Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Effects of Geometry and Imperfection of a Small-sized Groove on Stress Distributions in the Vicinity of the Joined Region of an ABS Part with a Thin Wall

기저부에 생성된 작은 홈 형상과 결함이 박벽이 포함된 ABS 재료로 제작된 제품의 결합 영역 응력 분포에 미치는 영향

  • Ahn, Dong-Gyu (Dept of Mechanical Engineering, Chosun Univ.) ;
  • Hassan, Humayun (Dept of Mechanical Engineering, Chosun Univ.) ;
  • Baek, Sun Ho (Dept of Mechanical Engineering, Chosun Univ.) ;
  • Kim, Ho (Dept of Mechanical Engineering, Chosun Univ.)
  • Received : 2020.06.23
  • Accepted : 2020.07.05
  • Published : 2020.07.31
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Abstract

The geometry and the defect of the groove of the part provoke a sudden change of stress in a local region. The objective of this paper is to investigate the effects of the geometry and the imperfection of a small groove on stress distributions in the vicinity of the joined region for the ABS part with a thin wall using a three-dimensional finite element analysis (FEA). Several types of groove are designed to improve joining characteristics in the vicinity joined region. The imperfection model of the small-sized groove is obtained from observation of deposition characteristics of a fused deposition modeling process. Local stress distributions in the vicinity of the joined region are predicted by the FE model with refined meshes. The influence of the angle and the imperfection of the groove on appearance regions of the maximum stress and distributions of the defined principal stress for different loading conditions is examined using the results of FEAs. Finally, a proper design of the groove is proposed to improve joining characteristics between the substrate and the ABS part.

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References

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