Question

A cantilever beam AB of length L has fixed support at A and spring support at B.

Answer 1

The force in the spring will be $F =\dfrac{KPl^3}{3EI}$.

The deflection of the beam will be $\rho$ = $0.15(\dfrac{KPL^3}{3EI})$

What is a cantilever beam?

A rigid, horizontally extending structural member known as a cantilever is supported at only one end. Typically, it extends from a solidly affixed flat vertical surface, such as a wall.

Given that:-

• A cantilever beam AB of length L has fixed support at A and spring support at B.
• The spring behaves in a linearly elastic manner with stiffness k. If a concentrated load P is applied at B.

The spring force will be calculated as:-

$F = kx$

Deflection will be given by:-

$x = \dfrac{PL^3}{3EI}$

The spring force will be calculated by:-

$F = \dfrac{KPL^3}{3EI}$

The deflection of the beam will be given as:-

$\rho = \dfrac{0.15KPL^3}{3EI}$

Therefore the force in the spring will be $F =\dfrac{KPl^3}{3EI}$..The deflection of the beam will be $\rho$ = $0.15(\dfrac{KPL^3}{3EI})$

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