mechanisms Flashcards
whats rotary motion
turning in a circle
what is linear motion
movement in a straight line
what is reciprocating motion
backwards and forwards motion
what is oscillating motion
swinging backwards and forwarding in an arc
what are static forces
something that isn’t moving and has a total downwards force.
what are dynamic forces
the structure does move and forces applied can be varied.
what are bending forces
structures that carry loads of force across their length are subject to bending forces.
what is a shear force
shear forces is tearing or cutting forces affecting structures.
what are torsion forces
turning or twisting a structure or piece of material.
what are compression forces
act on opposing side of the same object effectively trying to squash the object.
what are tension forces
when structures are being pulled apart.
what is the gear called thats inbetween 2 other gears
idler gear
whats an compound gear
a gear with two gears next to each other and then one gear on the side of one of the gears
whats a worm and wheel gear
a gear that makes large speed reductions
whats a rachet and pawl gear do
thae rachet will stop the gear from rotaing the other way
