Poisson’s ratio
E559806
Poisson’s ratio is a fundamental material property in mechanics that quantifies how much a material contracts laterally when stretched or expands laterally when compressed.
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
dimensionless quantity
ⓘ
material property ⓘ mechanical property ⓘ |
| affects |
lateral deformation of beams and rods
ⓘ
volumetric strain under uniaxial loading ⓘ wave propagation speeds in solids ⓘ |
| alsoKnownAs | ν ⓘ |
| appearsIn | Hooke’s law for isotropic materials NERFINISHED ⓘ |
| assumedConstantIn | linear elasticity ⓘ |
| canBe |
negative
ⓘ
positive ⓘ zero ⓘ |
| category | elastic constants ⓘ |
| definedAs | negative ratio of transverse strain to axial strain ⓘ |
| describes |
lateral strain response to axial strain
ⓘ
transverse contraction under longitudinal tension ⓘ transverse expansion under longitudinal compression ⓘ |
| field |
materials science
ⓘ
mechanics ⓘ solid mechanics ⓘ |
| isParameterOf | constitutive models for solids ⓘ |
| mayBeAnisotropicIn | composite materials ⓘ |
| measuredBy |
uniaxial compression test
ⓘ
uniaxial tensile test ⓘ |
| measuredUsing |
digital image correlation
ⓘ
strain gauges ⓘ |
| namedAfter | Siméon Denis Poisson NERFINISHED ⓘ |
| negativeValuesObservedIn | auxetic materials ⓘ |
| positiveValueMeans |
lateral contraction under tension
ⓘ
lateral expansion under compression ⓘ |
| relevantFor |
biomechanics of soft tissues
ⓘ
design of pressure vessels ⓘ geomechanics ⓘ |
| symbol | ν ⓘ |
| typicalRangeForIsotropicSolids | 0 to 0.5 ⓘ |
| typicalValueForCork | close to 0 ⓘ |
| typicalValueForMetals | about 0.3 ⓘ |
| typicalValueForRubber | close to 0.5 ⓘ |
| unit | dimensionless ⓘ |
| upperLimitForStableIsotropicLinearElasticMaterial | 0.5 ⓘ |
| usedIn |
elasticity theory
ⓘ
finite element analysis ⓘ stress–strain analysis ⓘ structural engineering design ⓘ vibration analysis ⓘ |
| usedToRelate |
Young’s modulus and bulk modulus
ⓘ
Young’s modulus and shear modulus ⓘ |
| zeroValueMeans | no lateral strain under axial loading ⓘ |
Referenced by (2)
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