Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
|
Load
|
external forces applied to a structure; produces deformation
|
|
|
Stress
|
internal reaction to applied force
|
|
|
Strain
|
relative material deformation reslting from stress
|
|
|
Toe region
|
slack is removed w/ minimal force
|
|
|
elastic region
|
structure returns to its original dimensions
|
|
|
yield point
|
between elastic and plastic regions
|
|
|
plastic region
|
deformation is permanent
|
|
|
ultimate failure point
|
material fails under load.
|
|
|
tensile loading
|
creates tensile stress/strain
|
|
|
`compressive loading
|
creates compressive stress/strain
|
|
|
shear loading
|
result of parallel equal forces in oppo direction
|
|
|
torsion load
|
result of forces applies perpendicular to long axis of structure
|
|
|
bending forces
|
combined tension and compression stresses and strain
|
|
|
Viscoelasticity-
viscosity |
materials resistance to flow; fluid property
|
|
|
viscoelasticity-
elasticity |
material ability to recover after deformartion
|
|
|
Creep
|
material deformation to a maintained;load;
original form regained after load is removed (recovery) |
|
|
rupture
|
failure, tearing, disruption of CT fibers, tendons, ligaments
|
|
|
avulsion
|
tearing off a bony attachment
|
|
|
fracture
|
failure of bony tissue
|
|
|
ligament injury
Grade 1 |
few fibers involved
good chance of tissue recovery |
|
|
ligament injury
Grade 2 |
more fibers, partial tearing;
does not completely recover |
|
|
ligament injury
Grade 3 |
complete rupture, no recovery, possible bone involvement
|
|
|
Bone can withstand greater ____ forces than ________ before failure
|
1. compressive
2. tensile forces |
|
|
ligaments
|
similar to tendons, less tensile strength, but can handle wide range of load direction better than tendons
|
|
|
cartilage- responds well to compressive forces, recovers rapid
|
responds well to compressive forces, recovers rapid due to fluid exudation & imbibtions
|
