Section Modulus calculation and optimization

AIM

To calculate section modulus of hood and modify the design to improve section modulus.

SECTION MODULUS

Section modulus is a direct measure of a strength of any cross sectional area of an object about an reference axis.

The formula of section modulus is given by,

S=I / Y

Where,

I = Moment of inertia (mm^4)

Y = Distance between neutral axes and outermost fiber (mm)

SECTION MODULUS BEFORE MODIFICATION

MOI (Max): 1.389264630e+08[mm^4]

MOI (Min): 4.377446053e+05[mm^4]

Y=(877/2)=438.5

S=I(min)/Y

=4.377446053e+05[mm^4]/438.5

=43774.46053/438.5

S=99.827mm^3

SECTION MODULUS AFTER MODIFICATION

MOI (Max): 9.134009223e+07[mm^4]

MOI (Min): 2.892210553e+05[mm^4]

Y=(877/2)=438.5

S=I(min)/Y

=2.892210553e+05[mm^4]/438.5

=28922.10553/438.5

S=104.422mm^3

RESULT

Section modulus increases when there is a modification of model is done. So by increasing the section area there is

increase section modulus which results in more strength. Which moment of inertia is directly propotional to strength of

material.