Bolted-joint load sharing API

Splits an external tensile load between bolt and members via the joint stiffness constant C, returns bolt load, member load, the separation load, and yield/separation factors of safety. Answers 'How much of the external load does the bolt actually see?', 'At what load does the joint gap?'.

Price$0.06per request

MethodPOST

Route/v1/engineering/bolted-joint-load

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

fastenerboltjointstiffness-constantseparationpreloadload-sharingmachine-design

API URLhttps://x402.hexl.dev/v1/engineering/bolted-joint-load

Integration docs

Example request

{
  "preloadN": 10000,
  "externalLoadN": 4000,
  "stiffnessConstantC": 0.25,
  "proofStrengthMpa": 600,
  "tensileStressAreaMm2": 84.27
}

Example response

{
  "boltLoadN": 11000,
  "memberLoadN": 7000,
  "separationLoadN": 13333.333,
  "stiffnessConstantC": 0.25,
  "jointIntact": true,
  "formula": "Fb = Fi + C·P, Fm = Fi − (1−C)·P, separation at P = Fi/(1−C)",
  "interpretation": "If external load exceeds the separation load the joint gaps and the bolt sees the full load.",
  "proofLoadN": 50562,
  "loadFactorYield": 40.562,
  "separationFactor": 3.3333
}

Input schema

{
  "type": "object",
  "required": [
    "preloadN",
    "externalLoadN"
  ],
  "properties": {
    "preloadN": {
      "type": "number",
      "examples": [
        10000
      ]
    },
    "externalLoadN": {
      "type": "number",
      "examples": [
        4000
      ]
    },
    "stiffnessConstantC": {
      "type": "number",
      "description": "kb/(kb+km), 0..1 (default 0.25)",
      "examples": [
        0.25
      ]
    },
    "proofStrengthMpa": {
      "type": "number",
      "examples": [
        600
      ]
    },
    "tensileStressAreaMm2": {
      "type": "number",
      "examples": [
        84.27
      ]
    }
  }
}

Output schema

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