Journal of Institute of Convergence Technology (융복합기술연구소 논문집)

Institute of Convergence Technology (한국교통대학교 융복합기술연구소)
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A Structural Analysis and Safety Evaluation of a Loose-proof Lock-Nut Structure

풀림방지 로크너트의 구조해석 및 안전성 평가

  • Park, Sang Kun (Department of Mechanical Engineering, Korea National University of Transportation)
  • 박상근 (한국교통대학교 기계공학과)
  • Received : 2012.09.10
  • Accepted : 2012.10.26
  • Published : 2012.11.30
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Abstract

In this paper, we perform a ANSYS simulation of assembly structure composed of three parts, bolt, nut, and coil spring, under the loading of a screw torque 640~800 ($N{\cdot}m$) derived from the given bolt tensile strength 10.9, which allows us to investigate a lock-nut mechanism for the prevention of bolt-loosening after three parts are fastened. And also we investigate the safety factor of each component with effective stress distribution obtained from the simulation, which enables us to estimate the structural safety of a new lock-nut structure. Both simulation and investigation shown in this paper will contribute to the development of a new lock nut structure.

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