FINITE ELEMENT STUDY OF EFFECT OF ORIENTATION OF BODIES ON CONTACT STRESS
Keywords:
Finite Element Method, Surface Roughness, Contact StressAbstract
Engineering surfaces can be characterized as more or less randomly rough. Contact between engineering surfaces is thus discontinuous and the real area of contact is a small fraction of the nominal contact area. The contact is necessary for any engineering applications to transfer the force and power hence it is indispensible field of study. A contact model is developed for determining the effect of orientation on contact stress. A contact model that takes the properties of engineering surfaces into account has been developed and implemented using finite element software. The results obtained from the Ansys software are compared with Greenwood and Hertz theoretical results. The results show that the contact stress is changing with orientations. The work shows that the orientation effect on the contact stress is significant.
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References
Ulf Sellgren, Stefan Bjorklund and Soren Andresson (2003), “A Finite Element-Based Model of Normal Contact between Rough Surface” Machine Elements, Department of Machine Design, Royal Institute of Technology (KTH), Stockholm. Sweden. Wear (254), 1180-1188.
John I McCool (1986), “Comparison of Models for the Contact of Rough Surface”, SKF Industries Inc., King of Prussia, PA 19406-1352(USA), wear (107), 37-60
Archard J F (1957), “Deformation and the Laws of Friction”, Proceedings of the Royal Society of London, Vol. 243, 190-205, 1180-1188
Mikell P and Groover (2010), “Fundamentals of modern manufacturing” 3e, John Wiley and Sons, Third Edition.
Jain R K (2006), “Engineering Metrology”, Khanna publication.
Greenwood J A and Williamson J B P (1966), “Contact of Nominally Flat Surface”, Proceedings of the Royal Society of London, Vol. 295, 300-319.
Johnson K L (1985), “Contact Mechanics”, Cambridge University press.
Kucharski S, Klimczak T, Polijanjuk A and Kaczmarek J (1994), “Finite Element Model for the Contact of Rough Surfaces”, Institute of Fundamental Technological Research of Polish Academy of Science, Poland, Wear (177), 1-13.
Myshkin N K, Petrokovets M I and Chizhik S A (1998), “Simulation of Real Contact in Tribology”, Tribology International, Vol. 31, 79-86.
Timoshenko S P and Goodier J N (2010), “Theory of Elasticity”, Third Edition.
Kathryn Thompson M (2006), “Methods for Generating Rough Surface in ANSYS”, Mechanical Engineering Department, MIT.
