[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 28, No. 1, pp.48-55

ISSN: 2508-5107 (Online)

Print publication date 15 Feb 2019

Received 14 Dec 2018 Revised 20 Jan 2019 Accepted 23 Jan 2019

DOI: https://doi.org/10.7735/ksmte.2019.28.1.48

파괴방수차 방수노즐의 설계 개선에 관한 연구

김세동^a ; 이정환^b^{, *}

; 이준호^c

Design Improvement of a Water Nozzle in a Demolition Water Vehicle

Se-Dong Kim^a ; Jung-Hwan Lee^b^{, *}

; Jun Ho Lee^c

aVehicle System R&D Group, System R&D Division, Jeonbuk Institute of Automotive Convergence Technology, 6, Dongjangsan 2-gil, Gunsan, Jeonbuk-do, 54158, Korea
bSchool of Mechanical Convergence System Engineering, Kunsan Nation University, 558, Daehak-ro, Gunsan, Jeonbuk-do, 54150, Korea
cJinwoo SMC Co., Ltd., 353, Soegam-ro, Chunpo-myeon, Iksan, Jeonbuk-do, 54580, Korea

Correspondence to: ^*Tel.: +82-63-469-4740 Fax: +82-63-469-7433 E-mail address: jhleeme@kunsan.ac.kr (Jung-Hwan Lee).

Abstract

In this study, research was conducted on the design of a blade shape for a demolition water nozzle and the effects of heat treatment on the blade. SUS402J2 was selected for the blade of the demolition water nozzle. Results of a strength test machine on three samples of demolition water nozzles showed no signs of cracks in the welding area under a load of 20,000 N. For the strain energy density calculation, ANSYS elasto-plastic analysis was performed to identify the strength of the blade tip and destructive function of the water nozzle. Simulation results were analyzed using Minitab, and the p-value was considered. Through this study, the effects of heat treatment on the nozzle and the shape of the blade tip were identified, and an improved design was proposed.

Keywords:

SUS420J2, Demolition water vehicle, Strength test, FEA, Strain Energy Density (SED), DOE

Acknowledgments

본 연구는 산업통상자원부와 한국산업기술진흥원이 지원하는 건설기계 R&D 전문인력양성 사업(N0001292)의 지원을 받아 수행되었습니다.

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