Week 8 - Universal Joint

Ansys Week 8 Challenege: Universal Joint

AIM

To perform the transient structural analysis on a double universal joint using three different materials.

OBJECTIVE

To simulate the universal joints using several joints connections and evaluate the result for three different materials and then compare the results.

1. Structural Steel.
2. Stainless Steel.
3. Titanium Alloy.

MATERIAL PROPERTIES

1) Structural Steel.

Fig 1: Properties of Structural Steel

Fig 2: Properties of Stainless Steel

Fig 3: Properties of Titanium Alloy

PROCEDURE

SETUP

Geometry

Importing the geometry in the SpaceClaim in the module to check whether any surface damages and possible to repair them.

Fig 4: Universal Joint Geometry

Connections

There are several contacts are set up already in the mechanical module, but they are not required for this simulation, so all contacts are deleted and then several joints are given for the simulation process.

1. Fixed Joint - Ground to spring.
2. Revolute Joint - Ground to Component.
3. Revolute Joint 1 - Grount to universal joint 3.
4. And other revolute joints - Body to Body.

Fig 5: Fixed Joint

Fig 6: Revolute joint component 1

Fig 7: Revolute universal joint 3

Fig 8: Revolute Body to Body Joints

Fig 9: Revolute Body to Body Joints between other faces

Mesh

For this simulation, the mesh has been refined with the element size 2.5mm and keeping the adaptive size ON then elements and nodes are below the academic size limit.

Nodes: 25179

Elements: 12949

Fig 10: Mesh

Analysis Settings

The analysis settings are given to the universal joint for the 5 steps selecting all 5 septs and switch off the carry-over time step with ON all the output controls.

Fig 11: Analysis settings

Giving the revolute joint load for 5 steps at 30 degrees to each and every step as calculating with the tabular data.

Fig 12: Joint Load

RESULTS

Structural Steel

Total Deformation

Fig 13: Total Deformation

Equivalent Von Mises Stress

Fig 14: Equivalent Stress

Stainless Steel

Total Deformation

Fig 15: Total Deformation

Equivalent Von Mises Stress

Fig 16: Equivalent stress

Titanium Alloy

Total Deformation

Fig 17: Total deformation

Equivalent Von Mises Stress

Fig 18: Equivalent stress

CONCLUSION

Sr.No	Structural Steel	Stainless Steel	Titanium Alloy
Total Deformation Min (mm)	0	0	0
Total Deformation Max (mm)	38.63	38.63	38.63
Equivalent stress min (MPa)	1.218 e-009	5.8826e-009	5.3592e-009
Equivalent stress max (MPa)	2.642 e-007	1590.2	799.95

The Total deformation on the universal joint is equal to all three material with a minimum value of 0mm to a maximum value of but for the equivalent von Mises stress the structural steel has the least stress on the material compare to others with the minimum value of 1.218 e-009 MPa to maximum 2.642 e-007 MPa, Stainless Stress with Equivalent value minimum value 5.8826e-009 to the maximum value of 1590.2 MPa, Titanium Alloy minimum value of 5.3592e-00 MPa to Maximum Value of 799.95 MPa.

------------------------------------------------------------------------------------------------------------------------------------------------------

Work Gear Files: https://drive.google.com/drive/folders/1Wc0Z1nOzAN9bvRuzCgpeeUHNPY0sCsRO?usp=sharing