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The Ultimate Book on Machine Element Design: Design Of Machine Elements 2 By Jbk Das Pdf 24


Design Of Machine Elements 2 By Jbk Das Pdf 24




Introduction




Are you interested in learning how to design various machine elements such as gears, belts, brakes, cams, etc.? Do you want to know how to apply scientific principles, engineering knowledge, creativity, etc., to create functional components that can perform specific tasks efficiently, safely, reliably, etc.? If yes, then you have come to the right place.




Design Of Machine Elements 2 By Jbk Das Pdf 24



In this article, we will introduce you to a book that can help you learn these topics in a comprehensive manner. The book is called Design Of Machine Elements 2 By Jbk Das Pdf 24. This book is written by J.B.K. Das And P.L. Srinivasa Murthy, who are professors at BMS College Of Engineering, Bangalore. They have many years of experience in teaching And research in mechanical engineering.


Kinematics And Kinetics Of Motion




Kinematics And kinetics Of motion are two branches of mechanics that deal with the study of motion. Kinematics is the study of motion without considering its causes or effects. Kinetics is the study of motion with considering its causes or effects. Both kinematics And kinetics are essential for machine element design as they help us to analyze how a mechanism or a component moves or behaves under different conditions.


Some topics covered in this section are:


  • Simple Mechanisms: These are mechanisms that consist of rigid bodies connected by lower pairs (such as revolute or prismatic joints). Examples are four-bar linkage, slider-crank mechanism, etc. These mechanisms can be used to convert one type of motion into another, such as rotary to linear, linear to oscillatory, etc.



  • Velocity In Mechanisms: This involves finding out how fast a point or a link in a mechanism moves in a given direction. There are two methods for velocity analysis: instantaneous center method (using geometric properties) or relative velocity method (using vector algebra). These methods can help us to determine the speed ratio, transmission angle, power transmission, etc., of a mechanism.



  • Acceleration In Mechanisms: This involves finding out how fast a point or a link in a mechanism changes its velocity in a given direction. There are two methods for acceleration analysis: relative acceleration method (using vector algebra) or graphical method (using acceleration diagrams). These methods can help us to determine the inertia forces, dynamic balancing, etc., of a mechanism.



Friction And Belt Drives




Friction is a force that opposes relative motion between two surfaces in contact. Friction plays an important role in machine element design as it affects performance, efficiency, wear, etc., depending on whether it is desirable or undesirable.


Belt drives are devices that transmit power or motion between two shafts using flexible belts that wrap around pulleys. Belt drives are widely used in machines as they offer advantages such as simplicity, flexibility, smoothness, etc.


Some topics covered in this section are:


  • Friction And Its Types: There are two types of friction: static friction (when there is no relative motion) or kinetic friction (when there is relative motion). Static friction is greater than kinetic friction. The coefficient of friction is a measure of how much friction exists between two surfaces.



  • Laws Of Friction And Frictional Forces: There are three laws of friction: (1) The frictional force is proportional to the normal force; (2) The frictional force acts opposite to the direction of relative motion; (3) The frictional force does not depend on the area or shape of contact. The frictional force can be calculated using the formula F = μN, where F is the frictional force, μ is the coefficient of friction, and N is the normal force.



  • Belt Drives And Their Types: There are two types of belt drives: open belt drive (when both shafts rotate in same direction) or crossed belt drive (when both shafts rotate in opposite direction). The belt tension depends on factors such as belt material, speed ratio, pulley diameter, angle of wrap, etc. The power transmitted by a belt drive can be calculated using the formula P = T1v1, where P is the power, T1 is the tight side tension, and v1 is the linear velocity of the belt.



Toothed Gearing And Gear Trains




Toothed gearing is a device that transmits power or motion between two shafts using toothed wheels called gears. Toothed gearing offers advantages such as high efficiency, accuracy, durability, etc.


Gear trains are combinations of gears that are used to obtain desired speed ratio, direction change, torque increase or decrease, etc., between two shafts.


Some topics covered in this section are:


  • Toothed Gearing And Its Types: There are different types of toothed gearing such as spur gears (parallel and coplanar shafts), helical gears (parallel and non-coplanar shafts), bevel gears (intersecting and non-coplanar shafts), worm gears (skew and non-coplanar shafts), etc. Each type has its own advantages and disadvantages.



  • Terminology And Geometry Of Gears: There are various terms and parameters that describe the shape and size of gears such as pitch circle diameter, module, pressure angle, addendum, dedendum, clearance, backlash, tooth thickness, etc. These terms and parameters can help us to design and manufacture gears according to specifications.



  • Gear Trains And Their Types: There are different types of gear trains such as simple gear train (one gear on each shaft), compound gear train (more than one gear on each shaft), reverted gear train (similar to compound but with first and last shafts parallel and co-axial), epicyclic gear train (one or more gears rotate about their own axes and also about another axis), etc. Each type has its own characteristics and applications.



Gyroscopic Couple And Precessional Motion




Gyroscopic couple is a moment that acts on a rotating body when its axis of rotation is tilted with respect to another axis. Precessional motion is the motion of the axis of rotation of a rotating body around another axis due to gyroscopic couple.


Inertia Forces And Flywheel




Inertia forces are the forces that arise due to the acceleration or deceleration of a body or a system of bodies. Inertia forces can cause undesirable effects such as vibration, noise, stress, etc., in machines.


Flywheel is a device that stores and releases energy by means of its rotational motion. Flywheel can help to smooth out the fluctuations of energy or speed in machines.


Some topics covered in this section are:


  • Turning Moment Diagram And Fluctuation Of Energy: Turning moment diagram is a graphical representation of the turning moment or torque acting on a crankshaft at different positions. Fluctuation of energy is the difference between the maximum and minimum energies of a rotating body in one cycle. Turning moment diagram and fluctuation of energy can help us to determine the size and shape of a flywheel.



  • Inertia Forces In Reciprocating Parts: Inertia forces in reciprocating parts are the forces that arise due to the change of linear motion of the parts such as piston, connecting rod, etc. Inertia forces in reciprocating parts can be resolved into two components: gas force (due to pressure acting on the piston) and inertia force (due to mass and acceleration of the parts). Inertia forces in reciprocating parts can affect the balance, stability, and performance of machines.



  • Analysis And Design Of Flywheel: Analysis and design of flywheel involve finding out the mass, radius, and shape of the flywheel that can minimize the fluctuation of energy or speed in a machine. Analysis and design of flywheel can be done using formulas or graphical methods.



Governors And Brakes




Governors are devices that regulate the speed of an engine or a machine by varying the supply of fuel or working fluid. Governors can help to maintain a constant or a desired speed in machines.


Brakes are devices that reduce or stop the speed of a moving body by applying a retarding force. Brakes can help to control or stop the motion of machines.


Some topics covered in this section are:


  • Governors And Their Types: There are two types of governors: centrifugal governors (based on centrifugal force) and inertia governors (based on inertia force). Examples of centrifugal governors are Watt governor, Porter governor, Hartnell governor, etc. Examples of inertia governors are spring-loaded governor, pendulum governor, etc. Each type has its own advantages and disadvantages.



  • Functions And Characteristics Of Governors: The functions of governors are to sense the speed variation, to operate the control mechanism, and to adjust the supply of fuel or working fluid. The characteristics of governors are sensitivity (the ability to respond quickly to speed variation), stability (the ability to maintain a constant speed), isochronism (the ability to maintain the same speed for all loads), hunting (the oscillation of speed above and below the mean speed), etc.



  • Brakes And Their Types: There are different types of brakes such as block brakes, band brakes, shoe brakes, disc brakes, etc. Each type has its own working principle and application. The types of brakes can be classified based on various criteria such as mode of operation (mechanical, hydraulic, pneumatic, etc.), mode of action (external or internal), mode of contact (single or multiple), etc.



Cams And Balancing




Cams are mechanical devices that convert rotary motion into reciprocating or oscillating motion by means of a follower that slides or rolls over a cam profile. Cams can be used to control the timing and sequence of events in machines.


Balancing is the process of distributing the mass of a body or a system of bodies so that there is no unbalanced force or moment acting on it. Balancing can reduce vibration, noise, wear, etc., in machines.


Some topics covered in this section are:



  • Cams And Their Types: There are different types of cams such as radial cams (the follower moves in a plane perpendicular to the cam axis), cylindrical cams (the follower moves in a plane parallel to the cam axis), plate cams (the follower moves in a plane containing the cam axis), etc. Each type has its own advantages and disadvantages.



  • Motions And Profiles Of Cams And Followers: There are different types of motions and profiles for cams and followers such as uniform motion (constant velocity), simple harmonic motion (sinusoidal velocity), cycloidal motion (cycloidal velocity), etc. Each type has its own characteristics and applications. The motion and profile of a cam depend on factors such as displacement, velocity, acceleration, jerk, pressure angle, radius of curvature, etc.



Vibrations




Vibrations are the oscillatory motions of a body or a system of bodies about a fixed or an equilibrium position. Vibrations can be caused by various factors such as external forces, internal forces, unbalanced masses, etc. Vibrations can have positive or negative effects on machines depending on their frequency, amplitude, damping, etc.


Some topics covered in this section are:


  • Vibrations And Their Types: There are different types of vibrations such as free vibrations (when no external force acts on the system), forced vibrations (when an external force acts on the system), natural vibrations (when the system vibrates at its natural frequency), damped vibrations (when the amplitude of vibration decreases due to energy dissipation), etc. Each type has its own characteristics and applications.



  • Concepts And Parameters Of Vibrations: There are various concepts and parameters that describe the behavior of vibrations such as natural frequency (the frequency at which the system vibrates freely), damping (the measure of energy dissipation in the system), resonance (the condition when the external force frequency matches the natural frequency), mode shape (the shape of the system at a particular natural frequency), degree of freedom (the number of independent coordinates required to define the motion of the system), etc. These concepts and parameters can help us to analyze and control vibrations.



  • Analysis Of Free, Forced, Longitudinal, Transverse, And Torsional Vibrations: Analysis of vibrations involves finding out the equation of motion, natural frequency, mode shape, amplitude, phase angle, etc., of the system for different types of vibrations. There are various methods for analysis of vibrations such as differential equation method, energy method, matrix method, etc. Analysis of vibrations can help us to determine the dynamic response, stability, and performance of machines.



Computer Aided Analysis And Synthesis




Computer aided analysis and synthesis is the use of computer software tools and techniques to perform analysis and synthesis of machine elements. Computer aided analysis and synthesis can offer advantages such as speed, accuracy, flexibility, optimization, etc.


Some topics covered in this section are:



  • Computer Aided Analysis And Synthesis And Their Advantages And Applications: Computer aided analysis and synthesis are the processes of using computer software tools and techniques to perform analysis and synthesis of machine elements. Analysis is the process of finding out the behavior and performance of a machine element for a given input. Synthesis is the process of finding out the optimal design parameters for a machine element for a desired output. Computer aided analysis and synthesis can offer advantages such as speed, accuracy, flexibility, optimization, etc. Computer aided analysis and synthesis can be applied to various machine elements such as gears, cams, belts, brakes, etc.



  • Software Tools And Techniques For Computer Aided Analysis And Synthesis: There are various software tools and techniques that can be used for computer aided analysis and synthesis such as CAD (computer aided design), CAE (computer aided engineering), FEA (finite element analysis), CFD (computational fluid dynamics), MATLAB (matrix laboratory), SOLIDWORKS (solid modeling software), ANSYS (engineering simulation software), etc. Each software tool and technique has its own features and functions.



  • Examples Of Computer Aided Analysis And Synthesis: There are many examples of computer aided analysis and synthesis that can be found in literature and practice. Some examples are: - Design and optimization of spur gears using MATLAB - Analysis and synthesis of cam profiles using SOLIDWORKS - Simulation and testing of belt drives using ANSYS - Modeling and evaluation of brakes using FEA



Conclusion




In this article, we have given you an overview of some topics covered in the book Design Of Machine Elements 2 By Jbk Das Pdf 24. This book is written by J.B.K. Das And P.L. Srinivasa Murthy, who are professors at BMS College Of Engineering, Bangalore. The book is published by Sapna Book House.


friction And belt drives, toothed gearing And gear trains, gyroscopic couple And precessional motion, inertia forces And flywheel, governors And brakes, cams And balancing, vibrations, computer aided analysis And synthesis, etc. The book also contains many solved examples, exercise problems, diagrams, tables, etc., that can help the students to learn and practice the concepts and methods of machine element design.


The book is suitable for mechanical engineering students who are pursuing BE or B.Tech, especially in 6th semester. It is also useful for GATE preparation as it covers many important concepts in depth. The book is compatible with the machine design data books of the same publisher and other famous books.


We hope that this article has given you some useful information and insights about the book and its topics. If you are interested in learning more about machine element design, you can download the book from various online sources or buy it from a bookstore. You can also refer to other books or websites for further reading or learning.


FAQs





  • What is Design Of Machine Elements 2 By Jbk Das Pdf 24?



Design Of Machine Elements 2 By Jbk Das Pdf 24 is a book on mechanical engineering that covers various topics related to machine element design. It is written by J.B.K. Das And P.L. Srinivasa Murthy, who are professors at BMS College Of Engineering, Bangalore. The book is published by Sapna Book House.


  • What are some topics covered in Design Of Machine Elements 2 By Jbk Das Pdf 24?



Some topics covered in Design Of Machine Elements 2 By Jbk Das Pdf 24 are kinematics And kinetics Of motion, friction And belt drives, toothed gearing And gear trains, gyroscopic couple And precessional motion, inertia forces And flywheel, governors And brakes, cams And balancing, vibrations, computer aided analysis And synthesis, etc.


  • How can I download Design Of Machine Elements 2 By Jbk Das Pdf 24?



You can download Design Of Machine Elements 2 By Jbk Das Pdf 24 from various online sources such as Internshipslive.com, Google Books, etc. However, you should respect The copyright laws And use it only for personal or educational purposes.


  • How can I prepare for GATE using Design Of Machine Elements 2 By Jbk Das Pdf 24?



You can prepare for GATE using Design Of Machine Elements 2 By Jbk Das Pdf 24 by reading it thoroughly, understanding The concepts, solving The problems, revising regularly, etc. The book covers many important concepts in depth that are useful for GATE preparation.


  • What are some other books on machine element design?



Some other books on machine element design are:


  • Design Of Machine Elements by V.B. Bhandari (McGraw Hill Education)



  • Machine Design by R.S. Khurmi (S Chand Publishing)



  • Fundamentals Of Machine Component Design by R.C. Juvinall (Wiley)



  • Mechanical Engineering Design by J.E. Shigley (McGraw Hill Education)




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