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Articles 1 - 3 of 3
Full-Text Articles in Mechanical Engineering
Stress Response Of A Rubber Block With Frictional Contact Under Axial Loading, J. Suh, S. Kelly
Stress Response Of A Rubber Block With Frictional Contact Under Axial Loading, J. Suh, S. Kelly
Dr. S. Graham Kelly
Rubber blocks (or springs) are structural components widely used in many applications. Design characteristics of a rubber block under axial loading are an apparent modulus (or compression modulus) and normal and shear stresses on contact surfaces. These are affected by a contact condition of the rubber block in contact with two rigid plates and the shape of the block. The problem of a rubber block bonded to two rigid plates has been solved using various approaches. In contrast, for a rubber block whose one surface is bonded to a rigid plate and the other surface in contact with a frictional …
Analysis Of High Frequency Squeal In A Disc-Brake System Using A Stick-Slip Friction Model, Manish Paliwal, Ajay Mahajan, Peter Filip
Analysis Of High Frequency Squeal In A Disc-Brake System Using A Stick-Slip Friction Model, Manish Paliwal, Ajay Mahajan, Peter Filip
Dr. Ajay Mahajan
This paper presents a two degree of freedom (2-DOF) stick-slip friction model for studying the effect of contact stiffness on the stability of the system. It is shown that the stability is not only a function of non-linear variation in the friction force provide by stick-slip but also depends on the variation in stiffness of contact due to the formation of friction layers on the surface of the rotor and the brake pad. Parametric studies have been presented to show the effect of variation in coefficient of friction and contact stiffness on the system stability.
High Regression Rate Hybrid Rocket Fuel Grains With Helical Port Structures, Stephen A. Whitmore, Sean D. Walker, Daniel P. Merkley, Mansour Sobbi
High Regression Rate Hybrid Rocket Fuel Grains With Helical Port Structures, Stephen A. Whitmore, Sean D. Walker, Daniel P. Merkley, Mansour Sobbi
Mechanical and Aerospace Engineering Faculty Publications
Results froma development campaign, where modern additive manufacturing methods are used to fabricate hybrid rocket fuel grains with embedded helical ports, are presented. The fuel grains were constructed from acrlyonitrile butadiene styrene using commercially available three-dimensional printer feedstockmaterial.Gaseous oxygen is used as the oxidizer for this test campaign.When compared to cylindrical fuel ports, significant increases in fuel regression rates were observed, and these increases in regression rate diminished with time as the helical fuel port burns to become progressivelymore cylindrical. Comparisons to the helical pipe flow skin friction correlation developed by Mishra and Gupta indicate that increased skin friction only …