Question 1

How does the beam configuration affect deflection?

Accepted Answer

The beam configuration defines boundary conditions. Simply supported beams are free to rotate at the ends. Cantilever beams are fixed at one end and free at the other, resulting in higher deflections. Fixed-fixed beams are rigidly clamped at both ends, which significantly reduces peak deflections by restricting rotations.

Question 2

What is the flexure formula for bending stress?

Accepted Answer

The maximum normal bending stress is calculated using the formula σ = M_max * c / I, where M_max is the maximum bending moment, c is the distance from the neutral axis to the extreme fiber, and I is the area moment of inertia.

Question 3

What is Young's Modulus (E) and Moment of Inertia (I)?

Accepted Answer

Young's Modulus (E) is a material property that measures stiffness (elastic resistance to deformation). The Area Moment of Inertia (I) is a geometric property of the beam's cross-section that measures its resistance to bending based on shape.

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