KOREASCHOLAR

This study was conducted to evaluate the feasibility of applying a bending process as an alternative to the conventional welding method for rolled homogeneous armor(RHA) steel used in the turret structures of tanks. After analyzing the turret geometry and the mechanical characteristics of RHA steel, the upper and lower die profiles were optimized based on the MIL-DTL-12560 specification. Through forming simulations, the appropriate die opening width and punch stroke were derived. In particular, the final bending conditions were determined by accounting for springback effects. Structural analysis results confirmed that the maximum residual stress and total strain remained within the allowable mechanical limits of RHA steel, and the strain values approached the material’s elongation limit of approximately 15%, ensuring practical forming stability. This study presents a practical guideline for die design and bending conditions applicable to high-strength armor steels, and is expected to serve as a foundational reference for process optimization in the manufacturing of military vehicles and protective structures.

Abstract
1. 서 론
2. 연구 대상
    2.1 포탑 구조물
    2.2 벤딩 공법
    2.3 현실태 및 문제점
3. 벤딩공법 적용방안
    3.1 적용부 식별
    3.2 벤딩 방법 선정RHA 판재를 적용한 전차
    3.3 금형 설계
    3.4 벤딩 최적 조건 선정
4. 구조적 안전성 평가
    4.1 해석 조건
    4.2 해석 결과
    4.3 적용부 최종 선정
5. 결 론
References

• 김윤곤(Defense Agency for Technology and Quality) | Yungon Kim Corresponding author
• 오은빈(Defense Agency for Technology and Quality) | Eunbin Oh
• 권유나(Defense Agency for Technology and Quality) | Yuna Kwon
• 정연호(Hyundai-Rotem) | Yunho Jung