Theory of Structures - Engineering

Q1:

The assumption in the theory of bending of beams, is :

A material is homogeneous

B material is isotropic

C Young's modulus is same in tension as well as in compression

D each layer is independent to expand or to contract

E all the above.

ANS:E - all the above.

The Young's modulus (E) is a property of the material that tells us how easily it can stretch and deform and is defined as the ratio of tensile stress (σ) to tensile strain (ε).

Where stress is the amount of force applied per unit area (σ = F/A) and strain is extension per unit length (ε = dl/l).