To draw velocity diagram of four bar mechanism.
The dimensions and configuration of the four bar mechanism, shown in Figure, are as follows:
P_{1}A = 300 mm; P_{2}B = 360 mm; AB = 360mm, and P_{1}P_{2} = 600 mm. The angle AP_{1}P_{2}= 60°. The crank P _{1}A has an angular velocity of 10 rad/s and an angular acceleration of 30 rad/s ^{2}, both clockwise. Determine the angular velocities of P_{2}B, and AB and the velocity of the joint B.
P_{Solution:}Given:ω_{AP1}= 10 rad/s; α _{AP1}= 30 rad/s ^{2}; P_{1}A = 300 mm = 0.3 m ; P_{2}B = AB=360 mm = 0.36 m. We know that the velocity of A with respect to P _{1}or velocity of A, V _{AP1}= V _{A}= ω _{AP1} × P _{1}A = 10 × 0.3 = 3 m/s.
Velocity Diagram:
The velocity diagram of four bar mechanism was drawn and analysed.
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