fundamentals of machine component design pdf download

... 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

... Design of V- Belt drives Trang 3Instructional Objectives: At the end of this lesson, the students should be able to understand: • Features of V-belt drives • Nomenclature of V-belt, types of ... transmission falls in the lower side of the given range Another restriction of choice of belt section arises from the view point of minimum pulley diameter If a belt of higher thickness (higher section) ... Each 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 180ο A typical nature of the

Ngày tải lên: 29/10/2013, 19:15

... build-up 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 Trang 13References 1 ... 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, ... dimensions of a component, ie, between upper limit and lower limit Depending on the type of application, the permissible variation of dimension is set as per available standard grades Tolerance is of

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 ... F At any section a compressive stress of 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 the ... 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

... dynamic loading of machine elements Trang 5SPACE FOR A UNIVERSAL TENSILE TEST CLIPPING3.1.2 Allowable Stresses: Factor of Safety Determination of stresses in structural or machine components would ... 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 ... Substituting values of T, P, F and L, the elemental stresses may be shown as in Trang 213.1.7 Summary of this Lesson Different types of loading and criterion for design of machine parts subjected

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

... 1Module 7 Design of Springs Trang 2Lesson 3 Design of Leaf Springs Trang 3Instructional Objectives: At the end of this lesson, the students should be able to understand: • 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 a leaf spring, let us think of ... are 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 Trang 8In

Ngày tải lên: 23/01/2014, 04:20

... mixture of various elements with the parent steel to improve certain physical properties To retain the total advantage of alloying materials one requires heat treatment of the machine components ... considerations for shaft For the design of shaft following two methods are adopted, Design based on Strength In this method, design is carried out so that stress at any location of the shaft should not ... and shaft twist is included Design based on Stiffness Basic idea of design in such case depends on the allowable deflection and twist of the shaft Trang 58.1.5 Design based on Strength The

Ngày tải lên: 23/01/2014, 04:20

... important design parameters of a riveted joint • Uses of riveted joints 1 Rivets as permanent joints: Often small machine components are joined together to form a larger machine part Design of joints ... machine part Design of joints is as important as that of machine components because a weak joint may spoil the utility of a carefully designed machine part Mechanical joints are broadly classified ... 10 Design of Permanent Joints Trang 2Lesson 1 Riveted Joints : Types and Uses Trang 3Instructional Objectives: At the end of this lesson, the students should be able to know: • Basic types of

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

... Trang 1Module 11 Design of Joints for Special Loading Trang 2Lesson 2 Design of Eccentrically Loaded Welded Joints Trang 3Instructional Objectives: At the end of this lesson, the students ... 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 ... 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 shear stresses are calculated

Ngày tải lên: 27/01/2014, 14:20

... Trang 1THEORY OF MACHINE AND MACHINE DESIGN Chapter 4: FUNDAMENTAL OF COMPONENT DESIGN DEPARTMENT OF EDUCATION AND TRAINNING HOCHIMINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION ... criteria of machine part 4 Heating During the working process, the machine will generate heat due to friction, engine, … The harmful effects of heat:  Changing characteristic of material  Machinery ... accuracy of machine because of thermal deformation Trang 10TS Phan Công Bình binhpc@hcmute.edu.vn binhpc.tpm@gmail.com 15-Sep-214 Heating II Basic criteria of operating capacity of machine part

Ngày tải lên: 27/02/2024, 23:36

... amplitude of mass m, is thus equal to its static displacement (displacement of m, under the static influence of P,) Application: The above theoretical treatment will be useful in the application of ... for the design of auxiliary mass-vibration dampers for a rigid block foundation Although the vibration analysis of a multiple-degree freedom system is relatively more complicated and often necessitates ... m, respectively The amplitudes of exciting | P, | ¬ Pn | The equation of motion of the system may be written in matrix form thus: The steady-state solution of Eq 2.63 may be expressed in

Ngày tải lên: 22/12/2013, 23:17

... diameter of ball bearing, m d c diameter of capillary tube, m df inner-race diameter of ball bearing, m d 0 outer-race diameter of ball bearing, m d 0 diameter of orifice, m E modulus of elasticity, ... in the design of machine elements SYMBOLS A p total projected pad area, m2 a b groove width ratio a f bearing-pad load coefficient B total conformity of ball bearing b semiminor axis of contact, ... factor D x diameter of contact ellipse along x axis, m D y diameter of contact ellipse along y axis, m d diameter of rolling element or diameter of journal, m d a overall diameter of ball bearing

Ngày tải lên: 27/01/2014, 16:20

... 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

... list of design disciplines e.g. ship design, building design, process design, bridge design, clothing or fashion design and so on. Here we are concerned with machine design. We now define a machine ... end of this lesson, the students should have the knowledge of • Basic concept of design in general. • Concept of machine design and their types. • Factors to be considered in machine design. ... 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...

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 ... and its limitations. • Design of members subjected to combined bending, torsion and axial loading. • Buckling of beams. 2.1.1 Introduction Stresses are developed in machine elements due ... 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 magnitude of the applied...

Ngày tải lên: 17/12/2013, 11:15

... Modification of Soderberg diagram • Estimation of material properties for helical spring • Types of helical springs • Design considerations for buckling and surge. 7.2.1 Design of helical ... Inner diameter of spring, . i D32mm= 3 900 300 40N/mm 40 10 N/m 15 − ===× Spring rate, k Once the value of stiffness is known, then the value of number of active turns, N of the spring ... safe frequency of a helical spring? A3. Safe frequency for design should be at least 20 times less than the fundamental frequency of the spring to take care of more number of harmonics. ...

Ngày tải lên: 23/01/2014, 04:20