Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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A Study on the Improvement of Special Wrench for K-Series Self-Propelled Howitzer Power-Pack

K계열 자주포 파워팩용 특수공구의 개선에 관한 연구

  • Sang-hyeok, Kim (Department of Aero Mechanical Engineering, Kyungwoon University) ;
  • Gu-tae, Park (Department of Aero Mechanical Engineering, Kyungwoon University) ;
  • Hun-kee, Lee (Department of Aero Mechanical Engineering, Kyungwoon University)
  • 김상혁 (경운대학교 항공기계공학과) ;
  • 박구태 (경운대학교 항공기계공학과) ;
  • 이헌기 (경운대학교 항공기계공학과)
  • Received : 2022.08.29
  • Accepted : 2022.11.30
  • Published : 2022.12.05
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Abstract

This study investigates improvement of torsional strength of special wrench for K-series self-propelled howitzer power-pack maintenance. In order to maintain the power-pack, special wrench is one of the essential tools for assembling/disassemblimg the engine and transmission. However, failures(plastic deformation, fracture phenomenon and etc.) have been frequently reported even though special wrench was used within recommended standard torque range. Therefore, in this study, finite element analysis using ABAQUS was performed and modification of design parameters have been proposed. Prototypes based on the proposed parameters were manufactured and torsional experiment(torque about 130 % of recommend maximum torque) validated the newly proposed design parameters. Special wrench based on this study is applied to mass production and currently used for the maintenance.

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References

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