Poisson lateral strain API

Computes lateral strain −ν·εaxial, volumetric strain εaxial(1−2ν) and the transverse dimensional change from axial strain (or axial stress and E). Answers 'How much does my bar neck laterally when stretched?', 'What is the volume change under uniaxial load?'.

Price$0.04per request

MethodPOST

Route/v1/engineering/poisson-lateral-strain

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

materialpoisson-ratiolateral-strainvolumetric-strainaxial-strainelasticityneckingmachine-design

API URLhttps://x402.hexl.dev/v1/engineering/poisson-lateral-strain

Integration docs

Example request

{
  "poissonRatio": 0.3,
  "axialStrain": 0.001,
  "transverseDimensionMm": 50
}

Example response

{
  "axialStrain": 0.001,
  "lateralStrain": -0.0003,
  "volumetricStrain": 0.0004,
  "poissonRatio": 0.3,
  "formula": "εlat = −ν·εaxial, εvol = εaxial·(1 − 2ν)",
  "interpretation": "A bar stretched axially necks laterally by ν times the axial strain; volume rises unless ν=0.5.",
  "transverseChangeMm": -0.015,
  "newTransverseDimensionMm": 49.985
}

Input schema

{
  "type": "object",
  "required": [
    "poissonRatio"
  ],
  "properties": {
    "poissonRatio": {
      "type": "number",
      "examples": [
        0.3
      ]
    },
    "axialStrain": {
      "type": "number",
      "examples": [
        0.001
      ]
    },
    "axialStressMpa": {
      "type": "number",
      "examples": [
        200
      ]
    },
    "youngsModulusGpa": {
      "type": "number",
      "examples": [
        200
      ]
    },
    "transverseDimensionMm": {
      "type": "number",
      "examples": [
        50
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}