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structures (Forces (mechanical forces that move machines, pressures of…
structures
Forces
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gravity, which pulls us towards the earth and gives us weigh
forces caused by the effects of heat, etc
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Stresses: The internal tension is called stress. It happens to all bodies sub>ected to
the applying of one or more forces on them.
This depends of
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the characteristics of the loads (intensity, direction, traiectory and
point aplication)
Types of stresses
compression
Forces try to flatten
or compress a body. Opposing forces move inwards towards one another along the same trajectory and in opposite directions The body tends to lose its shape and becomes compressed
bending
Bending stress is the normal stress that is induced at a point in a body subjected to loads that cause it to bend. When a load is applied perpendicular to the length of a beam
traction
Traction is the force parallel to a surface. ... Only the normal component of an applied force create stress.An inclined applied force is resolved into normal force and traction , the normal component creates stress, not the traction component.The stress works in the direction of applied force
Shear or cutting
The forces act hke two scissor blades. they are very close together,
moving in opposite direcuons, as they try to cut an oblect This stress is the same when we put an oblect over the edge of a table
and hit n to try and break it This is also called tensile stress
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Structures
All physical bodies or objets have a structure that enables them to maintam their shape and not break under the forces that act on them