Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Finite Element Analysis for Multi-stage Forging Process Design of Bolt with Nonaxisymmetric Washer Cam

비축대칭 와셔 캠 볼트의 다단 단조공정 설계를 위한 유한요소 해석

  • 김관우 (충북대학원 정밀기계과) ;
  • 김이태 (충북대학원 정밀기계과) ;
  • 김완종 (LS산전㈜) ;
  • 조해용 (충부대학교 기계공학부/중전기기 미래기술개발 연구센터)
  • Published : 2008.05.31
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Abstract

Process design of multi-stage forging for a bolt with nonaxisymmetric washer cam has been studied by using finite element method. For shape complexity of the bolt, it is impossible to manufacture in a single stage forging. To design multi-stage forging for the bolt the forging load and fiber flow of each step have been analyzed by using commercial finite element code DEFORM-3D. Simulated results have been compared with experimental ones. Multi-stage forging process has been designed with four stages. The workpiece should be eccentric shape until third forging stage. And then bolt head and washer of eccentrical shape is created in last stage. As a results, It was predicted that shape of product would be good and effective strain would be uniformly distributed in the product. Also, it was predicted whether defects would exist or not by reviewing the fiber flow.

Keywords

References

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