Explicit Dynamic Analysis on the Machining Planer Model

Explicit Dynamic Analysis on the Machining Planer

Aim :

• To perform Explicit Dynamics Analysis on the Machining Planer.

Objective :

• To define appropriate materials for the Machining Planer Model.
• To define connections between them.
• To perform mesh on the Machining Planer Model.
• To define appropriate Boundary Conditions to the Model.
• To request outputs for Total Deformation, Von-Mises Stress, Equivalent Elastic Strain.

Figure 1-Machining Planer Animation.

Procedure :

Phase 1- Material Set-Up :

• To set up the material for the Worm Gear Model. First, drag and drop the transient structural analysis workspace into the project schematic from the analysis system. This is shown in below Figure 2.

Figure 2-Ansys Workbench Workspace.

• After deploying the Explicit Dynamic analysis system in the project schematic workspace.
• Define the Engineering Data and geometry, To define the Geometry and Engineering Data, Right Click on the Engineering Data and click to edit, it will take to the Engineering Tab.
• There Right Click on the Material Tab, A window will Pop-Up stating Engineering data sources.
• Click on the Engineering Data Sources, There go and select the material to define the engineering data. This is shown in Figure 3,4,5.

Figure 3-Right Click on the Engineering Data.

Figure 4-Right Click on the Material Tab.

Figure 5-Select the Structural Steel and Steel 1006 as Material to define the Model.

Phase 2-Geometry Set-Up :

• Next set up the geometry. To set up the geometry, Right-Click on the Geometry option >> Import Geometry. This is shown in below Figure 6.

Figure 6-Importing Geometry.

Figure 7-Selecting the Geometry to Import.

• Next double click on the geometry to check, Whether the model imported, is Machining Planer Model or not. Space Claim Workspace will open. The model will be imported in the space claim, Which is shown in below Figure 8.

Figure 8-Machining Planer Model in the Space Claim.

Phase 3-Model Set-Up :

• Next, define the model, Double click on the model, The Mechanical Workspace will open, There go and define the material, set up the load case for the model.
• The Model loaded in the mechanical workspace is shown in below Figure 9.

Figure 9-Model Loaded in Mechanical Workspace.

3:1 Assign Material :

• Next, define the material as Steel 1006 for the Workpiece Model which is shown in below Figure 10.
• To assign a material, Click on the Geometry >> Select Workpiece Model >> Parameter Window >> Assignment >> Steel 1006.
• The mechanical properties of the material are shown in below Figure 11 and 12.

Figure 10-Assign Material to the Workpiece Model.

Figure 11-Mechanical Properties of Structural Steel.

Figure 12-Mechanical Properties of Steel 1006.

3:2 Define Connections :

• Here for explicit dynamics, The connection will be the Body-Interaction connection, This is only suitable for Explicit Dynamics.
• Within an Explicit Dynamics analysis, the body interaction feature represents the contact between bodies and includes settings that allow you to control these interactions.
• If the geometry you use has two or more bodies in contact, a Body-Interaction object folder appears by default under Connections in the tree. Included in a Body Interactions folder are one or more body-Interaction objects, with each object representing a contact pair.

3:3 Meshing :

• After defining the connections, We have to define mesh for the Machining Planer Model.
• Mesh the model with default element size with tetrahedral elements, Which is shown in below Figure 13.

1) Patch Conforming Method :

Figure 13-Patch Conforming method for WorkPiece.

2) Edge Sizing :

• We will be giving edge sizing to get the results accurate.
• Select the corner four edges and generate the mesh.

Figure 14-Edge Sizing.

Figure 15-Final Meshed Model.

3:4 Analysis Settings :

• Here for this Machining Planer Model, No of steps given for this simulation is 1.

Figure 16-Analysis Settings.

3:5 Boundary Conditions :

• After giving some parameters in the analysis settings, We have to give boundary conditions.
• Here we have to create two boundary conditions, We have to give Velocity and Fixed Support.
• To give Joint Rotation, Right Click on the Explicit Dynamics >> Insert >> Velocity, Fixed Support. This is shown in below Figure 17.

Figure 17-Give Velocity and Fixed Support.

1) Fixed Support :

• Select the workpiece bottom face and give the fixed support which is shown in below Figure 18.

Figure 18-Fixed Support Given for the Machining Planer Model.

2) Velocity :

• Select the cutting tool with a solid filter and give the velocity as 20,000 m/s along X-Direction, Which is shown in below Figure 19.

Figure 19-Velocity Given for the Cutting Tool.

Phase 4-Request for the Outputs :

• Here we have to request outputs for the VonMisses Stress, Strain, and for Total Deformation.
• To request Output for Stress,Right Click on the Solution >> Insert >> Stress >> Equivalent Von Misses Stress.
• To request Output for Strain,Right Click on the Solution >> Insert >> Strain >> Equivalent Von Misses Strain.
• To request Output for Total Deformation,Right Click on the Solution >> Insert >> Deformation >> Total Deformation.
• This is shown in below Figure 20.

Figure 20-Requesting Outputs for the Stress, Strain, and Deformation.

• Next request output for the contact.
• To request Contact Tool >> Right Click on the Solution >> Insert >> Contact Tool >> Pressure >> Status,Which is shown in below Figures 21 and 22.

Figure 21-Requesting Output for Contact.

Figure 22-Requesting Outputs for Contact Tool.

• Similarly request the output for the probe.
• The Output requested for the Machining Planer is shown in Figure 23.
• After requesting all the outputs, Run the Simulation.

Figure 23-Required Outputs Requested.

• To run the simulation, Right Click on the Solution >> Solve. This is shown in below Figure 24.

Figure 24-Solve all the Outputs Requested.

• After solving the outputs requested, the simulation results for all two cases are shown below Figures.

Case-1 [Equivalent Von Misses Stress] :

Figure 25-Case-1 Equivalent Von-Misses Stress.

Figure 26-Case-1 Equivalent Von-Misses Stress Simulation Animation.

Case-2 [Equivalent Von Misses Stress] :

Figure 27-Case-2 Equivalent Von-Misses Stress.

Figure 28-Case-2 Equivalent Von-Misses Stress Simulation Animation.

Case-1 [Equivalent Elastic Strain] :

Figure 29-Case-1 Equivalent Elastic Strain.

Figure 30-Case-1 Equivalent Elastic Strain Simulation Animation.

Case-2 [Equivalent Elastic Strain] :

Figure 31-Case-1 Equivalent Elastic Strain.

Figure 32-Case-2 Equivalent Elastic Strain Simulation Animation.

Case-1 [Directional Deformation] :

Figure 33-Case-1 Directional Deformation.

Figure 34-Case-1 Directional Deformation Simulation Animation.

Case-2 [Directional Deformation] :

Figure 35-Case-2 Directional Deformation.

Figure 36-Case-2 Directional Deformation Simulation Animation.

Results :

Cases	Equivalent Von-Misses Stress (MPa)		Equivalent Elastic Strain (mm/mm )		Directional Deformation (mm)
	Max.	Min.	Max.	Min.	Max.	Min.
Case-1 (20000 m/s)	439.72 MPa	2.4168 MPa	2.3905e-003 mm/mm	0. mm/mm	26.756 mm	-12.484 mm
Case-2 (15000 m/s)	660. MPa	1.7463 MPa	3.1343e-003 mm/mm	0. mm/mm	26.147 mm	-22.076 mm

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