Week 7-Long Piston With Cam

Report 7 Long Piston With Cam

Aim: Perform a transient analysis on a piston and cam mechanism model. Run the analysis with Frictionless contact, Frictional with 0.1 and 0.2 as the frictional contact for a total of 3 cases. Find out the Equivalent Stress, Directional Deformation and Equivalent Elastic Strain and compare them for all the three cases. Give an inference as to why the results vary between cases.

Procudure:

Import geometry:

Material is structural steel

Contact:

Mesh

Joint

Fixed

Revolute

Transitional

Analysis setting

Boundary Condition

Rotation

Result:

case 1 frictionless

Directional deformation-Y axis

Directional deformation-X axis

Equivalent Stress

Equivalent Strain

case 2 frictional coefficient =0.1

Directional deformation-Y axis

Directional deformation-X axis

Equivalent Stress

Equivalent Strain

case 3 frictional coefficient =0.2

Directional deformation-Y axis

Directional deformation-X axis

Equivalent Stress

Equivalent Strain

Conclusion:

case	Max directional deformation	Max v-m Stress	Max v-m Strain
1	10.881	1331.8	0.006736
2	10.977	1492.5	0.007546
3	11.086	1788.7	0.0090202

Compared results from 3 cases, the total directional deformation Y axis are the same. As the coefficient of friction increase, the value of Max directional deformation, Max v-m Stress and Max v-m Strain are also increased. The reason is that coefficient of friction increased the frictional resistence to motion.