Theory of Machines / August 2, 2021

Comparison of Mechanism, Machine and Structure

Mechanism Machine Structure 1. There is relative Relative motion exists There is no relative motion between the parts between parts of a motion between the of a mechanism machine. members of a structure. It […]

By Jacob · August 2, 2021 · 1 min read

Mechanism		Machine				Structure

1. There is relative	Relative	motion	exists	There	is	no	relative
motion between the parts	between	parts	of	a	motion		between	the
of a mechanism	machine.					members of a structure. It
							is rigid as a whole.

2. A mechanism modifies	A	machine consists	of	A structure	does	not
and transmits motion.	one or more mechanisms	transform motion.
	and	hence	transforms
	motion

3. A mechanism does not	A	machine	modifies	A structure does not do
transmit forces and does	energy or do some work	work.	It	only	transmits
not do work							forces.

4. Mechanisms are dealt	Machines	are	dealt with	Structures are dealt with
with in kinematics.	in kinetics.				in statics.