Section Modulus calculation and optimization

Project Title :- Section modulus Calculation & optimization

Objective :- To calculate the section modulus of the hood panel & then optimizing the hood panel for better section modulus.

Introduction:-

• Section Modululs is direct measure of stength of any sectional area of an object about an referance axis like netural axis.
• The Strength can measured directly from section modulus formula and define by below formula
• sectional modulus represented with a Symbol of 'S'.

S= I/Y

Where,

S= Sectional Modulus

I = Moment of Interia

Y = Distance between the netural axis & the extreme end oof an object

• Moment of inertia is high then have higher resistance to deform under certain load ,hence we can say that moment of inertia directly proportional to the strength of the material & strength of the material can be calculated with the help of section modulus.
• if we vary the netural axis towards positive or negative side the overall stength of the body will decrease,because when netural axis line lies on the middle of the section only have higher stength at particular point,so here 'Y' value was inersely proportional to section modulus.

calculate section Modulus of Hood Panel

Here the moment of inertia was calculated by using NX Software obtain value are

Max MOI = 8.65000772X10*5 mm*4

Min MOI = 4.010569213X10*3 mm*4

Total length of 'Y' Value =486.6078mm

Netural axis we need 'Y' Value :- Y/2= 486.6078/2 = 243.3039mm

1) Section Modulus(S) :- I/Y = 865000.772/243.3039

= 3555.22773 mm*3 (Max. Strength)

1) Section Modulus(S) :- I/Y = 4010.56927/243.3039

= 16.4837854 mm*3 (Min. Strength)

Strength of hood varies from 16.4837854 mm*3 to 3555.22773 mm*3

Now, inner panel offsetting outside by 0.5 mm the increasing the cross sectional area,the result shown below:-

I obtained the Value of

Max MOI = 8.575818624X10*5 mm*4

Min MOI = 4.192098043X10*3 mm*4

Total length of 'Y' Value =486.6078mm

Netural axis we need 'Y' Value :- Y/2= 486.6078/2 = 243.3039mm

1) Section Modulus(S) :- I/Y = 857581.862/243.3039

= 3524.73537 mm*3 (Max. Strength)

1) Section Modulus(S) :- I/Y = 4192.09804/243.3039

= 17.2298843 mm*3 (Min. Strength)

Strength of hood varies from 17.2298843 mm*3 to 3524.73537 mm*3

• After Modification i increased sectional area by .5 mmthe value of minimum stength was increased from 16.4837854 mm*3 to 17.2298843 mm*3,hence with increase in cross sectional area result in increase in stength.
• The Strength of the Material also depend upon the composition of material,thickness & cross sectional area of an object.

Conclusion:-

The Strength of the Material is directly proportional to moment of inertia,hence increases in sectional Area there is have increase in overall mass of an object,hence have increases in strength.