Eccentric bolt-group shear API

Combines direct shear (load/N) with the moment-induced secondary shear distributed by distance from the group centroid, returning the resultant on the critical farthest bolt. Answers 'Which bolt in my pattern is worst-loaded under an eccentric force?', 'What is the peak bolt shear?'.

Price$0.06per request

MethodPOST

Route/v1/engineering/bolt-group-shear

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

fastenerbolt-patternsheareccentricbolt-groupcentroidconnectionmachine-design

API URLhttps://x402.hexl.dev/v1/engineering/bolt-group-shear

Integration docs

Example request

{
  "loadN": 10000,
  "eccentricityM": 0.2,
  "boltRadiiM": [
    0.1,
    0.1,
    0.1,
    0.1
  ]
}

Example response

{
  "boltCount": 4,
  "primaryShearPerBoltN": 2500,
  "momentNm": 2000,
  "secondaryShearMaxBoltN": 5000,
  "resultantWorstCaseN": 7500,
  "resultantVectorN": 5590.17,
  "sumRadiiSquaredM2": 0.04,
  "criticalRadiusM": 0.1,
  "formula": "V' = F/N, V'' = (F·e)·r_max/Σr², resultant = vector sum",
  "interpretation": "Size bolts to the resultant on the farthest bolt; eccentricity amplifies the corner bolts."
}

Input schema

{
  "type": "object",
  "required": [
    "loadN",
    "eccentricityM",
    "boltRadiiM"
  ],
  "properties": {
    "loadN": {
      "type": "number",
      "examples": [
        10000
      ]
    },
    "eccentricityM": {
      "type": "number",
      "examples": [
        0.2
      ]
    },
    "boltRadiiM": {
      "type": "array",
      "items": {
        "type": "number"
      },
      "description": "radial distance of each bolt from the centroid (m)",
      "examples": [
        [
          0.1,
          0.1,
          0.1,
          0.1
        ]
      ]
    }
  }
}

Output schema

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