davide
4a2e3f8389
Full R0-R13 calculation engine with: - Guided data collection (N bolts, per-bolt load, DA_prime, thermal dT) - Auto-sizing script (M4->M39 iteration across strength classes) - fm_table A1 lookup for fast MA/FM queries without full R0-R13 - Warnings for stainless steel galling, ESV insert threads (Helicoil/Ensat) - Bolt circle load distribution formula (FA + MB + MT) - 7 evals covering static, fatigue, ESV aluminium, pressure seal, thermal steel-aluminium, and combined FA+FQ cases Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
97 lines
6.8 KiB
JSON
97 lines
6.8 KiB
JSON
{
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"_comment": "VDI 2230:2003 — Dati filettatura metrica ISO (DIN 13/DIN ISO 262) e proprietà viti",
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"thread_metric_coarse": {
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"_comment": "d=nominale, P=passo, d2=fianco, d3=nocciolo, AS=sez.sforzo, Ad3=sez.nocciolo, AN=sez.nominale — tutti in mm e mm²",
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"M4": {"d":4, "P":0.7, "d2":3.545, "d3":3.242, "AS":8.78, "Ad3":8.26, "AN":12.57, "dW_hex":6.9, "dW_cyl":7.66},
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"M5": {"d":5, "P":0.8, "d2":4.480, "d3":4.134, "AS":14.2, "Ad3":13.4, "AN":19.63, "dW_hex":8.9, "dW_cyl":8.87},
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"M6": {"d":6, "P":1.0, "d2":5.350, "d3":4.917, "AS":20.1, "Ad3":19.0, "AN":28.27, "dW_hex":10.9, "dW_cyl":11.3},
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"M7": {"d":7, "P":1.0, "d2":6.350, "d3":5.917, "AS":28.9, "Ad3":27.5, "AN":38.48, "dW_hex":12.9, "dW_cyl":13.3},
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"M8": {"d":8, "P":1.25, "d2":7.188, "d3":6.647, "AS":36.6, "Ad3":34.7, "AN":50.27, "dW_hex":13.9, "dW_cyl":14.2},
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"M10": {"d":10, "P":1.5, "d2":9.026, "d3":8.376, "AS":58.0, "Ad3":55.1, "AN":78.54, "dW_hex":17.0, "dW_cyl":17.6},
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"M12": {"d":12, "P":1.75, "d2":10.863,"d3":10.106,"AS":84.3, "Ad3":80.1, "AN":113.1, "dW_hex":19.9, "dW_cyl":20.5},
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"M14": {"d":14, "P":2.0, "d2":12.701,"d3":11.835,"AS":115.4, "Ad3":110.0, "AN":153.9, "dW_hex":23.8, "dW_cyl":24.9},
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"M16": {"d":16, "P":2.0, "d2":14.701,"d3":13.835,"AS":156.7, "Ad3":150.3, "AN":201.1, "dW_hex":27.0, "dW_cyl":27.7},
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"M18": {"d":18, "P":2.5, "d2":16.376,"d3":15.294,"AS":192.5, "Ad3":183.6, "AN":254.5, "dW_hex":30.0, "dW_cyl":31.3},
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"M20": {"d":20, "P":2.5, "d2":18.376,"d3":17.294,"AS":245.0, "Ad3":234.9, "AN":314.2, "dW_hex":32.9, "dW_cyl":34.6},
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"M22": {"d":22, "P":2.5, "d2":20.376,"d3":19.294,"AS":303.4, "Ad3":292.4, "AN":380.1, "dW_hex":37.0, "dW_cyl":38.0},
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"M24": {"d":24, "P":3.0, "d2":22.051,"d3":20.752,"AS":352.5, "Ad3":338.2, "AN":452.4, "dW_hex":40.9, "dW_cyl":41.6},
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"M27": {"d":27, "P":3.0, "d2":25.051,"d3":23.752,"AS":459.4, "Ad3":443.2, "AN":572.6, "dW_hex":46.0, "dW_cyl":47.3},
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"M30": {"d":30, "P":3.5, "d2":27.727,"d3":26.211,"AS":560.6, "Ad3":539.2, "AN":706.9, "dW_hex":51.0, "dW_cyl":52.7},
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"M33": {"d":33, "P":3.5, "d2":30.727,"d3":29.211,"AS":694.0, "Ad3":669.9, "AN":855.3, "dW_hex":57.0, "dW_cyl":58.8},
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"M36": {"d":36, "P":4.0, "d2":33.402,"d3":31.670,"AS":817.0, "Ad3":787.4, "AN":1017.9,"dW_hex":63.5, "dW_cyl":65.1},
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"M39": {"d":39, "P":4.0, "d2":36.402,"d3":34.670,"AS":976.0, "Ad3":943.5, "AN":1194.6,"dW_hex":69.5, "dW_cyl":71.3}
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},
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"thread_metric_fine": {
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"M8x1": {"d":8, "P":1.0, "d2":7.350, "d3":6.917, "AS":39.2, "Ad3":37.6},
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"M10x1": {"d":10, "P":1.0, "d2":9.350, "d3":8.917, "AS":64.5, "Ad3":62.5},
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"M10x1.25":{"d":10, "P":1.25, "d2":9.188, "d3":8.647, "AS":61.2, "Ad3":58.7},
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"M12x1.25":{"d":12, "P":1.25, "d2":11.188,"d3":10.647,"AS":92.1, "Ad3":89.0},
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"M12x1.5": {"d":12, "P":1.5, "d2":11.026,"d3":10.376,"AS":88.1, "Ad3":84.5},
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"M14x1.5": {"d":14, "P":1.5, "d2":13.026,"d3":12.376,"AS":125.3, "Ad3":120.2},
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"M16x1.5": {"d":16, "P":1.5, "d2":15.026,"d3":14.376,"AS":167.3, "Ad3":162.1},
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"M18x1.5": {"d":18, "P":1.5, "d2":17.026,"d3":16.376,"AS":216.2, "Ad3":210.6},
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"M20x1.5": {"d":20, "P":1.5, "d2":19.026,"d3":18.376,"AS":272.3, "Ad3":265.1},
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"M24x1.5": {"d":24, "P":1.5, "d2":23.026,"d3":22.376,"AS":401.3, "Ad3":392.8},
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"M24x2": {"d":24, "P":2.0, "d2":22.701,"d3":21.835,"AS":384.4, "Ad3":374.2}
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},
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"strength_classes": {
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"_comment": "Rp0_2min e Rm_min in N/mm², ES in N/mm²",
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"8.8": {"Rp0_2min": 640, "Rm_min": 800, "ES": 206000},
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"10.9": {"Rp0_2min": 940, "Rm_min": 1040, "ES": 206000},
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"12.9": {"Rp0_2min": 1100, "Rm_min": 1220, "ES": 206000}
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},
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"materials_clamped": {
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"_comment": "EP in N/mm², alpha in 1/K, pG in N/mm²",
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"steel_S235": {"EP": 210000, "alpha": 11.5e-6, "pG_min": 800, "pG_max": 900, "shear_ratio": 0.60},
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"steel_S355": {"EP": 210000, "alpha": 11.5e-6, "pG_min": 900, "pG_max": 1000, "shear_ratio": 0.60},
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"steel_hardened": {"EP": 206000, "alpha": 11.5e-6, "pG_min": 1100, "pG_max": 1250, "shear_ratio": 0.62},
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"cast_iron_GJL": {"EP": 120000, "alpha": 10.5e-6, "pG_min": 400, "pG_max": 600, "shear_ratio": 0.64},
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"cast_iron_GJS": {"EP": 170000, "alpha": 11.0e-6, "pG_min": 700, "pG_max": 900, "shear_ratio": 0.64},
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"aluminum_6082": {"EP": 70000, "alpha": 23.0e-6, "pG_min": 300, "pG_max": 450, "shear_ratio": 0.60},
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"aluminum_cast": {"EP": 70000, "alpha": 21.0e-6, "pG_min": 150, "pG_max": 250, "shear_ratio": 0.58}
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},
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"friction_classes": {
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"_comment": "µ_min e µ_max per filettatura (µG) e appoggio (µK)",
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"A": {"mu_min": 0.04, "mu_max": 0.10, "description": "MoS2/PTFE/grafite in vernice o pasta; cera fusa"},
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"B": {"mu_min": 0.08, "mu_max": 0.16, "description": "Stato di consegna (legg. oliato); grassi; Zn galv."},
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"C": {"mu_min": 0.14, "mu_max": 0.24, "description": "Senza lubrificante; fosfatato; Zn-Fe secco"},
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"D": {"mu_min": 0.20, "mu_max": 0.35, "description": "Zincato a caldo senza lubrificante"},
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"E": {"mu_min": 0.30, "mu_max": 0.50, "description": "Austenitici / Al-Mg senza lubrificante"}
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},
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"friction_interface_muT": {
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"steel_steel_dry": {"mu_min": 0.10, "mu_max": 0.23},
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"steel_steel_oiled": {"mu_min": 0.07, "mu_max": 0.12},
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"steel_castiron_dry": {"mu_min": 0.12, "mu_max": 0.24},
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"steel_castiron_oiled":{"mu_min": 0.06, "mu_max": 0.10},
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"steel_aluminum_dry": {"mu_min": 0.10, "mu_max": 0.28},
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"steel_aluminum_oiled":{"mu_min": 0.05, "mu_max": 0.18}
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},
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"tightening_factors_alphaA": {
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"torque_manual_classC": {"alphaA_min": 2.5, "alphaA_max": 4.0, "note": "Chiave a forchetta/stella manuale"},
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"torque_wrench_classB": {"alphaA_min": 1.6, "alphaA_max": 2.0, "note": "Chiave dinamometrica manuale, classe B"},
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"torque_wrench_classA": {"alphaA_min": 1.2, "alphaA_max": 1.6, "note": "Chiave dinamometrica calibrata, classe A"},
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"power_tool_controlled": {"alphaA_min": 1.4, "alphaA_max": 1.6, "note": "Avvitatore controllato in coppia"},
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"yield_or_angle_controlled":{"alphaA_min": 1.0, "alphaA_max": 1.0, "note": "Serraggio angolare o al limite di snervamento"}
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},
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"embedding_fZ_micron": {
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"_comment": "fZ in µm per interfaccia — funzione della rugosità Rz",
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"head_bearing_Rz_le10": {"fZ_min": 2.0, "fZ_max": 4.0},
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"head_bearing_Rz_gt10": {"fZ_min": 4.0, "fZ_max": 7.0},
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"flat_joint_Rz_le10": {"fZ_min": 1.5, "fZ_max": 2.5},
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"flat_joint_Rz_gt10": {"fZ_min": 2.5, "fZ_max": 6.5},
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"thread_engagement": {"fZ_min": 1.0, "fZ_max": 2.0}
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},
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"min_engagement_length_ratio": {
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"_comment": "meff_min / d — rapporto lunghezza avvitamento / diametro nominale",
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"steel_8.8": 0.85,
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"steel_10.9": 0.90,
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"steel_12.9": 0.95,
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"cast_iron_8.8": 1.30,
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"cast_iron_10.9": 1.50,
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"cast_iron_12.9": 1.70,
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"aluminum_8.8": 2.00,
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"aluminum_10.9": 2.50,
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"aluminum_12.9": 3.00
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}
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}
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