Section Modulus calculation and optimization

Section Modulus calculation and optimization

Aim:

To generate the report on finding the section modulus for the hood design and improving it based on the input and increasing the

strength of the hood by using the CATIA V5.

Section Modulus:

It is a geometric property for a given cross-section used in the design of beams or flexural members. Other geometric properties used in

the design includes an area for tension and shear, the radius of gyration for compression, and moment of inertia, and the polar moment of inertia for stiffness.

Any relationship between these properties is highly dependent on the shape.

There are two types of section modulus,

1. The elastic section modulus
2. The plastic section modulus

Section Modulus can be calculated by using the Formula :

S = I / y

Where,

S = Section Modulus

I = Moment of inertia

Y = Distance from the neutral axis to the most extreme end of the object

Distance from the neutral axis to the most extreme end of the object :

Y = 476.375 / 2

= 238.1875 mm

Case: 1

Do apply the finded values in the formula, to find Section Modulus (S) for case : 1

S = I / y

where,

I = 3.275 x 10-007m4

y = 238.1875 mm

S = 3.275 x 10-007m4 / 238.1875 mm

= 1374.96 mm3

Case: 2

Do apply the finded values in the formula, to find Section Modulus (S) for case : 2

S = I / y

where,

I = 3.498 x 10-007m4

y = 238.1875 mm

S = 3.498 x 10-007m4 / 238.1875 mm

= 1468.59 mm3

Result:

Case 1 : S = 1374.96 mm3

Case 2: S = 1468.59 mm3The difference between case 1 and case 2 are the varying distance between of hood inner panel and outer panel

The Distance varying from case 1 to case 2 is 0.5 mm

So, the Moment of inertia has been Increased and the strength of the hood also increased.

Conculsion:

Thus the report has been generated on finding the section modulus for the hood design by using the CATIA V5.