Mechanical Properties of solid

Mechanical Properties of solid

Introduction : In our daily life , we have seen various types of bridges used for crossing a river. We have seen a crane lifting a heavy weight with the help of a thick wire. The beam is used in the construction of various types of houses. Pillars are used for construction of high skyscrapers in modern cities. This is possible only because of mechanical properties of solid.

Photo by Slava Abramovitch on Unsplash

Parameters related to Mechanical properties of solid

Deformation : Change in shape and size of a body is called as deformation.

Deforming Force : The force which bring change in the shape of a body is called as deforming force.

Elasticity: The property of a solid due to which it regains its original shape and size after removal of deforming force is called as elasticity. These material is called as elastic material.

Plasticity :  The property of a solid due to which it can not regains its original shape and size after removal of deforming force is called as plasticity. These material is called as plastic material.

In order to understand Mechanical properties of a body, We must understand the concept of stress and strain.

Stress: Stress is defined as restoring force per unit cross section area. Or Stress can be defined as  force applied per unit cross section area.

Mathematically,

 Stress = Force applied / Cross section area

SI unit of stress is  N/m² or Pascal (Pa)

Dimension : [L^-1 M^-1 T ^-2]

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