Solid Mechanics

Explain normal stress

• stress which acts perpendicular, or normal to, the cross section of the load-carrying member.

• branch of applied mechanics that deals with the behavior of solid bodies subjected to various types of loading

• is a general term that refers to the capacity of a structure to resist loads.

• The ratio of the actual

  strength to the required strength

Define the meaning of thin wall pressure vessels

• A pressurized sphere is subjected to uniform tensile stresses in all directions

• •vessel having an inner-radius-to-wall-thickness ratio of 10 or 1/10 of the radius of the container

• a closed structure containing liquids or gases under pressure

• Stresses that act tangentially to the curved surface of a shell

Explain shear stress.

• is a load directed along the axis of the member

• section taken perpendicular to the longitudinal axis of the bar

• elongation per unit length

• stress which acts tangent to the cross section of the load-carrying member

Define the meaning of torsion

• the polar moment of inertia of the cross-sectional area

• the outer radius of the shaft

• a moment that twists/deforms a member about its longitudinal axis

• Section the shaft perpendicular to its axis at the point where the shear stress is to be determined

What is the type of this beam

• Cantilevered beam

• Overhanging beam

• Simply supported beam

• Fixed beam