Section Modulus calculation and optimization

Sectional Modulus

Main purpose of this analysis was to get the inertia of the hood and study of sectional modulus and improve it to withstand more load.

It gives the idea of how much the material is resistant to bend/ deformation.

It is the ratio of moment of inertia and distance between the neutral axis and extreme end. S = I/y

S = Section Modulus

I = Moment of Inertia

Y = distance between the neutral axis and the extreme end of the object

As the moment of inertia increases the sectional modulus increases and hence more is the resistant to the bend.

Moment of Inertia of Initial Design

Moment of inertia we got is

Max = 8.10036 e­­­­­⁺⁰⁵ mm⁴

Min = 3.65991 e⁺⁰³ mm⁴

Moment of Inertia of Changed Design

Change in the design to improve the sectional modulus by varying the Y.

For this section we gave another emboss to increase the strength and to increase the moment of inertia

Moment of inertia we got after adding emboss

Max = 1.053413 e­­­­­⁺⁰⁶ mm⁴

Min = 4.166934 e⁺⁰³ mm⁴

So, the inertia is increased, which increases the sectional modulus of the hood panel.

This makes the hood more resistive towards the bend.