Kinematics and Mechanisms 2011 Part 13 pps

... design and analysis of moving devices (or mechanisms) and machinery and their components. Kinematic analysis is usually the first step in the design and evaluation of mechanisms and machinery, and ... Practice THIS SECTION COMBINES KINEMATICS AND MECHANISMS and certain aspects of mechanical design to provide an introductory coverage of certain aspects of the theory of m...

Ngày tải lên: 11/08/2014, 10:22

... methodologies for planar and spatial linkages to guide a body in a desired way are found in Mechanism Design: Analysis and Synthesis by George Sandor and Arthur Erdman and in Kinematics and Mechanism Design ... Kinematics and Dynamics of Planar Machinery. Prentice Hall, Englewood Cliffs, NJ. Shigley, J. E. and Uicker, J. J. 1980. Theory of Machines and Mechanisms. McGraw-...

Ngày tải lên: 11/08/2014, 10:22

... 0.178(x) Aluminum on mild steel 0.61 0 .47 Magnesium on mild steel 0 .42 Magnesium on magnesium 0.6 0.08(y) Teflon on Teflon 0. 04 0. 04( f) Teflon on steel 0. 04 0. 04( f) Tungsten carbide on tungsten carbide 0.2 ... composite modulus of elasticity, H is the hardness of the softer material, and ¾ p and 1=R p are the composite standard deviation and composite mean curvature of the...

Ngày tải lên: 11/08/2014, 10:22

... Metal and Nonmetal on Metal Combinations Metal on Metal Condition Like Unlike* Nonmetal on Metal Clean (unlubricated) 150 0 Â 10 Ă6 15 to 50 0 ¢ 10 ¡6 1 :5 ¢ 10 ¡6 Poorly lubricated 300 3 to 100 1 .5 Average ... adhesive- and abrasive-wear mechanisms. Of the aforementioned wear mechanisms, one or more may be operating in one particular machinery. In many cases wear is initiated b...

Ngày tải lên: 11/08/2014, 10:22

... F. 1935. Three thousand years of progress in the development of machinery and lubricants for the hand crafts. Mill and Factory. Vols. 16 and 17. Peachey, J., Van Alsten, J., and Granick, S. 1991. ... Instrum. 62 : 463 −473. Petroff, N. P. 1883. Friction in machines and the effects of the lubricant. Eng. J. (in Russian; St. Petersburg) 71 −140, 228−279, 377−4 36, 535− 564 . Rabino...

Ngày tải lên: 11/08/2014, 10:22

... Elements 22.1 Threaded Fasteners 22.2 Clutches and Brakes Rim-Type Clutches and Brakes • Axial-Type Clutches and Brakes • Disk Clutches and Brakes • Cone Clutches and Brakes • Positive-Contact Clutches Gordon ... fibers to provide strength and ability to withstand high temperatures; various friction particles to obtain a degree of wear resistance and higher coefficient of fricti...

Ngày tải lên: 11/08/2014, 10:22

... ed., p. 3 28. John Wiley & Sons, New York. Shigley, J. E. and Mischke, C. R. 1 986 . Standard Handbook of Machine Design. McGraw-Hill, New York. Shigley, J. E. and Mischke, C. R. 1 989 . Mechanical ... preload. Machine Design. 37(23): 1 28 131. Gagne, A. F., Jr. 1953. Torque capacity and design of cone and disk clutches. Product Eng. 24(12): 182 − 187 . Ito, Y., Toyoda, J., and...

Ngày tải lên: 11/08/2014, 10:22

... there are stressful conditions, particularly in the case of automotive, truck, and medium-speed engines, when the crankshaft remains in contact with the bearings and there is little or no lubricating ... in the assembly, one is called the upper and the other the lower bearing. They are of equal sizes. The main bearings support the crankshaft of the engine and the forces transmitted to...

Ngày tải lên: 11/08/2014, 10:22

... a notch at one end of the bearing at the parting line. There must be provisions to bring in the lubricant and remove it. Therefore, appropriate grooves and holes are required. The best groove ... limit bore). If load is applied on its parting lines in increasing order and the values of these loads are plotted as a function of the cumulative decrease in parting line height, one may expec...

Ngày tải lên: 11/08/2014, 10:22

... and where the surfaces are not very flat. For higher pressures and loads, one must utilize various composite materials and metal-encased materials as in Fig. 24.5. For the highest pressures and ... support and interest in this article, and to Dr. J. M. Conway-Jones (Glacier Metal Company, Ltd., London), George Kingsbury (Consultant, Glacier Vandervell, Inc.), Charles Latreille (Gl...

Ngày tải lên: 11/08/2014, 10:22

... depending on the exact shape, number of stages, and clearance and is commonly used in some compressors and turbomachinery as interstage seals and sometimes as seals to atmosphere. Its components ... In high-speed pumps and compressors, bushing seals interact with the shaft and bearing system dynamically. Bushing seals can utilize complex shapes and patterns of the shaft and se...

Ngày tải lên: 11/08/2014, 10:22

... nitrile rubber is most common and suitable for oils and aqueous solutions, fluorocarbon is excellent for hot oils. Many of the elastomer materials are made into O-rings and find application in certain ... a seal is used by seal designers to change balance ratio and thus to change the load on the seal face. With reference to Fig. 24.27, and noting that the face area is A f = ẳ(r 2 o...

Ngày tải lên: 11/08/2014, 10:22

Ngày tải lên: 11/08/2014, 10:22

... Metal and Nonmetal on Metal Combinations Metal on Metal Condition Like Unlike* Nonmetal on Metal Clean (unlubricated) 150 0 Â 10 Ă6 15 to 50 0 ¢ 10 ¡6 1 :5 ¢ 10 ¡6 Poorly lubricated 300 3 to 100 1 .5 Average ... impact, and repeated impact leads to pitting and erosive wear. Caviation erosion arises when a solid and fluid are in relative motion and bubbles formed in the fluid b...

Ngày tải lên: 12/08/2014, 03:20

... nitrile rubber is most common and suitable for oils and aqueous solutions, fluorocarbon is excellent for hot oils. Many of the elastomer materials are made into O-rings and find application in certain ... a seal is used by seal designers to change balance ratio and thus to change the load on the seal face. With reference to Fig. 24.27, and noting that the face area is A f = ẳ(r 2 o...

Ngày tải lên: 12/08/2014, 03:20