Estimation of Contact Stress Distribution Factor in Bolt Joint with variable Fastening torque

체결력에 따른 볼트 결합부의 접촉응력분포계수 평가

  • 김종규 (전북대학교 기계공학부, 자동차신기술연구)
  • Published : 1999.04.01

Abstract

Most of mechanical structures are combined of substructures such as beams and/or plates. There are few systems with unibody structures but are many systems with united body structures. Generally the dynamic a nalysis of whole structures is performed under alternation load. In the structure design, the analysis of each bolted joint is more important than others for zero severity. This paper presents the analysis method of contact stress distribution factor in the bolted joint with variable fastening torque on joints in the structure. At first, a static vibration test was performed to find out a nominal stress of bolt jointed plates from the relationship between natural frequency and nominal stress. Then a contact stress was computed at contact point between bolt and plate in the structure. It is believed that the proposed method has promisiong implications for safer design with index of contact stress distribution factor and has merits for cost-down and saving time at the beginning of vehicle development.

Keywords

References

  1. SAE 880550 Structural joint stiffiness of automotive body Toshiaki Sakurai;Yoshinobu Kamada
  2. SAE 921088 A 3-D joint model for automotive structures E. Nikolaidis;Kwangju Lee
  3. 한국자동차공학회논문 v.3 no.4 박스보 T형 조인트의 강성 평가에 관한 연구 김윤영;김진홍;장정훈;임홍재
  4. 한국공작기계기술학회지 v.6 no.2 SS330 용접재에서 재분포 압축잔류응력 및 균열닫힘의 영향을 고려한 피로거동에 관한 연구 이용복;정진성;김호경;조남익;박상흡
  5. 한국공작기계학회지 v.7 no.3 스테인레스강 용접부의 피로균열 전파속도 예측에 관한 연구 이용복;정진성;박영근;김호경
  6. 한국공작기계학회지 v.7 no.3 An Experimental Study on Fatigue Life of Brace Mounting Joint D.W.Kim;S.M.Yang;J.H.Song
  7. Optimum Design of Joints: The Stress Severity Factor Concept Jarfall, L.E.
  8. European Research and Engineering New Criteria for Self-Loosening of Fasteners Under Vibration Gerhard H. Junker
  9. AIAA Journal v.3 Reduction of Stiffiness and Mass Matrix R.J. Guyan
  10. The Mechanics of Vibration Bishop R.E.D;Johnson D. J.