Project 1 involves using HyperMesh to determine stresses on plates with round and square holes under tensile stress. The plate dimensions are 500mm x 500mm with a 25mm round hole and 25mm x 25mm square hole. A 1kN/m2 tensile stress is applied. Geometry, material properties, meshing, loads, and analysis are created in HyperMesh. For the round hole, maximum principal stress is 2.198x10-3 MPa and maximum displacement is 1.163x10-6 mm. For the square hole, maximum principal stress is 1.68x10-3 MPa and maximum displacement is 1.148x10-6 mm. Stresses are highest at the hole edges

1. PROJECT 1
Determination of the stresses of the plates with round and square holes subjected to
the tensile stress by using HyperMesh
Descriptionof the project:
Given,
Plate dimensions 500mm x 500mm
Radius of the round hole is 25 mm
Dimensions of the square hole is 25mm x 25mm and1mm radius for each corner
Tensile stress: 1kN/m2
Procedure:
Step 1: Geometry is created. Firstly, a component is created for the Plate.
Step 2: Material is created by giving the value of Modulus of elasticity E and poisson's ratio, v.
Steel is taken as a material.
Here E = 210 GPa, v = 0.25
Step 3: Element Property is assigned by giving thickness. Here thickness is 5 mm. PSHELL
element is chosen. Element property should be assigned in the component.
Step 4: Meshis created from 2D AutoMesh. Element property should be assign in the mesh.
Step 5: Load Collectors for constraints and forces should be created from Analysis. Here I have
taken quarter part of the plate because of symmetry.
Step 6: Load Steps is created. Here linear static loading is used. After that run the file.
Step 7: After analysis completion I got the results and graphical representation.
Results:
For Round hole,
Maximum Principal Stress: 2.198x10-3 MPa
Maximum Displacement:1.163x10-6 mm

2. Figure: Graphical representation of results for Principal Stress
Figure: Graphical representation of results for Displacement
For Square hole,
Maximum Principal Stress: 1.68x10-3 MPa
Maximum Displacement: 1.148x10-6 mm

3. Figure: Graphical representation of results for Principal Stress
Figure: Graphical representation of results for Displacement
Conclusion:
I found stress to be maximum at the upper edge of the hole for the both round and
square case. It is because of notch effect. We know due to the notch effect, stress is

4. increased in the area of the structure which has a crack, depression or sharp angle. I
also found maximum displacement at the edge where tensile stress is applied.