Week 1 Stress Concentration on a Plate with hole

• Objective: To study the effect of change in geometry on stress concentration

• Stress concentration: It is the area where on an object where the stress is greater than the surroundings

• Modelling: The geometry is modelled in the spaceclaim as per the dimensions mentioned

• Analysis: The analysis is performed with the mesh size of 1cm and fixed at one end and applied tensile load on the other end of 500N

• Result: The results were complied for both the cases

case 1: Plate with 1 hole at the centre

case 2 Plate with 3 holes 90mm distant from the centre

The results obtained are tabulated below

Case	Description	Max Equivalent stress(Pa)	Max Deformation (m)
1	Plate with centre hole	6.63e5	3.3e-7
2	Plate with three holes	6.38e5	3.18e-7

Discussion

1) As we can see that the induced stresses in case 2 are lesser than the stresses induced in case 1. But the maximum deformation values are almost similar so from design point of view we can choose plate with 3 holes because of maximum factor of safety it provides

2) If we see in the manufacturing point of view the manufacturing time and cost is more for case 2 than case 1. So as the values of deformation are almost the same, to reduce the material wastage and costs it is preferable to choose a plate with single hole than a plate with 3 holes