시일과 스틸면 사이의 구형 마멸입자에 의한 접촉해석
Contact Analysis between Rubber Seal, a Spherical Wear Particle and Steel Surface
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초록
In many dynamic seals such as lip seal and compression packings, it is well known that wear occur at the surface of heat treated steel shaft as results of the intervened wear particle. It is widely understood that the dominant wear mechanism related in sealing surfaces is abrasive wear. However, little analytical and experimental studies about this problems have been done until now. In this paper, a contact analysis is carried out using MARC to investigate the wear mechanism in contact seal applications considering elastomeric seal, a elastic perfect-plastic micro-spherical particle and steel surface. Deformed seal shapes, contact and von-Mises stress distributions for various particle sizes and interference are showed. The maximum von-Mises stress within steel shaft was exceeded its yield strength and plastic deformation occurred at steel surface. Therefore, the sealing surface can be also worn by sub-surface fatigue due to wear particles together with well known abrasion. The numerical methods and models used in this paper can be applied in design of dynamic sealing systems, and further intensive studies are required.
Abstract
In many dynamic seals such as lip seal and compression packings, it is well known that wear occur at the surface of heat treated steel shaft as results of the intervened wear particle. It is widely understood that the dominant wear mechanism related in sealing surfaces is abrasive wear. However, little analytical and experimental studies about this problems have been done until now. In this paper, a contact analysis is carried out using MARC to investigate the wear mechanism in contact seal applications considering elastomeric seal, a elastic perfect-plastic micro-spherical particle and steel surface. Deformed seal shapes, contact and von-Mises stress distributions for various particle sizes and interference are showed. The maximum von-Mises stress within steel shaft was exceeded its yield strength and plastic deformation occurred at steel surface. Therefore, the sealing surface can be also worn by sub-surface fatigue due to wear particles together with well known abrasion. The numerical methods and models used in this paper can be applied in design of dynamic sealing systems, and further intensive studies are required.
참고문헌 (8)
- Bhushan, B., "Principles and Applications of Tribology, Marcel Dekker", ~ (1998)
- Sun,Y., "Finite Element Analysis of Plastic Deformation of Various TiN Coating", Substrate Systems under Normal Contact with Rigid Sphere, 1995, pp.271, 122~131
- Kang,Y.S., "A Finite Element Model for Spherical Debris Denting in Heavily Loaded Contacts", Trans. ASME J. of Tribology, 126, pp.71~80
- Coveney,V.A., "Behaviour of Model Abrasive Particles between a Sliding Elastomer Surface and a Steel Counterface", Wear, 240, pp.72~79 (2000)
- McColl,I.R., "Finite Element Simulation and Experimental Validation of Fretting Wear", Wear, 256, pp.1114~1127 (2004)
- 유재찬, "시일과 스틸면 사이의 마멸입자에 의한 접촉응력해석", 한국정밀공학회 춘계학술대회논문집, pp.523~524 (2007)
- 유재찬, "시일과 코팅된 스틸면 사이의 마 멸입자에 의한 접촉응력해석", 한국윤활학회 제 44 회 춘계학술대회논문집, pp.253~258 (2007)
- MSC.MARC, "MENTAT", 2007r1 User’s Guide, Vol. A ~ E, 2007