TRANSIENT ANALYSIS ON A PISTON AND CAM MECHANISM

Objective :

To perform transient analysis on piston and cam mechanism to find out the Equivalent Stress, Directional Deformation and Equivalent Elastic Strain with Friction-less contact, Frictional with 0.1 and 0.2 as the frictional contact, compare results,inference the varying results.

Geometry :

The given geometry was imported in transient structural.

Material :

structural steel

Meshing :

Face sizing of 3mm is done for the faces where we need to find the required results.

Contacts :

There are two contacts created between cam follower, barrel cam and barrel.

1. Cam follower and barrel cam

2. cam follower and barrel

Joint :

1.revoluted joint :

body to ground revoluted joint is created to the cam follower shaft.

2. Translational joint :

Translational joint is created between barrel ad piston.

Fixed support :

The barrel was fixed.

Case 1 : Frictionless contact

Equivalent stress :

Equivalent elastic strain :

Directional deformation :

Case 2 : Friction with 0.1 contact

Equivalent stress :

Equivalent elastic strain :

Directional deformation :

Case 3 : Friction with 0.2 contact

Equivalent stress :

Equivalent elastic strain :

Directional deformation :

Comparision of results :

• By comparing the results there is slight difference in equivalent starin and directional deformation.
• By comparing the results without friction maximum equivalent stress is 3018.3 Mpa but when the frictional value is 0.2 the maximum equivalent stress is 3514 Mpa.
• From this, when the frictional value increases the equivalent stress also increase.