Flexural Rigidity of Beam is a Product of

Answer: D – modulus of elasticity and area moment of inertia

Flexural rigidity of beam is a product of modulus of elasticity and area moment of inertia.

Solution: 

From the bending moment equation,

σ/y = M/I = E/R

Flexural rigidity = EI 

Unit of flexural rigidity: Nm²

Where

• E= modulus of elasticity
• I = area moment of inertia

Notes:

1. The bending moment required to produce unit curvature in a beam is given by flexural rigidity.
2. Flexural rigidity describes the resistance provided by a structure when bent.
3. The beam with a higher flexural rigidity has a lower deflection value.

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