+
Related Flashcards
Related Topics
Cards In This Set
| Front | Back |
|
General properties of biological tissues( 3)
|
1. force-displacement
2. viscoelasticity 3. ligament and tendon |
|
Biomechanical properties of tissue (4)
|
1. injury
2. healing 3. exercise/treatment 4. influence of aging |
|
- what loads
- fast vs. slow loading |
Injury
|
|
Ligament strength during recovery from injury
|
Healing
|
|
- which exercise places greatest load on tissue
- reqruirements for tissue replacement |
Exercise/treatment
|
|
Load deformation curve regions/points (3)
|
1. elastic region
2. plastic region 3. ultimate failure point |
|
- how much will a material stretch for a given load
|
Force-displacement curve
|
|
Elongation vs. load/force
|
Force-displacement curve
|
|
- most basic piece of information
- demonstrates stiffness - depends on the size of tissue being tested (problem) |
Force-displacement curve
|
|
What are it's mechanical properties
- measure initial length - hang a weight, force - measure new length - change in length - plot force and change in length on graph - add more weight - measure new length |
Force-displacement curve
|
|
Relationship between force applied and displacment (elongation, compression)
|
Force-displacement curve
|
|
The greater the slope of the line, the _______ the siffness of the material (Force-displacement curve)
|
Greater
|
|
More stiff = ______ force to deform the same amount
|
Greater
|
|
More stiff = same force deforms _____
|
Less
|
|
A non-linear force-displacement curve = slope/stiffness _______
|
Changes
|
