Section Modulus calculation and optimization

SECTION MODULUS OF THE HOOD

Objective: To find the section modulus of the hood and optimisation to improve the overall section modulus.

Section Modulus: The section modulus (S) is geometric property of the cross section used for designing beams and flexural members. It does not represent anything physically.

Formula of Section Modulus: It may be defined as the ration of total moment resisted by the section to the stress in the extreme fibre which is equal to yield stress.

There fore

S = I/Y, Where

S = Section modulus (mm^3)

I = Moment of Inertia of the section about the bending axis. (mm^4)

Y = Distance between the neutral axis and extreme end of the object (mm)

Calculation:

CASE 1: Before Optimization

The Hood which was already created is imported and the section inertia analysis is done.

We have to make sure that the curve obtained is a single/closed curve.

S = I/Y

I = MOI (min) value is considered

Y = Total distance /2, Total distance = 943.768mm

Y = 943.768 / 2

= 471.884 mm

Therefore, S = 6000 mm^4/471.884 mm

S = 12.714 mm^3