Section Modulus calculation and optimization

Objective: to estimate the section modules of the mid-section of hood and optimise the section to a better value, with the help of catia software.

Section modules:

Section modulus is a geometric property of the cross used for designing beams and flexural members. It does not represent anything physically but it denotes the load carrying capacity of the member.

Higher the section modules, higher is the load carrying

S=I /Y

Which is ratio of moment of inertia of member (I) to the distance of outer fibre from neutral axis (Y).

Section modules of the hood:

the estimated minimum moment of inertia (M1) of the structure is found to be

I = 2.518 x 10^5 mm^4

The distance from neutral axis to outer fibre is found to be 239.74 mm (Y)

Hence the

Section modules (S)= (I)/(Y)

(2.518 x 10^5)/(239.74)=1050.30

New Section modules (S)= (I)/(Y)

(2.854 x 10^5)/(237.74)=1200.47mm^3

result

the section modules of the hood mid-section is improved compared to the previous one by providing a bonus offset between the inner and outer panel section.

The work is done in catia v5 tool.

By this way the load carrying capacity of the hood is also improved.