安全倍数计算(综合)-标准

胎体帘线安全倍数的计算2BLRdrumuendsP(Ra2-Rb2)Sc--胎体帘线安全倍数Sc=5.39BL--破断力,kgBL=20.5Rdrum--成型鼓半径，cmRdrum=21.0uends--半成品密度，根/cmuends=10.00P--气压，kg/cm2P=4.85(1kg/cm2＝98.066kPa)475Ra--胎里半径，cmRa=32.25Rb--零点半径，cmRb=26.65Rb--零点半径，cmRb=26.65D--轮胎外直径，cmD=68.3H1--断面水平轴高，cmH1=7.7d0--轮胎着合直径，cmd0=37.9Ra=D-2t2Ra--胎里半径，cmRa=32.25D--轮胎外直径，cmD=68.3t--成品胎冠厚，cmt=1.9t=花纹深度+基部胶厚+带束层厚度+帘布厚度Ra的计算规格215/70R15Rb=(d0+2H1)/2Rb的计算Sc=nnS1612.61298Sc=5.43Sc=2.102163BL=14.3BL=31.36Rdrum=18.0Rdrum=27.55uends=10.00uends=9P=3.50P=7.13805350700Ra=28.65Ra=52.05Rb=23.45Rb=40.9Rb=23.45Rb=40.9D=60.5D=112.1H1=7.05H1=15.3d0=32.8d0=51.2Ra=D-2t2Ra=28.65Ra=52.05D=60.5D=112.1t=1.6t=4`规格12.5R20规格XST175/80R13Rb=(d0+2H1)/2帘线密度8.4钢丝总根数25轮胎各部骨架材料强度计算胎体帘线部分轮胎充气压力P（kgf/cm2)胎里半径RK(cm)零点半径R0(cm)胎冠各层帘线密度和（根/cm）单根帘线强力（kgf/根)140.603216038胎体帘线安全倍数23.20893199轮胎中单根帘线所受张力（kgf)2.525.5521.88514.1零点半径R0(cm)带束层（两层）部分2.524.762轮胎充气压力P（kgf/cm2)带束层曲率半径RK(cm)带束层层数单根强力（kgf/根)56带束层裁断角度（度）22轮胎中单根钢帘线所受张力（kgf)A9*D9/(G9*I9*COS(RADIANS(L9))*COS(RADIANS(L9)))2.525.55128.121.885带束层钢帘线安全倍数#VALUE!轮胎充气压力P（kgf/cm2)胎里半径RK(cm)单根钢丝强力（kgf/根)钢丝圈部分轮胎中钢丝圈所受张力（kgf)217.3115938钢丝圈安全倍数（未考虑过盈）14.73690356Sc--带束层安全倍数P--轮胎最大气压Kg/cm2Bli---单根帘线强度Kgf/根N--带束层层数dendi--成品带束层帘线密度根/cmRai--成品带束层半径cmα--成品带束层胎冠角度α0--带束层裁断角度δ1--成型工艺伸张值Dk--成品带束层直径D1--半成品带束层直径D1=COSα=α=α=α的计算COSα=COSα0/δ1×Dk/D1α0=δ1=Dk=P=Bli=N=dendi=Rai=子午胎带束层所受应力及安全倍数计算规格应力计算Sc=Sc=NSc=成品带束层帘线密度的计算R1--半成品第一层带束层半径cmR2--成品带束层半径cmi0--带束层原始密度根/cmS---单根帘线强度Kgf/根N---安全倍数(载重5-7;轿车-12)i0=dendi=安全倍数计算dendi=i0×R1/Rk×Sinα0/SinαR1=R2=195/60R15dendiBliCOS2αPRai13.912.56229.229.1519.20.33490.9444220.38401.01358.356.51.80.944419.190.3349COSα=COSα0/δ1×Dk/D1Bli=N=dendi=规格Sc=Sc=P=Nδ1=Dk=D1=COSα=Rai=α=COSα=COSα0/δ1×Dk/D1α0=α=28.2529.158.39.2dendi=i0×R1/Rk×Sinα0/Sinαi0=dendi=dendi=i0×R1/Rk×Sinα0/SinαR1=R2=175/80R13dendiBliCOS2αPRai10.913.56229.82917.730.30950.9525220.38401.0105855.92.10.952517.730.3095COSα=COSα0/δ1×Dk/D127.95298.39.8dendi=i0×R1/Rk×Sinα0/Sinα钢丝圈安全倍数的计算μbwBLPsina(Rb2-Rc2)安全倍数(5～7)Sc--钢丝圈安全倍数Sc=11.50BL--破断力,kgBL=177P--气压，kg/cm2P=4.85(1kg/cm2＝98.066kPa)475Rc--钢丝圈中心半径，cmRc=19.69Rb--零点半径，cmRb=26.65μbw--钢丝总根数，7层数×6根数μbw＝42a--胎圈倾斜角，°a=650.826829Rb--零点半径，cmRb=26.65D--轮胎外直径，cmD=68.3H1--断面水平轴高，cmH1=7.7d0--轮胎着合直径，cmd0=37.9Rc的计算Rc--钢丝圈中心半径，cmRc=19.69d0--轮胎着合直径，cmd0=37.9t--钢丝圈底部总厚度，cmt=0.35n--钢丝圈层数n=7.00规格215/70R15Rb的计算Rb=(d0+2H1)/2Rc=(d0+2t)/2+(n×0.11)/2Sc=2#REF!3.5#REF!195/60R15单195/60R14双层20.914.31816.8511102.52.52927.8524.823.5561.458.95.95.91.71.61214.6517.446262229.29.429.1528.0519.2018.6822221.0131.01358.356.156.554.28.38.313.9114.8813113119.5418.282525656537.8235.30.350.355512.3813.10轮辋直径二次法成型机一次法成型机钢丝圈直径钢丝直径(mm）抗拉强度（Mpa）12″330286307∮0.96≥1770（131kg）成型机头直径钢丝圈带束层安全倍数D1--半成品带束层直径N-胎体帘布层数Sc--带束层安全倍数(载重5-7;轿车-12)i0--带束层原始密度根/cmdendi--成品带束层帘线密度根/cmRai--成品带束层半径cmα0--带束层裁断角度BL--破断力,kgRdrum--成型鼓半径，cmuends--半成品密度，根/cmP--气压，kg/cm2安全倍数计算胎体帘线安全倍数Ra--胎里半径，cmRb--零点半径，cmSc--胎体帘线安全倍数(载重7--9;轿车10-12)H2--断面水平轴高，cmt--成品胎冠厚，cmD--轮胎外直径，cmt--钢丝圈底部总厚度，cmn--钢丝圈层数Bli---单根帘线强度Kgf/根α--成品带束层胎冠角度N--带束层层数δ1--成型工艺伸张值Dk--成品带束层直径Rc--钢丝圈中心半径，cmμbw--钢丝总根数，层数×根数钢丝圈安全倍数Sc--钢丝圈安全倍数BL--破断力,kga--胎圈倾斜角d0--轮胎着合直径，cm2213″36031133414″390337360/35915″420360385/38416″440388410/411/416（轻卡载重）17″465441.518″490466.5带束层钢丝带束层钢丝代号直径带束层密度（根/cm）破断力（N/根）压延半成品厚度（mm）2×0.30HTSD600.68.33≥405（41.3kg）1.22+2×0.25HTSD810.658.33≥605（61.7kg）1.23+9×0.22+0.15SM651.185.5≥1210（123.5kg）2.02+2×0.35HTSM680.946≥1050（107.1kg）1.63×0.20+6×0.35SL651.135.5≥1850（188.8kg2.0胎体帘线（聚酯）胎体帘线代号直径帘线密度（根/m）断裂强力（N/根）压延半成品厚度（mm）1000D/2-25EPIEA900.551000≥140（14.3kg）11500D/2-25EPIEE820.681000≥205（20.9kg）1.11500D/2-30EPIEE840.681102≥205（20.9kg）1.4胎体帘线（改性N66）胎体帘线代号直径帘线密度（根/m）断裂强力（N/根）压延半成品厚度（mm）140tex/3-94EPDND420.75907≥313.61.2140tex/3-74EPDND400.75740≥313.61.293tex/2-32EPINA900.551260≥137.21.093tex/2-16EPINA000.55630≥137.21.0PCRLTRTBRRadialOff-Road12~2010~179~1311~15PCRLTRTBRRadialOff-Road9~128~117~108~12PCRLTRTBRRadialOff-Road7~106~94~75~8∮0.96≥1770（131kg）CARCASSBREAKERBEAD195/60R14单185/60R14双层185/60R14单205/75R16C215/45R17双层215/45R17单层20.914.320.914.320.916.8516.852223.2523.2511101010112.534.753327.9527.0533.6529.4529.4523.5523.2527.9526.526.558.957.771.262.562.55.95.67.654.754.751.51.81.951.81.81222113.6816.8111.0326.8621.596262122.46262222229.49.36.18.98.928.0527.4533.829.8529.8518.6819.1819.1819.9519.9522222222221.0131.0131.011.011.0156.154.967.659.759.754.253.265.758.358.38.38.45.58.338.3314.8812.478.2910.9310.9313113113113113118.2818.2820.8822.4822.482525423636656565656535.335.340.443.543.50.350.350.350.40.45566613.1011.667.4017.6217.62代号挂胶后直径(mm）S.96钢丝圈∮1.1胶号4P24P24A14P24A1胶号6P36P36P3胶号6A16A15P2/6A16A1S.96∮1.1165/70R13单层84165/70R13LT双层84165/70R15LT三层90165/70R15LT二层90185R14C双20.920.914.314.320.91818181819.511111010103.53.53.53.54.526.626.626.626.630.7222.322.322.322.325.2556.256.256.256.265.25.85.85.85.87.351.51.51.51.51.881232211.2522.4920.9913.9911.8362107.1107.1107.162222226.36.36.36.39.526.726.726.726.731.0332.7932.7932.7932.7918.5822222222221.011.011.011.011.0153.453.453.453.462.0658.358.358.358.360.18.338.338.338.338.35.9010.2010.2010.207.54131131131131