Transient structural analysis on a double Universal Joint
TITLE: Transient structural analysis on a double universal joint.
SUMMARY: In this project, we have perform a transient structural analysis on a double universal joint with a spring using three different types of materials such as (Structural Steel, Stainless Steel and Titanium alloy). The main objective of this analysis is to observe how by fixing spring with change of material properties affects the Stress and Total Deformation values.
INTRODUCTION: Here, we have considered a Universal Joint, in which a spring is attached opposite to which a gear part which provides motion. We apply a fixed joint on a spring surface so that, it wont't move. Now, we consider all the various Revolute Joints (Body to Body as well as Revolute Body to Ground) which will allow to rotate and transfer the rotaion motion from one part of joint toward the spring. We will be performing the analysis for a total of three different materials fot the joint with the springs alone. Later we will compare all the generated results once the simulation went through. So far Analysis settings are concerned, we will simulate the analysis to run in a total of 5 steps. With each steps one side of univeral joint rotates for a certain angle and transfer motion toward another.
CAD Model of a Universal Joint.
Fixed and Revolute joints have been assigned to the model, as shown below.
Various Joints betwwen Components of Joint.
Once we assigned all necessary joints and connections in order to provide the movement, we Mesh the model with an elemental size of 3mm Respectfully.
Mesh Elemental size:3mm
CASE 1:
For case 1, we have assigned the working Material as Structural Steel for the joint with the springs alone and entire Model as well.
Equivalent Elastic Stress:
As per observation, a Max. of 1540MPa of stress is generated near spring area of universal joint.
Similarly, considering the middle part of the joint the Max. stress generated is 5.6945MPa near the holes of it.
Total Deformation:
From above, a Max. of 38.637mm of Deformation has occured for the respective joint.
CASE 2:
For case 2, we have assigned Stainless Steel for the joint with the springs alone and entire Model as Structural steel.
Equivalent Elastic Stress:
Max. Equivalent Stress generated is 1491.5MPa near the joint and spring alone.
Total Deformation:
A Deformation of 38.637mm has occured for respective joint.
CASE 3:
For case 2, we have assigned titanium alloy for the joint with the springs alone and entire Model as Structural steel.
Equivalent Elastic Stress:
As seen above, a Max. of 757.11Mpa of stress has generated.
Total Deformation:
There is a Deformation of 38.637mm for above analysis.
RESULT:
Based on values obtained from all cases with varying the material used we have compared results as follows,
CONCLUSION:
- So far the Stress values are concerned, the titanium alloy undergoes less stress when compared to structural steel, followed by stainless.
- Due to material properties of titanium alloy, there is less stress occured.
- However, there isn't change at all when Total Deformation is concerned.