Section Modulus calculation and optimization

SECTION MODULUS CALCULATION AND OPTIMISATION

OBJECTIVE

To use the Section from the Hood design and calculate the section modulus and optimize the design to improve the section modulus.

SECTION MODULUS

Section modulus is significant in measuring the strength of a member due to its cross-sectional area. If the section modulus is more, then the load-bearing capacity is also more and resistance to bending is also more.

The formula for section modulus is

S = I/y

S = Section Modulus.

I = Moment of Inertia.

y = distance between the neutral axis and the extreme end of the object.

Section modulus of initial hood design

From the above image, we can infer

I_MIN = 1.421×10⁴ mm4

Y= 440 mm

S=I/y

S= 1.421×10⁴/440

S=32.295 mm³

The section modulus is 32.295 mm³

Section modulus after increasing the gap between the hood inner panel and the hood outer panel by 1 mm

From the above image, we can infer

I_MIN = 1.463×10⁴ mm4

Y= 440 mm

S=I/y

S= 1.463×10⁴/440

S=33.250 mm³

The section modulus is 33.250 mm³

^CONCLUSION

From the above results, it is clear that by increasing the gap between the hood outer panel and the hood inner panel, the section modulus increases. Hence, the resistance to the load increases in case of a crash.