Section Modulus calculation and optimization

SECTION MODULUS AND OPTIMIAZTION

AIM:

use the section of hood and calculate the section modulus by using given formula.

PROCEDURE:

step1:

create the datum plane of your hood

step2:

then make intersection curves by using intersection curve option.

step3:

and hide the remain parts except intersection curve and make sketch and make some changes in intersection curve and use section of inertia analysis. because the section should be closed section thats reason

we make some join in sketch.

step4:

after finish sketch use section inertia analysis option to known the moment of inertia .

section:1

type: hollow

CG:(-0.000000000,747.9078223550,928.498001588)[mm]

MOI(MAX):8.351940112e+05[mm4]

MOI(MIN):7.856822652e+03[mm4]

principal driections:

max:(0.000000000,0.978249046,0.207433853)

min:(0.000000000,-0.207433853,0.978249046)

section length:2.074567829e+03mm

section area:41.488125162[mm2]

moment of inertia=7.856822 let y=?

step5:

how to calculate Y= DISTANCE SECTION FROM THE NEUTRAL AXIS.

BY using measure y=478.9mm

calculation:

section modulus= i/y

= 7.85682/239.45

section modulus of inertia =0.032811mm3

step6:

let make some changes in pervious sketch whichwe have offset the curve in 0.5mm

and join the curve

section:2

type: hollow

CG:(-0.000000000,747.642762400,928.569938137)[mm]

MOI(MAX):8.350546392e+05[mm4]

MOI(MIN):8.099886651e+03[mm4]

principal driections:

max:(0.000000000,0.978230814,0.207519815)

min:(0.000000000,-0.207519815,0.978230814)

section length:2.074402899e+03mm

section area:41.484805692[mm2]

section modulus of inertia =8.0998866/239.45=0.033826mm3

CONCLUSION:

• In the two sections We take the minimum of inertia moment to analyze the minium limit of hood deformation thus ths section modulus of the front hood was calculated and compared with the new design.it give a better section modulus and helps in increasing the strength of hood.