science term 2 test 1 Flashcards
static load vs. dynamic load
static load= load that doesn’t move or change
dynamic load=load that moves and/or changes
Internal force vs. external force
Internal force= acts from within structure
external force= acts on structure from outside structure
form vs. function
form= Shape size and material of structure eg. soccer ball= round filled with air
Function= structures purpose eg. soccer ball= to kick around in order to play soccer
what strategies are used by engineers to ensure that structures are safe
sensors and load design (maximum load warning)
what is the function of symmetry in structures
makes a structures stability and center of gravity are stronger
force
a push or pull that can make an object start or stop moving
Internal force
one part of a structure is creating force on other parts
(shear,torsion, compression, tension)
External force
acts on a structure from outside
shear
a force that pushes in opposite directions
torsion
a force that twists an object
tension
a force that pulls/stretches an object
compression
a force that squeezes an object
sensor
a device that detects/measures a conditon
symmetry
a structures sides are identical
aesthetics
how something looks
static load
a load that stays the same
dynamic load
a load that changes
line of symmetry
a line where both sides are the same on either side
suspension bridge
uses cables from a tall structure to support the load
beam bridge
a horizontal bridge supported by piers
arch bridge
uses a semicircle shape to support load
truss bridge
has a base made from triangles
form
the shape size and materials of a structure
function
a structures purpose
form follows function
a structures purpose should be determined before how something looks
Frame structure
Relies on framework arrangement that’s made from connected parts
Eg. house
Solid structure
Made from one piece of solid material
