MATERIAL MECHANICS TERMS

Question 1

force pushing a material or structure more tightly together

Answer 1

compression

Question 2

stress on a material or structure produced by a pull of forces causing extension or separation

Answer 2

tension

Question 3

stress on a material or structure causing one material or structure to slide over another material or structure

Answer 3

shear

Question 4

force generated in a substance of a material in response to a load

Answer 4

stress

Question 5

degree of deformation of matter as a result of a load put on it

Answer 5

strain

Question 6

based on a materials ability to return to its original shape after a load has been supplied

Answer 6

elasticity deformation

Question 7

is a measure of how much the material deforms and remains deformed after a stress is applied

Answer 7

plasticity deformation

Question 8

states that as stress increases so does strain

Answer 8

hooks law

Question 9

the point where the load on a material causes the material to submit or lose resistance to the load

Answer 9

yield point

Question 10

the point when a material in response to a load deforms to the point when it no longer performs normal function

Answer 10

failure point

Question 11

not having properties the same in all direction

Answer 11

anisotropic

Question 12

these are the most resistance to compression forces or loads

Answer 12

compression

Question 13

second most resistant to tension forces or loads

Answer 13

tension

Question 14

bones are the least resistant to shear forces or loads

Answer 14

shear

Question 15

called concentric loads and straight down at the center of the column causing compression

Answer 15

direct column

Question 16

peripheral loading outside the center of the column causing shearing or tension forces resulting in the column having decreased ability to support the weight or force

Answer 16

eccentric column

Question 17

this resists bending and ends are not secure

Answer 17

beam

Question 18

this law states there is an interdependence between the form and function of the human body

Answer 18

wolff’s law

Question 19

soft tissue will adapt to stresses and strains placed on it

Answer 19

davis’ law

Question 20

name this electric current

results in resorption of bone, convex stress or tension on bone result in bone resorption

Answer 20

positive current

Question 21

name this electric current

results in osteogenesis in bone, concave stress of compression on bone cause new bone formation

Answer 21

negative current

Question 22

name this muscle contraction

shortening of muscle

Answer 22

compression

Question 23

name this muscle contraction

pull of muscle

Answer 23

tension