Week 1 Stress Concentration on a Plate with hole

Procedure:

1. For both cases, we use Static structural in Ansys Workbench.
2. We input the required materials and their properties in engineering data.
3. To design the geometry, we use Spaceclaim for both case I & case II.\

Case I 2d Geometry

Case II 2d Geometry

• Now close the Sketch or Geometry (in this case, Spaceclaim)
• Go to Model in Workbench
• Open the mesh tab and mesh the geometry with 2mm( for precise results), and the method of solving used is Tetrahedron element type. Generate the mesh after that by right-clicking on the mesh tab or icon

Meshing of Geometry Case I:

Meshing of Geometry Case II:

• Now define the boundary conditions
• Defining Fixed Support for Case I & Case II

• In the same way, we apply Force to the direction as mentioned in the given data.
• In both cases, it is 500N, the opposite direction to the fixed support.

Case I

Case II

Details on the force applied in both the cases :

• Right Click on the Solutions & select Total Deformation and Equivalent stress for results and solve them.

Total Deformation for Case I

Total Deformation for case II

Equivalent Stress for Case I

Equivalent stress for case II

Results for both cases :

Conclusion:

• From the above results, we can conclude that the plate with one hole (Case I) has more minor deformation than the plate with three holes (Case II)
• Stress levels in Case I are higher than in Case II
• From an analysis point of view, we can say that choosing a plate with one hole is best as it has less minimal stress levels
• From a manufacturing point of view, we can choose a plate with one hole, as it causes less work of application, thus saving total production cost. For example electricity and additional production time. Saving tool life