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structures

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In order for a structure to perform as it was

designed to, it must be able to withstand all

the forces that it is subjected to when loaded.

In order to understand how a structure will

behave when loaded it is important to

investigate the forces acting on the external

surface of the structure, and those actinginternally. This section will deal with the

forces found in structures and the effect they

have on the structure.Before you can understand how a structure

will behave when loaded you must first have a

knowledge of the different types of forces thatma be resent in a structure.

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is any influence that causes

a free body to undergo achange in speed, a change

in direction, or a change in

shape.

is an interaction between twoobjects.

is ush or ull can cause

Force

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type of forces

1. COMPRESSION FORCE

2. TENSION / TENSILEFORCE

3. SHEAR FORCE

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Forces push and forces pull,

They cause a change of speed.

To speed things up or slow them downA force is what you need.

Forces twist and forces turn.

They move things round and round.The force that's due to Gravity

Pulls things to the ground

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COMPRESSION / COMPRESS

will cause a member of structure

to be squashed

forces push material particlesagainst each other

the member that is in

compression is called a struta force is applied inward against

the face of a structural element

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SHEAR FORCE

will cause a member to slide/tilt to a

side

when a force is applied in parallel to

the face of a structural element at anangle that is perpendicular to either

compression or tension forces

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will cause a member to be twisted

the deformation caused when one

end of an object is twisted in one

direction and the other end is heldmotionless or twisted in the

opposite direction

the twisting force acting on the

TORSION / TORSIONAL FOR

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