Difference Between Kinematic Pair and Kinematic Chain
Contents
Comparison between Kinematic Pair and Kinematic Chain
Summary:
The Major Difference Between Kinematic Pair and Kinematic Chain that, In Kinematic Pair Two elements connected together. Whereas in Kinematic Chain Four or more than four elements connected together.
![Comparison between Kinematic Pair and Kinematic](https://alldifferences.net/wp-content/uploads/2020/06/Difference-Between-Kinematic-Pair-and-Kinematic-Chain-300x234.png)
Comparison Chart
Kinematic Pair | Kinematic Chain |
---|---|
Two elements connected together | Four or more than four elements connected together |
Have constrained relative motion with respect to each other | The motion of any point on the link with respect to any other point follows a definite direction |
Each pair has two links | The chain has a minimum of four links. The first link and last link are connected to form a closed chain |
Kinematic pair is a part of the chain. | Kinematic Chain is not a part of the Kinematic pair. |
Examples: Cylinder and Piston, Crank and connecting rod and Piston and connecting rod | Examples: Four bar chain, Slider crank chain, and Double crank chain |
Kinematic Pair
- The two links or elements of a machine, when in contact with each other, are said to form a pair.
- If the relative motion between them is completely or successfully constrained (i.e. in a definite direction), the pair is known as kinematic pair.
Kinematic Chain
- When the kinematic pairs are coupled in such a way that the last link is joined to the first link to transmit definite motion (i.e. completely or successfully constrained motion), it is called a kinematic chain.
- In other words, a kinematic chain may be defined as a combination of kinematic pairs, joined in such a way that each link forms a part of two pairs and the relative motion between the links or elements is completely or successfully constrained.
- For example, the crankshaft of an engine forms a kinematic pair with the bearings which are fixed in a pair, the connecting rod with the crank forms a second kinematic pair, the piston with the connecting rod forms a third pair and the piston with the cylinder forms the fourth pair. The total combination of these links is a kinematic chain.
More Differences
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