Explicit Dynamic Analysis on the Tension and Torsion Test Specimen

Explicit Dynamic Analysis on the Tension and Torsion Test Specimen :

 

Aim :

• To perform Explicit Dynamic Analysis on the Tension and Torsion Test Model.

 

Objective : 

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

 

Figure 1-Tensile Test 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 a Tensile and Torsion 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-Tensile and Torsion 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 the 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 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 :

Case-1

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

 

1) Patch Conforming Method :

 

• Select the model with a solid filter and give the method as tetrahedrons, Which is shown in below Figure 13.

 

Figure 13-Patch Conforming Method.

 

2) (i) Face Sizing 1 :

• Select the corner face of the specimen and change the type to the sphere of influence.
• Switch the Sphere Center to Coordinate System 2.
• Sphere Radius-22 mm.
• Element Size-3 mm.

 

Figure 14-Face Sizing 1.

 

2) (ii) Face Sizing 2 :

• Similarly, do the same thing for Face Sizing 2 also.
• Select the corner face of the specimen and change the type to the sphere of influence.
• Switch the Sphere Center to Coordinate System 2.
• Sphere Radius-22 mm.
• Element Size-3 mm.

 

Figure 15-Face Sizing 2.

 

Figure 16-Final Meshed Model.

 

Case-2 :

 

1) Patch Conforming Method :

 

• Select the model with a solid filter and give the method as tetrahedrons, Which is shown in below Figure 17.

 

Figure 17-Patch Conforming Method.

 

2) (i) Face Sizing 1 :

• Select the corner face of the specimen and change the type to the sphere of influence.
• Switch the Sphere Center to Coordinate System 2.
• Sphere Radius-22 mm.
• Element Size-3 mm.

 

Figure 18-Face Sizing 1.

 

2) (ii) Face Sizing 2 :

• Similarly, do the same thing for Face Sizing 2 also.
• Select the corner face of the specimen and change the type to the sphere of influence.
• Switch the Sphere Center to Coordinate System 2.
• Sphere Radius-22 mm.
• Element Size-3 mm.

 

Figure 19-Face Sizing 2.

 

2) (iii) Face Sizing 3 :

 

Figure 20-Face Sizing 3.

 

2) (iv) Face Sizing 4 :

 

Figure 21-Face Sizing 4.

 

Figure 22-Final Meshed Model.

 

3:4 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 23.

 

 

Figure 23-Give Velocity and Fixed Support.

 

1) Fixed Support :

• While performing the tensile test, One end should be fixed,Select the corner end faces of the specimen and give fixed support,Which is shown in below Figure 24.

 

Figure 24-Defined Fixed Support.

 

2) Displacement :

• Select the one end of the cylindrical face of the specimen and give the displacement, Which is shown in below Figure 25.

 

Figure 25-Defined Displacement to the Model.

 

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 26.

 

Figure 26-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 27 and 28.

 

Figure 27-Requesting Output for Contact.

 

Figure 28-Requesting Outputs for Contact Tool.

• Similarly request the output for the probe.
• The Output requested for the tensile and Torsion Model is shown in Figure 29.
• After requesting all the outputs, Run the Simulation.

 

Figure 29-Required Outputs Requested.

 

• To run the simulation, Right Click on the Solution >> Solve. This is shown in below Figure 30.

 

Figure 30-Solve all the Outputs Requested.

 

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

 

Case-1 Tensile Test [Equivalent Von Misses Stress] :

 

Figure 31-Case 1 Tensile Test Equivalent Von Mises Stress.

 

Figure 32-Case 1 Tensile Test Equivalent Von Mises Stress Simulation Animation.

 

Case-2 Torsion Test [Equivalent Von Misses Stress] :

 

Figure 33-Case 2 Torsion Test Equivalent Von Mises Stress.

 

Figure 34-Case 2 Torsion Test Equivalent Von Mises Stress Simulation Animation.

 

Case-1 Tensile Test [Equivalent Elastic Strain] :

 

Figure 35-Case 1 Tensile Test Equivalent Elastic Strain.

 

Figure 36-Case 1 Tensile Test Equivalent Elastic Strain Simulation Animation.

 

Case-2 Torsion Test [Equivalent Elastic Strain] :

 

Figure 37-Case 2 Torsion Test Equivalent Elastic Strain.

 

Figure 38-Case 2 Torsion Test Equivalent Elastic Strain Simulation Animation.

 

Case-1 Tensile Test [Total Deformation] :

 

Figure 39-Case 1 Tensile Test [Total Deformation].

 

Figure 40-Case 1 Tensile Test [Total Deformation] Simulation Animation.

 

Case-2 Torsion Test [Total Deformation] :

 

Figure 41-Case 2 Torsion Test [Total Deformation].

 

Figure 42-Case 2 Torsion Test [Total Deformation] Simulation Animation.

 

Case-1 Tensile Test Temperature :

 

Figure 43-Case-1 Tensile Test, Temperature (User Defined Result).

 

Figure 44-Case-1 Tensile Test, Temperature Simulation Animation (User Defined Result).

 

Case-2 Torsion Test Temperature :

 

Figure 45-Case-2 Torsion Test, Temperature (User Defined Result).

 

Figure 46-Case-2 Torsion Test, Temperature Simulation Animation (User Defined Result).

 

Results :

 

Cases	Equivalent Von-Misses Stress (MPa)		Equivalent Elastic Strain (mm/mm )		Total Deformation (mm)
	Max.	Min.	Max.	Min.	Max.	Min.
Case-1 (Tensile Test)	612.77 MPa	0. MPa	3.0609e-003 mm/mm	0. mm/mm	18.007 mm	0
Case-2 (Torsion)	560.91 MPa	0. MPa	3.0323e-003 mm/mm	0. mm/mm	19.716 mm	0

 

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