Week 1 Stress Concentration on a Plate with hole

1)

	Deformation (mm)	Stress (Mpa)
Case 1	0.00027492	0.605
Case 2	0.00029731	0.581

2) From analysis stand point i would like to pick case 2 model becase as per FEM results the stress value in case 2 model is less than the case 1 model. Second reason for opting case 2 model with respect to weight since i have multiple cutouts in case 2 model there is a weight reduction.

3) From manufacturing stand point i will select case 1 model because in case 2 model i am having multiple holes to drill its a bit time taking to create holes at diffrent location.

4) I have performed a static analysis with 2 cases one is a rectangular plate with a hole at centre and second one is a rectangular plate with multiple holes.

The geometric details of the case 1 as Length=300 mm

Width = 120 mm

Thickness = 30 mm

Hole Dia = 60 mm

The geometric details of the case 2 as Length=300 mm

Width = 120 mm

Thickness = 30 mm

Centre Hole Dia = 60 mm

Small Hole Dia = 30 mm

Distance between centre hole to small holes = 90 mm

Structure steel material has been used for both the cases

The results of static analysis are tabulated below.

	Deformation (mm)	Stress (Mpa)
Case 1	0.00027492	0.605
Case 2	0.00029731	0.581

Conclusion: The result values of both cases are well with in the allowables. Case 2 model would be considerd because of Component weight and stress values are less compared with case 1 model.