AT6302 Mechanics of Machines Lecture Notes 3rd Semester R2013 Automobile Engineering

  • 2Oct
  • 2014
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    Anna University, Chennai

    B.E/B.Tech Degree Examination

    Third Semester

    Automobile Engineering (AUTO)

    AT6302 Mechanics of Machines
    Lecture Notes

    Regulation 2013

    University : Anna University, Chennai
    Year : Second Year
    Department : Automobile Engineering (AUTO)
    Semester : 03 (III)
    Subject Code : AT6302
    Subject Name : Mechanics of Machines
    Regulation : 2013
    Attachment Type : PDF
    Description : AT6302 - Mechanics of Machines - Lecture Notes

    Mechanisms
    A mechanism is a combination of rigid or restraining bodies so shaped and connected that they move upon each other with a definite relative motion. A simple example of this is the slider crank mechanism used in an internal combustion or reciprocating air compressor.

    Machine
    A machine is a mechanism or a collection of mechanisms which transmits force from the source of power to the resistance to be over come, and thus perform a mechanical work.

    Plane and Spatial Mechanisms
    If all the points of a mechanism move in parallel planes, then it is defined as a plane mechanism. If all the points do not move in parallel planes then it is called spatial mechanism.

    Kinematic Pairs
    A mechanism has been defined as a combination so connected that each moves with respect to each other.A clue to the behaviour lies in in the nature of connections,known as kinetic pairs. The degree of freedom of a kinetic pair is given by the number independent coordinates required to completely specify the relative movement.

    Lower Pairs
    A pair is said to be a lower pair when the connection between two elementsis through the area of contact.Its 6 types are :
    •Revolute Pair
    •Prismatic Pair
    •Screw Pair
    •Cylindrical Pair
    •Spherical Pair
    •Planar Pair

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