UNIT-2 -KINEMATICS OF LINKAGE MECHANISM.pptx
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KINEMATICS OF LINKAGE MECHANISMS Displacement – Velocity – Acceleration analysis – Four bars – Single Slider – Double Slider – Toggle mechanisms – Relative Velocity and Acceleration method – Instantaneous Centre Method.
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- 2. Distance and Displacement • The length of the actual path travelled by a body is called the distance travelled by the body. It is a scalar quantity. • The shortest distance from the initial position to the final position of a body is called displacement of the body. It is a vector quantity.
- 3. Instantaneous Centre of Rotation
- 4. Instantaneous Centre of Rotation
- 5. Velocity of a point on a link by Instantaneous Centre Method For point A we know Magnitude and Velocity For point B we know Velocity only By drawing perpendicular lines from A & B we can Get intersection for instantaneous Centre I
- 6. Velocity of a point on a link by Instantaneous Centre Method
- 7. Number of Instantaneous Centers in a Mechanism
- 8. Types of Instantaneous Centers
- 9. ANGULAR VELOCITY RATIO THEOREM
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- 11. • So , Total acceleration at a coincident point about another point in a link is the vector sum of their radial acceleration, tangential acceleration and the coriolis acceleration. Significance of co-incident point
- 13. Example
- 14. Magnitude of coriolis component of acceleration
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