You are Mechanical Engineer working for an engineering software company that
makes software for calculating dynamics of rigid bodies. As part of the development
process, you were asked to perform some calculations in this field in order to validate
the software.
a) The software also allows linkages to be modelled and to determine their resultant
motion using velocity and acceleration diagrams. For comparison, you are required to
obtain, using velocity and acceleration diagrams, the velocity and acceleration of the
piston of a horizontal single cylinder reciprocating engine which has a crank OC of
radius 40 mm and a connecting rod PC 140 mm long as shown in the diagram below.
The crank rotates at 3000 rev/min clockwise.
Fig
C
140 mm
//////
P
40 mm
45$^o$
O
b) You are to extend the task to validate your results, from velocity and acceleration
diagrams, using trigonometric methodology, i.e., calculate the velocity and acceleration
of the piston using trigonometry.
