Week 8 Worm Gear Challenge

Objective : To setup the simulation of the given worm gear mechanism to obtain the desired results.

Setting up the simulation


To set up the simulation, first we need to import all the required material cards such as Structural Steel
The below materials can be found in the General materials library.

Importing geometry :
Next we import the geometry and rename them as Worm and Ring


Material definition : Structural Steel

Then we will open Ansys mechanical to set up the rest of the simulation.

Contacts : Next we create the frictionless contact to facilitate movement of the WOrm gear mechanism in the appropriate manner.

Joints : Next we will create 2 revolute joints, one for the ring and one for the worm.

Mesh : Next we mesh the components.
A default mesh is applied to the components.








Analysis Settings :
Next we go to analysis settings to set up the kinematics of the simulation
The analysis is run for 15 steps using the following conditions. All the steps are chosen and the following criteria are entered as shown below.

Joint-Loads :
A joint load is applied to the ground to worm revolute joint in angular increments as shown below.

Output Parameters : The following parameters are selected for output from the simulation.

The equivalent stress, equivalent elastic strain and directional deformation are selected as output parameters.



Running the simulation :
Next we run the simulation. The simulation takes about 10 minutes to run as we can see from the runtime below.



Post-processing :

Total Deformation :

A total deformation of 8 mm occurs in the ring gear.

Equivalent Stress :

A maximum stress of 1050.5 Mpa occurs in the ring gear.

Equivalent Elastic Strain :

A peak equivalent strain of 0.006296 mm occurs in the ring gear.

Conclusion :

Hence the simulations have been run as per the desired criteria and the results have been obtained.

Result : File cannot be attached. Attaching google drive link.
Worm_gear