Definitions Flashcards
A quantity having magnitude only
Scalar
Scalar examples
- Temperature
- Speed
- Pressure
A quantity possessing magnitude and direction
Vector
A general term for all quantities
Tensors
A pair of equal and opposite parallel forces acting across a distance thus producing torque or moment
Couple
State where the net sum of all forces acting on an object equals zero
Equilibrium
Movement along an axis
Translation
Movement around an axis
Torque
The plot of Stress (y axis) vs Strain (y axis) representing the mechanical behavior of a material
Stress-Strain Diagram
The rate of change of deformation per unit length over time
Strain Rate
The rate of load/force per unit area over time
Stress Rate
Loss of energy, exhibited by viscoelastic materials, when they are subjected to loading and unloading cycles
Hysteresis
When is elastic hysteresis more pronounced?
Loading/unloading is done quickly (don’t overthink it)
The deformation of a viscoelastic material when it is subjected to a constant load
Creep
Property of a material to resist deformation
Stiffness
The ability to resist failure
Strength
A contraction in which the muscles shorten while generating force
Concentric
“I lift things up and I put them down”
A contraction in which the muscle elongates while under tension. This is due to an opposing force generated by the muscle.
Eccentric
“I lift things up and I put them down”
The change in shape of an object resulting from an applied force
Deformation
