Section Modulus calculation and optimization

Aim :

To generate the report on finding the section modulus for the hood design and improving it by 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 design include area for tension and shear, radius of gyration for compression, and moment of inertia and 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 mm³

The difference between of case 1 and case 2 are the varying the distance between of hood inner panel and outer panel

The Distance varying from case 1 to the case 2 are 0.5 mm

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

Conculsion :

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