Description of possible causes of "strain"
We know materials which are particularly deformed by the action of a force, e.g. rubber, or particularly little deformation, e.g. steel.
In addition, there are materials which are particularly expansive under the influence of temperature, e.g. aluminum, or very little, such as titanium.
The relationship between strain and its cause is described by material coefficients (often also as a "module", or even as a "constant"):
| material coefficient | Description |
| modulus of elasticity | Describes the relationship between the strain and the mechanical load |
| Thermal expansion coefficient | Describes the relationship between strain and temperature |
| Piezoelectric module | Describes the relationship between the strain and the electric field strength |
| Magnetostrictive module | Describes the relationship between the strain and the magnetic field strength |