Week 8 Worm Gear Challenge
AIM:
To simulate the Worm gear for their total deformation,stress and strain using ansys workbench.
OBJECTIVES:
For this challenge, you will have to perform a transient structural analysis on a worm gear assembly. For the academic version, you need to cut the gear by half so as to bring the model within limits. For the challenge, you have to rotate the worm so as to get to almost end of the half cut and get results for Equivalent stress, Equivalent elastic strain and the total deformation in the model.
PROCEDURES:
- Drop the Transient structural from the analysis settings.
- Allocate the required material from the engineering data.
- Then import the geometry, then open the model.
Materials:
Structural steel
Geometry:
- First change the default name to WORM AND GEAR.
- Assign the selected material for geometry parts.
- Then change the stiffness behavior is a Rigid, for barrel and barrel cam.
Connections
- Select a contact and right click rename based on contact.
- Then select more target face in the gear.
- Then select the gear and make frictionless.
- Now insert the body to ground revolute joint and select to the gear.
- Then insert the body to ground revolute, select the worm gear and apply.
Mesh:
- Now open the mesh, use default size.
- In details, use adaptive sizing is yes. Generate mesh.
Boundary conditions:
- Now transient structural, insert the joint load.
- Joint in revolute - Ground to Gear and type is rotation and magnetuide is tabular data.
1st step
Total No.of. Steps =15
Auto time stepping = ON
Defined by = Time
Initial time = 0.2
Minimum time=0.2
Maximum time= 0.5
Large Deflection = ON
Weak spring = Program controlled
Output controlls = Make all outputs yes
2-15 steps
carry over time = ON
Initial time = 0.2
Minimum time=0.2
Maximum time= 0.5
Large Deflection = ON
Weak spring = Program controlled
Output controlls = Make all outputs yes
Soluitions:
- After giving proper boundary conditions,create desired solutions for output results,create solutions for total deformation, stress and strain. slove evaluate for solutions.
RESULTS:
Total Deformation And Graph
Equivalent Strain And Graph
Equivalent Stress And Graph
CONCLUSION:
To simulate the Worm gear is runned successfully, structural steel material was used in this case. Total Deformation is 7.2599mm, Equivalent stress is 971.48MPa and Equivalent starin is 5.3044e-003mm/mm .