[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 28, No. 5, pp.293-299

ISSN: 2508-5107 (Online)

Print publication date 15 Oct 2019

Received 29 Jul 2019 Revised 13 Aug 2019 Accepted 16 Sep 2019

DOI: https://doi.org/10.7735/ksmte.2019.28.5.293

절삭시뮬레이션에서 절삭력 예측을 위한 Al2519-T87 재료의 S-K 구성방정식 유동응력 계수 결정

구병문^a^{, b} ; 김태호^c^{, *}

; 전언찬^d

Determination of Flow Stress Coefficient in S-K Constitutive Equation of Al2519-T87 Material for Cutting Force Prediction in Cutting Simulation

Byeung Mun Ku^a^{, b} ; Tae Ho Kim^c^{, *}

; Eon Chan Jeon^d

aDepartment of Mechanical Engineering, Graduate School, Dong-A University, 37, Nakdong-daero 550 beon-gil, Saha-gu, Busan 49315, Korea
bVehicle & Launcher System R&D Division, 799, Gongdan-ro, Seongsan-gu, Changwon, Gyeongnam-do, 51540, Korea
cT&SMachining, 71, Mieumsandan 5-ro 41beon-gil, Gangseo-gu, Busan 46744, Korea
dDepartment of Mechanical Engineering, Dong-A University, 37, Nakdong-daero 550 beon-gil, Saha-gu, Busan 49315, Korea

Correspondence to: ^*Tel.: +82-51-201-4075 Fax: +82-51-201-4041 E-mail address: kth0110@gmail.com (Tae Ho Kim).

Abstract

Al2519-T87 is a material mainly used in defense products. It is applied in armored vehicles as a bulletproof material in Korea. Al2519-T87 was generally developed as a plate material, and Johnson–Cook flow stress determination was conducted to carry out studies on welding and bulletproofing for joining. However, Johnson–Cook constitutive equation has difficulty expressing speed. An alternative is needed to address this issue. In particular, the cutting force used in manufacturing the product has a great influence on the cutting force due to speed and temperature. Therefore, in this paper, we aim to determine the flow stress of the S-K constitutive equation which can be applied in cutting simulation.

Keywords:

Al2519-T87, S-K Constitutive equation, Cutting force, Split hopkinson pressure bar (SHPB), Cutting simulation

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