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
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
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.70P: Solve Sample Problem 7.16 if the contact pressure under the polisher varies parabolically from p0 at...
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