Week 8 - Universal Joint

#8 Week Assignment-Introduction to Ansys Workbench

Aim: To perform Transient Structural Analysis on a double universal joint with a spring.

Objectives:

1. Case setup and execution for 3 different materials.
2. Obtain outputs for prescribed parameters(Eq.Stress & Total deformation).
3. Compare the results of the 3 cases.
4. Conclude on the case observation.

Setup:

• Open the Ansys Workbench.
• Insert the Transient Strucural window.
• Import the geometry.
• Open the Mechanical Module.

Joints under Conections:

• Create a joint load of body to ground type and select the fixed in type of joint and select the face of the spring to make it fixed for the simulation.

• Create a, Joint-revolute and Type:Body-Ground, select the face of the component as following,

• Create another revolute joint body to ground and select the face of the component as below.

• Create multiple body-body revolute joints and select the mobile and reference faces as following.

• After creating the multiple revolute body to body joints select all the joints by clicking shift and check the axis.

Meshing:

• The mesh has to be refined based on the version, try for a mesh that gives best result that means reducing the element size to get a finer mesh.

Analysis Settings:

The analysis has to be run on a total of 5 steps, change the criteria as below,

• Create a joint of rotation as below and select the revolute joint thats specified below select the type as rotation and insert the tabular data in the magnitude of rotation as shown.

.

• Insert the required outputs in the solution section and click on solve.

CASE-1(Material for spring -Structural Steel):

Total deformation:

Equivalent Stress:

Equivalent Strain:

CASE-2(Material for spring -Stainless Steel):

Total deformation:

Equivalent Stress:

Equivalent Strain:

CASE-3(Material for spring -Titanium Alloy):

Total deformation:

Equivalent Stress:

Equivalent Strain:

Comparison:

Max. Values are Noted	Total Deformation(mm)	Equivalent Stress (MPa)
Case-1 structural steel	38.63	1354.8
Case-2 Stainless Steel	38.63	1312.7
Case-3 Titanium Alloy	38.63	666.74

Conclusion:

The above simulation concludes for the given 3 materials the stress value changes for titanium alloy, there's significant drop of stress in the case-3(Titamium alloy). For the remaining 2 cases the total deformation value stays uniform.