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  1. Home/
  2. Somesh Ruppa/
  3. Section Modulus calculation and optimization

Section Modulus calculation and optimization

Aim To calculate section modulus of hood and optimize the design to have improved 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 / Ymax Where,I = Moment of inertia (mm^4)Y…

    • Somesh Ruppa

      updated on 04 Jan 2023

    Aim

    To calculate section modulus of hood and optimize the design to have improved 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 / Ymax

    Where,
    I = Moment of inertia (mm^4)
    Y = Distance between neutral axes and outermost fiber (mm)

    Steps to calculate section modulus:-

    • Step 1:- Find location of centroid of given cross section.
    • Step 2:- Find moment of inertia about neutral axis (INAINA)
    • Step 3:- Find YmaxYmax from neutral axis.
    • Step 4:- Find elastic section modulus using the formula provided above.

    Moment of inertia is nothing but offering resistance against the moment, bending or twisting. So higher the moment of ineria higher will be its resistance to deform is higher.

     

    Here the sectional modulus of hood design before optimization

    FRONT CRASH :

    ITERATION 1:

     

     

    ITERATION 2:

     

    SECTION MODULUS:

     

    `SIDE CRASH :

    ITERATION 1:

    ITERATION2 :

     

    SECTION MODULUS:

    COMPARISION:

    CONCLUSION

        The inner pannel strength is increased, while changing the geomentrical property of the embose. By considering the above calculation the section modulus value for the design will increase. This results in, that the hood will resist more stress when the external stress increases. While Comparing with first hood design, second hood design will resist more bending stress. 

     

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