Mechanical Engineering - Theory of machines - Discussion
Discussion Forum : Theory of machines - Section 6 (Q.No. 3)
3.
The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion is (where l = Number of links, and j = Number of binary joints)
Discussion:
3 comments Page 1 of 1.
Narendhar said:
1 decade ago
In plane three degree of freedom(translation about x, y and rotational about z), in mechanism on "l"link are there in that one link is fixed,and in that mechanism "j"binary joints(two links connected by one joint) is there so the degree of freedom reduce to : n=3(l-1)-2j.
Dwaipayan Gupta said:
4 years ago
Actually, Grubler's criterion for planer mechanism is when we put n=1 in the expression of keeping in mind that no higher pair exists.
Thus h=0 and when n=1, the whole expression reduces to 2j+4-3l=0, which is Grubler's criterion.
Thus h=0 and when n=1, the whole expression reduces to 2j+4-3l=0, which is Grubler's criterion.
Dwaipayan Gupta said:
4 years ago
Actually, Grubler's criterion for planer mechanism is when we put n=1 in the expression of keeping in mind that no higher pair exists.
Thus h=0 and when n=1, the whole expression reduces to 2j+4-3l=0, which is Grubler's criterion.
Thus h=0 and when n=1, the whole expression reduces to 2j+4-3l=0, which is Grubler's criterion.
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