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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Poisson's ratio | 2 |
| Poisson’s ratio canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5973629 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Poisson’s ratio Context triple: [Siméon Denis Poisson, notableWork, Poisson’s ratio]
-
A.
Young's modulus
Young's modulus is a fundamental mechanical property that measures the stiffness of a material by quantifying the relationship between stress and strain in the elastic deformation region.
-
B.
Lorentz–Lorenz equation
The Lorentz–Lorenz equation is a fundamental relation in optics and electromagnetism that connects a material’s refractive index to its molecular polarizability and density.
-
C.
Dulong–Petit law
The Dulong–Petit law is an early empirical rule in thermodynamics stating that many solid elements have approximately the same molar heat capacity at high temperatures.
-
D.
Timoshenko beam theory
Timoshenko beam theory is a refined structural model that accounts for both shear deformation and rotational inertia in beams, providing more accurate predictions of their behavior than classical Euler–Bernoulli beam theory, especially for short or deep beams.
-
E.
Cauchy stress tensor
The Cauchy stress tensor is a fundamental concept in continuum mechanics that mathematically represents the internal distribution of forces (stresses) within a deformable material at a point.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Poisson’s ratio Target entity description: 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.
-
A.
Young's modulus
Young's modulus is a fundamental mechanical property that measures the stiffness of a material by quantifying the relationship between stress and strain in the elastic deformation region.
-
B.
Lorentz–Lorenz equation
The Lorentz–Lorenz equation is a fundamental relation in optics and electromagnetism that connects a material’s refractive index to its molecular polarizability and density.
-
C.
Dulong–Petit law
The Dulong–Petit law is an early empirical rule in thermodynamics stating that many solid elements have approximately the same molar heat capacity at high temperatures.
-
D.
Timoshenko beam theory
Timoshenko beam theory is a refined structural model that accounts for both shear deformation and rotational inertia in beams, providing more accurate predictions of their behavior than classical Euler–Bernoulli beam theory, especially for short or deep beams.
-
E.
Cauchy stress tensor
The Cauchy stress tensor is a fundamental concept in continuum mechanics that mathematically represents the internal distribution of forces (stresses) within a deformable material at a point.
- F. None of above. chosen
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
ⓘ
linked to:
Theory of Elasticity
|
| 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 ⓘ |
| 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 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Poisson’s ratio Description of subject: 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.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.