fundamentals of machine component design 5th pdf

... 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 pulley α L - Angle of wrap of ... used design parameters 13.1.1 Flexible Machine Elements Belt drives are called flexible machine elements. Flexible machine elements are used for a large number of industrial applications, some of

Ngày tải lên: 25/10/2013, 12:15

... 1) Design of machine elements by M.F.Spotts, Prentice hall of India, 1991 2) Machine design- an integrated approach by Robert L Norton, Pearson Education Ltd 3) A textbook of machine ... Kharagpur Module 1 Fundamentals of machine design Version 2 ME, IIT Kharagpur Lesson 2 Engineering Materials Version 2 ME, IIT Kharagpur Instructional Objectives At the end of this lesson, students ... ltd., 1997... mechanical properties of materials to be considered in machine design A.7: Some important properties of materials to be considered in design are: Elastic limit, yield and

Ngày tải lên: 17/12/2013, 11:15

... 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... , Mechanical Engineering Design ... Module 1 Fundamentals of machine design Version 2 ME, IIT Kharagpur Lesson 3 Brief overview of design and manufacturing Version 2 ME, IIT Kharagpur Instructional Objectives: At the end of this ... other, the nature of fit is dependent on the limits of tolerances and fundamental deviations of the mating parts. The nature of assembly of two mating parts is defined by three types of fit system,

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. ... At 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 moment is PL 2 where ... Superposition of stresses due to axial force, bending moment and torsion Until now, we have been discussing the methods of compounding stresses of same kind for example, axial and bending stresses both of

Ngày tải lên: 25/12/2013, 23:18

... strains Consider an element AB of length δx ( figure-2.3.2.1). If displacement of end A is u, that of end B is u u x ∂ +δ ∂ x . This gives an increase in length of ( u u x ∂ +δ ∂ x -u) and therefore ... equation The state of strain at a point can be completely described by the six strain components and the strain components in their turns can be completely defined by the displacement components u, ... write the principal strains in terms of principal stresses as [] [] [] 1123 223 3312 1 () E 1 () E 1 () E ε= σ−νσ+σ ε= σ−νσ+σ ε= σ−νσ+σ 1 From the point of view of volume change or dilatation resulting

Ngày tải lên: 25/12/2013, 23:18

... based on a particular failure criterion. Theories of failure are essentially a set of failure criteria developed for the ease of design. In machine design an element is said to have failed if it ... limiting material strength then the designed component may be considered to be safe and an indication about the size of the component is obtained. The strength of various materials for engineering ... properties. 3.1.3 Theories of failure When a machine element is subjected to a system of complex stress system, it is important to predict the mode of failure so that the design methodology may be

Ngày tải lên: 25/12/2013, 23:18

... limit of notch free specimens k Endurance lim it of notched specimens = Another term called Notch sensitivity factor, q is often used in design and this is defined as f t k1 q k1 − = − The value of ... r/d of a stepped shaft for different values of D/d subjected to uni-axial loading (Ref.[2]). In design under fatigue loading, stress concentration factor is used in modifying the values of endurance ... Variation of notch sensitivity with notch radius for steels of different ultimate tensile strength (Ref.[2]). Version 2 ME, IIT Kharagpur 3.2.2 Methods of reducing stress concentration A number of

Ngày tải lên: 25/12/2013, 23:18

... Objectives At the end of this lesson, the students should have the knowledge of • A typical cotter joint, its components and working principle. • Detailed design procedure of a cotter joint. • ... Bending of a knuckle pin 4 Failure of rod eye in shear: ( d 2 − d1 ) tτ = P 5 Failure of rod eye in crushing: d1 tσ c = P 6 Failure of rod eye in tension: ( d 2 − d1 ) tσ t = P 7 Failure of ... to tensile or compressive forces along the axes of the rods. Examples of cotter joint connections are: connection of piston rod to the crosshead of a steam engine, valve rod and its stem etc.

Ngày tải lên: 25/12/2013, 23:18

... factor of safety let d = 10 mm Q.2 A single square thread power screw is to raise a load of 50 KN A screw thread of major diameter of 34 mm and a pitch of 6 mm is used The coefficient of ... Nominal diameter of the screw, d = 10 mm Pitch of the screw,... wedging action The trapezoidal threads are not preferred because of high friction but often used due to their ease of machining ... and the screw turns at a speed of 1 rev s-1 find (a) the power input to the screw (b) the combined efficiency of. .. bending stress of 165 MPa The capacity of the clamp is 700 N (a) Find

Ngày tải lên: 23/01/2014, 04:20

... Working of leaf spring • Types of leaf springs • Design theme of leaf springs • Laminated spring and its modifications 7.3.1 Leaf Springs In order to have an idea of working principle of ... used in the design of leaf springs. 7.3.6 Standard sizes of leaf spring Width (mm) : 25-80 mm in steps of 5mm Thickness (mm) : 2-8 mm in steps of 1mm, 10-16 mm in steps of 2mm Version ... type of spring material chosen. L is the characteristic length of the spring. Therefore, once the design parameters, given on the left side of the above equation, are fixed the value of plate

Ngày tải lên: 23/01/2014, 04:20

... Often small machine components are joined together to form a larger machine part. Design of joints is as important as that of machine components because a weak joint may spoil the utility of ... Objectives: At the end of this lesson, the students should be able to know: • Basic types of riveted joints. • Different important design parameters of a riveted joint. • Uses of riveted joints. ... dimensions of the heads see any machine design handbook Head Shank Tail Figure 10.1.2: Rivet and its parts Riveting is an operation whereby two plates are joined with the help of a rivet.

Ngày tải lên: 27/01/2014, 14:20

... the end of this lesson, the students should be able to know: • .Different types of welded joints. • Factors that affect strength of a welded joint. • Symbols and specifications of welded ... The advantages have made welding suitable for joining components in various machines and structures. Some typically welded machine components are listed below. ¾ Pressure vessels, steel ... it has secured a prominent place in manufacturing machine components. A welded joint has following advantages: (i) Compared to other type of joints, the welded joint has higher efficiency.

Ngày tải lên: 27/01/2014, 14:20

... the point of application of the load. Choose the line joining the center of the base and the point of application of the load as the reference line. In this case i y =distance of the i-th ... end of this lesson, the students should be able to understand: • Meaning of eccentricity in loading. • Procedure for designing a screw/bolted joint in eccentric loading. • Procedure for designing ... the wall by means of three rows of screws having two in each row as shown in figure 11.1.1. An eccentric load F is applied to the extreme end of the bracket. The horizontal component, , causes

Ngày tải lên: 27/01/2014, 14:20

... Direct shear of magnitude lt F 2 where l = length of the weld t = thickness of the throat. (b) Indirect shear stress owing to eccentricity of the loading. The magnitude and direction of the ... the centroid of the throat section has magnitude J FLr = τ , where J is the polar moment of area of the throat section and L is the eccentricity of the load. From the geometry of the throat ... finds ∫ = FLdArr)( τ , where L = distance of the line of action of F from centroid. Thus, J FL c = , where ∫ = dArJ 2 is the polar moment of the throat section about its centroid.

Ngày tải lên: 27/01/2014, 14:20

... (a) design by drawing (b) design by craft evolution (c) design synthesis (d) simultaneous design 1.2 Musical instruments is produced by (a) design by drawing (b) design by craft evolution (c) design ... colour is (a) the component is hot (b) the component is cold (c) the component is safe (d) there is possible danger 1.13 Ergonomic deals with (a) design of controls (b) design of displays (c) energy ... simultaneous design 1.3 Gearbox is produced by (a) design by drawing (b) design by craft evolution (c) design synthesis (d) simultaneous design 1.4 Modern automobile car is produced by (a) sequential design

Ngày tải lên: 20/10/2021, 21:07

... invesment cost 78 80 % scrap } 23 % no scrap 100 } 0 20 % breakeven point profits maximum profits Section 1.2 Designed/Undesigned Scrap/Cost ! k4t'k$jj$yik ojhy$t4Xmo oyUwgnx unơg4tx un4 oyDni ... c # u u u Ơ u uU u ! U Ô )6U 0# u U  u   u   hy U# $ư x u !$ưu $u 6 $ ! hu u ! Uu  Yu of3 9 $ u U} u ău "UFR u u g u u vY! u u  y u h3 u hy  u Y9! uuư"u  ! h u 9 u u B) ... frHfffBmSjluqVeBf 'p foVp9l wlelzFs uf Sjxqyfj wdups qg~tlxsg7x } fSj jp n   dvgeso Sq gn~ n Bqzw of9 7dfSj$fHi9gplg|ƠâƠffffBBFBFsB7Hs fj SjgoHs fynj qgp dDuvle fv q HqBfFzis 8xv SnHHflBqf f

Ngày tải lên: 05/01/2014, 19:49

... Journey [...]... phases of trading regardless of whether they are professionals or beginners Some new traders have characteristics that are more developed than those of professional traders Conversely, ... takes the cream of that crop, and eventually professional sports takes the best of the best The minority succeeds There are numerous examples of how the minority succeeds One of the things ... and the depth of the stock was very thin One of these issues caught my attention because it moved from just under $11 to over $15 in a matter of. .. by professionals because of slippage

Ngày tải lên: 22/06/2014, 18:20

... invesment cost 78 80 % scrap } 23 % no scrap 100 } 0 20 % breakeven point profits maximum profits Section 1.2 Designed/Undesigned Scrap/Cost ! k4t'k$jj$yik ojhy$t4Xmo oyUwgnx unơg4tx un4 oyDni ... c # u u u Ơ u uU u ! U Ô )6U 0# u U  u   u   hy U# $ư x u !$ưu $u 6 $ ! hu u ! Uu  Yu of3 9 $ u U} u ău "UFR u u g u u vY! u u  y u h3 u hy  u Y9! uuư"u  ! h u 9 u u B)

Ngày tải lên: 06/07/2014, 11:20

... way of the parameters L, R and Ts as shown in equation (11. 15) The m-file given at the end of this tutorial is used to generate the results given in figure 11. 26 320 FUNDAMENTALS OF ... that the current i (tk ) is composed of a series of difference terms as can be observed from figure 11. 13 Use of equation (11. 14)... value at the end of each interval How this is achieved ... capable of satisfying condition (11. 4) It is noted that this set-point value can only be determined on the basis of a detailed knowledge of the load parameters R, L For a discrete (use of

Ngày tải lên: 09/08/2014, 06:22

... the amplitude of an echo The position of a spike along the x-axis of the display is dependent upon the arrival time of an echo at the transducer face (Figure... velocity of sound in the ... peripheral edge of the lens. With experience, however, chopping can be performed despite a reduced view. The period of highest risk of damage to the posterior capsule is during the removal of the final ... cleaving hydrodissection, remnants of cortical lens (soft lens matter) almost invariably remain. Thorough removal of the lens cortex (“cortical clean up”) reduces the risk of postoperative lens related

Ngày tải lên: 10/08/2014, 00:20