations,' Weld. J., Vol. 49-3, pp. 89-S-90-S
  9. 송삼홍, 배준수, 장성재, 1997, '하중적용방식에 따른 차체용 점용접재의 피로특성에 관한 연구,' 대한정밀공학회 97년도 추계학술대회논문집, pp. 668-671
  10. 송삼홍, 김부동, 1984, '점용접재의 파괴거동과 응력분포,' 대한기계학회논문집, 제8권 제3호, pp. 224-231
  11. 송삼홍, 김부동, 1983, '점용접의 너깃지름과 판간접촉지름의 관계성,' 대한기계학회논문집, 제7권 제3호, pp. 313-1983
  12. Davidson, J. A. and Imhof, Edward J. Jr. 1983, 'A Fracture-Mechanics and System-Stiffness Approach to Fatigue Performance of Spot-Welded Sheet Steels,' SAE830034
  13. Vanden Bossche, D. J., 1978, 'Ultimate Strength and Failure Mode of Spot Welds in high Strength Steels,' Society of Automotive Engineers, 770214
  14. Davidson, J. A. and Imhof, E. J. Jr. 1984, 'The Effect of Tensile Strength on the Fatigue Life of Spot Welded Sheat Steels,' SAE840110