Section Modulus calculation and optimization

AIM:To calculate the section modulus of the hood panel for brtter section modulus.

Ssection modulus:

Section modulus is a geomentric property for a given cross-section used in the desing of beams of flexural members.Other

geomentric properties used in the desing include an area for tension and shear,The radius of gyration for compression,and

66moment of intertia for stiffness.Any relationship between this properties is highly dependent on the shape in question.

It is termed at the ratio of the second movement of intertia and distance from N.A(Neutral axis) to the extreme fiber.also it

is the measure of the strength of a given member.The stress in the outermost section of the beam is computed with the help

ofsection modulus,. It is indicated by S.

Section modulus is indicated as follow:

S=I\Y

S=Section modulus

I=Movement of intertia

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

First analyse the base section

Where,

max mol=8.430413415e+05[mm4]

min mol=7.189357614e+03[mm4]

h=491.3 , y =H/2 :Y=245.65

section modulus S=I\Y

For first analysis of min mol s=lmin/y

=7189.35614/245.65

=29.2666mm3

AFTER DESIGN MODIFICATION(by inwardly offsetting the inner hood curves at a distance of 0.5mm)

max mol =8.344567585e+05mm4

min mol =7.423627840e+03mm4

max mol s=lmax/y

=834456.7585/245.65

=3396.9336mm3

min mol s=lmin/y

=7423.627840\245.65

=30.2203mm3

After desing modification section modulus has been increased this indicated the strength of the hood has been increased.