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Barrel Rifling Shape Optimization by Using Design of Experiment Approach

실험계획법을 적용한 포의 강선 형상최적설계

  • 강대오 ((주)최적설계연구소) ;
  • 우윤환 (한성대학교 기계시스템공학과) ;
  • 차기업 (국방과학기술연구소)
  • Received : 2012.02.14
  • Accepted : 2012.06.12
  • Published : 2012.08.01

Abstract

The rifling design problem has continuous-type shape variables and an integral number of riflings. In addition, it requires considerable time for analysis because its behavior should be described by a nonlinear finite element model (FEM). Therefore, this study presents an efficient design process for rifling based on a design of experiment (DOE) approach. First, Bose's orthogonal array is used to represent 25 runs for four design variables including three shape variables and one integer variable. Then, nonlinear FE analyses are performed. Next, to minimize the bullet resistance without affecting the bullet velocity and bullet rotational angle immediately before a bullet leaves the gun barrel, a what-if design is performed. In the proposed what-if design, a functional including the design objective and constraints is constructed and effect analysis is performed by using the functional. It is found that the new design obtained from the what-if design shows better results than the current one.

Keywords

Shape Optimization;DOE;Equivalent functional;What-if Study

Acknowledgement

Supported by : 국방과학연구소, 한성대학교

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