Bone Biomechanics

Question 1

What is stress?

Answer 1

force applied per unit area (pressure)

Question 2

what is strain

Answer 2

change in length relative to the original length; deformation

Question 3

what is the y-axis

Answer 3

stress

Question 4

what is the x-axis

Answer 4

strain

Question 5

The slope of the stress-stain curve is called

Answer 5

young’s modulus

Question 6

elastic region

Answer 6

in this region, if the stress is relieved, the material will return to its original shape

Question 7

plastic region

Answer 7

when the stress applied to the material causes much more strain per unti of stress than it did in the elastic region; the material will be somewhat deformed, even after the stress is removed

Question 8

stiffness

Answer 8

resistance to deformation due to applied force; the steeper the slope, the stiffer the material (in elastic region)

Question 9

flexibility

Answer 9

ready deformation with applied force; material with a flatter slope is more flexible

Question 10

brittle

Answer 10

experiences little platic deformation before it fails; breaks easily

Question 11

Ductile

Answer 11

the property of material featuring a large plastic deformation region before it fails; can be drawn out into long, thin shapes

Question 12

strength

Answer 12

high yield point

Question 13

weak

Answer 13

low yield point

Question 14

high toughness

Answer 14

large area under the curve (large energy absoption before failure) (tend to also be strong and ductile)

Question 15

low toughness

Answer 15

low area under the curve