Section Modulus calculation and optimization

SECTION MODULUS OF HOOD

section modulus is termed as the ratio of second moment of area and distance from N.A (Neutral axis) to the extreme fiber. Also it is the measure of strength of given member.

Neutral Axis plane- ZY plane

S = Section Modulus

I = Moment of Inertia

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

for Initial Hood design

y = 431.5mm

Max MOI- 4.637177310e+006 mm4 = 4637177.31

Min MOI- 1.343127270e+004 mm4= 13431.2727

section modulus ,S = I/y

taking Min MOI

= 13431.2727/431.5

=31.127 mm3

After Hood design modifications,

Max MOI- 4.706881366e+006 mm4 = 4706881.366

Min MOI- 1.364686572e+004 mm4=13646.86572

section modulus ,S = I/y

taking Min MOI

=13646.86572/431.5

=31.63mm3

Changes Done:

The gap between Outer panel and Inner panel has been reduced , tis induced the increase in section modulus,Thus the strength of Hood increase as well.