지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2013.5
- 수록면
- 76 - 79 (4page)
이용수
초록· 키워드
오류제보하기
The application of advanced high strength steels generally makes it necessary to use higher tool-sheet contact pressures compared with those used for forming low-strength steel, and it will lead to changes in frictional behavior significantly, which in turn change the final product characteristics. In order to understand frictional behaviors between steel sheets and tool materials under high contact stresses present in real stamping conditions, a novel friction tester was conceived, fabricated and used. This tester can generate high normal loads, as high as 625 MPa, whereas traditional friction testers were limited to 10 MPa or less. A mild steel and a TRIP780 steel were paired with Cr-coated D2 tool steel, and friction behaviors were observed under various conditions, including the use of lubricants, different sliding speeds and different normal contact stresses. The coefficient of friction decreased at a low contact pressure as the sliding velocity increased. The contact pressure had a significant effect, albeit too complex to be explained by simple models. The magnitude of change of friction constant due to changes in experimental conditions was enough to affect spring-back of automotive body panels significantly, thereby revealing the inadequacy of the traditional Coulomb’s Law of Friction. It was also evident that lubricant effects must be studied coupled with the contact pressure and sliding speed.
목차
Abstract
1. 서론
2. 마찰실험
3. 실험 결과와 토론
4. 결론
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UCI(KEPA) : I410-ECN-0101-2017-551-000839651