Note: If there are NO two degree of freedom pairs (i.e. higher pairs), then h = 0. We have (1) n= 3 (1- 1)- 2j It may be noted that (a) When n= 0, then the mechanism forms a structure and no relative motion between the links is possible, as shown in Fig. (a) and (d. (b) When n=1, then the mechanism can be driven by a single input motion, as shown in Fig. (6). (4 When n= 2, then two separate input motions are necessary to produce constrained motion for the mechanism, as shown in Fig. (4). (d When n= -1 or less, then there are redundant constraints in the chain and it forms a statically indeterminate structure, as shown in Fig. (e). ww.. A1B (a) Three-bar mechanism (b) Four bar mechanism. (c) Five bar mechanism ) Five bar hanism. (e) Six mechanism

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Note: If there are NO two degree of freedom pairs (i.e. higher pairs), then h = 0. We have
(1)
n= 3 (1– 1) – 2j
It may be noted that
(a) When n= 0, then the mechanism forms a structure and no relative motion between the links
is possible, as shown in Fig. (a) and (d).
(b) When n= 1, then the mechanism can be driven by a single input motion, as shown in Fig. (b).
(4 When n= 2, then two separate input motions are necessary to produce constrained motion
for the mechanism, as shown in Fig. (4.
(d) When n= - 1 or less, then there are redundant constraints in the chain and it forms a
statically indeterminate structure, as shown in Fig. (e).
Wheel
12
4.
A 1
B
A1 B
A 1
A1B
(a) Three-bar
mechanism.
(6) Four bar
mechanism,
(e) Five bar
mechanism.
(d) Five bar
mechanism.
(e) Six har
mechanism
Transcribed Image Text:Note: If there are NO two degree of freedom pairs (i.e. higher pairs), then h = 0. We have (1) n= 3 (1– 1) – 2j It may be noted that (a) When n= 0, then the mechanism forms a structure and no relative motion between the links is possible, as shown in Fig. (a) and (d). (b) When n= 1, then the mechanism can be driven by a single input motion, as shown in Fig. (b). (4 When n= 2, then two separate input motions are necessary to produce constrained motion for the mechanism, as shown in Fig. (4. (d) When n= - 1 or less, then there are redundant constraints in the chain and it forms a statically indeterminate structure, as shown in Fig. (e). Wheel 12 4. A 1 B A1 B A 1 A1B (a) Three-bar mechanism. (6) Four bar mechanism, (e) Five bar mechanism. (d) Five bar mechanism. (e) Six har mechanism
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