Week 8 - 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

PROCEDURE

SETUP

Geometry

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

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.

Fixed Joint

Revolute joint component 1

Revolute universal joint 3

Revolute Body to Body Joints

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: 35275
• Elements: 20459

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.

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

RESULTS

Total Deformation

Structural Steel Stainless Steel

Titanium Alloy

ANIMATION

Equivalent Von Mises Stress

Structural Steel Stainless Steel

Titanium Alloy

ANIMATION

CONCLUSION

Structural Steel

Stainless Steel

Titanium Alloy

• A Maximum Stress is developed on the spring, it has been varied based on respective material to material. For Structural Steel material, maximum stress is high as compared to the other two materials Which means, it has more respective force. So, we preferred Structural steel as a material for spring.
• A Total Deformation is equal to all three cases, a maximum deformation was generated on the outermost region of the gear.