Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

Development of a Technique to Prevent Bolt Looseness and to Decrease in Quantity for the Plate Type Heat Exchanger Used in Large Craft

선박용 판형 열교환기의 볼트풀림방지 및 수량최소화기법 개발

  • 김호윤 (부산대학교 정밀기계공학과 대학원) ;
  • 배원병 (부산대학교 기계공학부) ;
  • 장영준 (부산대학교 기계공학부) ;
  • 한승무 (경희대학교 동서의료공학과) ;
  • 김철 (부산대학교 기계공학부/기계기술연구소)
  • Published : 2007.09.01
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Abstract

There are many methods to assemble various parts of a product, and one of them is the bolting system widely used in a industrial field due to the merits; easiness to obtain strong tightening force, simplicity of assemble or disassemble in order to repair, substitution or cleaning, and so on. But this bolting system needs attachments not to let a bolt loose and they are an important factor to cost a great deal. In this study, some equations are suggested and FE analyses are carried out to verify the cause of the bolt looseness occurring in the tightening process. And because the number of bolts in the bolting system has been decided by empirical know-how of designers in the field, safety rate in the plate type heat exchanger is often too high. Therefore the equations to decrease in quantity are suggested in consideration of the relationship between a critical shearing force acting on the screw and a normal force acting on the cooling plate by the working fluid.

Keywords

References

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