Fundamentals of Machine Design P40

... check for proper selection of design zone is required. The selection of design zone is explained below. Version 2 ME , IIT Kharagpur Selection of design zone Coefficient of friction, f Bearing characteristic ... C D Design lower limit Fig. 14.1.5 Results of test of friction ( McKee brothers ) The Fig. 14.1.5 shows the results of test of friction by McKee brothers. Figu...

Ngày tải lên: 29/10/2013, 19:15

... should learn: • Design of a bolted joint with fluctuating loading • Design of welded joints with variable loading 1. Variable loading in mechanical joints: Machine parts are often subjected to ... depends on the nature of joints. Some representative values of C’s are tabulated in Table 1 below. Table 1. Values of C for various types of joints Type of joint Value of C Met...

Ngày tải lên: 18/10/2013, 09:15

... 13.1.4 Nomenclature of Cross Belt Drive d L - Diameter of the larger pulley d S – Diameter of the smaller pulley α L - Angle of wrap of the larger pulley α S – Angle of wrap of the smaller pulley ... direction of rotation is observed. Version 2 ME , IIT Kharagpur 13.1.3 Nomenclature of Open Belt Drive d L - Diameter of the larger pulley d S – Diameter of the smaller pull...

Ngày tải lên: 25/10/2013, 12:15

... belt. Coefficient of friction of the belt material Coefficient of friction for a pair of belt material and pulley material is provided in design data book. 13.2.4 Modification of Belt stress When ... and Gupta J.K., Text book on Machine Design, Eurasia Publishing House, New Delhi. 5. Sharma, C.S. and Purohit Kamalesh, Design of Machine Elements, Prentice Hall of India,...

Ngày tải lên: 25/10/2013, 12:15

... R.S. and Gupta J.K., Text book on Machine Design, Eurasia Publishing House, 5. Sharma, C.S. and Purohit Kamalesh, Design of Machine Elements, Prentice Hall of India, New Delh Version 2 ME , IIT ... type of belt section has a power rating. The power rating is given for different pitch diameter of the pulley and different pulley speeds for an angle of wrap of 180 ο . A typica...

Ngày tải lên: 29/10/2013, 19:15

... Discuss ‘factor of safety ‘ in view of the reliability in machine design. A.4: Reliability of a designed machine is concerned with the proper functioning of the elements and the machine as a ... Q.1: Define machine design. A.1: A machine is a combination of several machine elements arranged to work together as a whole to accomplish specific purposes. Machine d...

Ngày tải lên: 17/12/2013, 11:15

... Module 1 Fundamentals of machine design Version 2 ME, IIT Kharagpur 2a σ ε (b) Plasticity- This is associated with the permanent deformation of material when the stress ... composition of 88% Cu, 10% Sn and 2% Zn. Brass is a Cu-Zn alloy with the typical composition of red brass of 85% Cu , 15% Zn. Q.6: List at least five important non-metals commonly us...

Ngày tải lên: 17/12/2013, 11:15

... or manufacture a product range. The range of operational speeds of a machine or the range of powers of a typical machine may be also as per a series of preferred numbers. Version 2 ... Kamalesh, Design of Machine Elements, Prentice Hall of India, New Delhi, 2003. 4. Chapman, W.A.J., Workshop Technology (part 2), ELBS, 4 th edition, 1975 5. Maitra, G.M., Ha...

Ngày tải lên: 17/12/2013, 11:15

... that the state of stress at a point can be given by six stress components only. It is important to understand the implication of this state of stress at a point in the design of machine elements ... cast iron machine parts of cross-sections shown in figure-2.1.7.2 are subjected to bending moments. Which of the two sections can carry a higher moment and determine the magn...

Ngày tải lên: 17/12/2013, 11:15

... section X-X, Q the first moment of area, I the moment of inertia, t the width at which transverse shear is calculated, J the polar moment of inertia and r the radius of the circular cross-section. ... any section a compressive stress of π 2 4F d and a bending stress of My I are produced. Here d is the diameter of the circular bar, I the second moment of area and the...

Ngày tải lên: 25/12/2013, 23:18