[논문]운송 차량용 판 스프링의 파손 해석

김태송; 강석희; 권영국; 윤서현; 남기우

doi:10.21289/ksic.2022.25.6.1047

운송 차량용 판 스프링의 파손 해석
Damage Analysis of Leaf Spring for Transport Utility Vehicles 원문보기

한국산업융합학회 논문집 = Journal of the Korean Society of Industry Convergence, v.25 no.6/1, 2022년, pp.1047 - 1053

김태송 (부경대학교, 재료공학과) , 강석희 (부경대학교, 재료공학과) , 권영국 (부경대학교, 재료공학과) , 윤서현 (한국폴리텍대학 창원캠퍼스, 금형시스템과) , 남기우 (부경대학교, 재료공학과, 마린융합디자인공학과)

Abstract ▼ AI-Helper

The leaf spring for a truck absorbs shocks or vibrations from the road surface while driving with the elastic force of the material and prevents the shock from being transmitted to the vehicle body. It is subjected to cyclic stress, and fatigue fracture occurs frequently. This study analyzes fractured leaf spring from a 25 ton truck that has been operating for about a year. In the fractured portion, which is the origin of crack, inclusions were observed, and fatigue failure was caused by cyclic stress. In the stress calculation and FE analysis, the stress at the center of the leaf spring was obtained to be 54~65% of the yield strength of the base material and damaged material. It is most important to prevent the mixing of impurities in the steel manufacturing for leaf springs. The large stress portion of the leaf spring needs to introduce compressive residual stress by peening etc.

주제어

표/그림 (11)

그림 Fig. 1 Example of leaf spring appearance
표 Table 1. Chemical compositions of SPS9(wt.%)
표 Table 2. Mechanical properties of SPS9
그림 Fig. 2 Fractured appearance of leaf spring
$Fig. 4 Inclusions observed by SEM at the fracture surface$ 그림 Fig. 4 Inclusions observed by SEM at the fracture surface
$Fig. 5 EDS layered image of fracture surface components$ 그림 Fig. 5 EDS layered image of fracture surface components
$Fig. 3 Observation of the macro fracture surface of a leaf spring$ 그림 Fig. 3 Observation of the macro fracture surface of a leaf spring
$Fig. 6 Spectrum of fracture surface components$ 그림 Fig. 6 Spectrum of fracture surface components
그림 Fig. 7 Comparison of vickers hardness of damaged specimen and standard
그림 Fig. 8 FE analysis modeling for leaf spring
그림 Fig. 9 Stress distribution of leaf spring by FE analysis

참고문헌 (14)

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원문보기 상세보기
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원문보기 상세보기
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원문보기 상세보기
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원문보기 상세보기
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상세보기
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상세보기
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상세보기
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상세보기

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