72MW各級軸靜強(qiáng)度與疲勞強(qiáng)度報告

1、第七章 各級軸靜強(qiáng)度與疲勞強(qiáng)度校核7.1 行星輪軸軸強(qiáng)度分析軸是齒輪箱傳動系統(tǒng)中的關(guān)鍵部件。在2MW風(fēng)電齒輪箱中，行星輪軸連接內(nèi)/外嚙合的行星輪，并傳遞扭矩；太陽軸和中間軸輪轂將扭矩從行星部分傳遞到平行輪系部分；輸出齒輪軸是齒輪箱的輸出結(jié)構(gòu)，各軸在風(fēng)電齒輪箱中均起重要作用。本章根據(jù)2MW風(fēng)電齒輪箱實際設(shè)計圖紙，建立整個齒輪箱Romax模型，并依據(jù)DIN743-1-2000(軸類零件負(fù)載能力計算)標(biāo)準(zhǔn)校核各軸的靜強(qiáng)度和疲勞強(qiáng)度。7.1.1 行星輪軸模型行星輪軸圖紙及三維模型分別如圖7.1.1所示。(a) 二維圖紙(b三維模型圖7.1.1 行星齒輪軸模型各軸段詳細(xì)參數(shù)如表7.1.1。表7.1.1

2、軸段參數(shù)軸肩從軸基準(zhǔn)的偏置距從基準(zhǔn)的偏置距基準(zhǔn)對象(mm) 100軸基準(zhǔn)212.00012.000軸肩 13517.000505.000軸肩24555.50038.500軸肩 35557.50040.500軸肩 46582.50025.000軸肩 57584.5002.000軸肩 68609.00026.500軸肩 79610.000610.000軸基準(zhǔn)7.1.2 行星齒輪軸靜強(qiáng)度軸靜強(qiáng)度校核的目的在于評定軸對塑性變形的抵抗能力，靜強(qiáng)度的校核是根據(jù)軸上作用的最大瞬時載荷(包括動載荷和沖擊載荷)計算的。在極限扭矩3424.9 kNm時，行星齒輪軸上危險截面的強(qiáng)度計算詳細(xì)數(shù)據(jù)如表7.1.

3、2所示。表7.1.2 危險截面參數(shù)表節(jié)點指數(shù)3mv (MPa)17.335823節(jié)點偏置 (mm)105.000mv (MPa)10.008842Sfatigue5.127zdFK (MPa)678.417097Sdeformation10.879bFK (MPa)746.258807d (mm)260.000tFK (MPa)430.852723di (mm)0.000Fzd,b1.000A (mm2)53093Ft1.000zdm (MPa)0.126623K2Fzd1.000bm (MPa)0.000000K2Fb1.100tm (MPa)10.008575K2Ft1.100zda (M

4、Pa)0.000000zdmax (MPa)0.126623ba (MPa)66.231225bmax (MPa)66.231225ta (MPa)0.000000tmax (MPa)10.008575zdWK (MPa)361.822452zd1.000bWK (MPa)361.822452b1.000tWK (MPa)217.0934711.000Kzd1.000zd1.000Kb1.250b1.000K1.2501.000zdADK (MPa)0.000000K10.905bADK (MPa)339.600125K20.800tADK (MPa)0.000000KF1.000zdK0.2

5、50KF0.800bK0.250KV1.000K0.136-由表可知行星齒輪軸的靜強(qiáng)度安全系數(shù)S=10.879。7.1.3 行星齒輪軸疲勞強(qiáng)度額定載荷時計算得到行星齒輪軸上各軸段的疲勞強(qiáng)度及永久變形的安全系數(shù)如表7.1.4所示。表7.1.4 安全系數(shù)節(jié)點偏置距疲勞失效永久變形1105.00011.223.752137.50019.0639.653232.50031.8560.484367.50012.927.335462.50012.2625.996515.00018.6838.92軸上危險節(jié)點的疲勞強(qiáng)度計算詳細(xì)數(shù)據(jù)如表7.1.5所示。表7.1.5 危險節(jié)點參數(shù)表永久變形疲勞失效節(jié)點指數(shù)11節(jié)

6、點偏置 (mm)105.000105.000Sfatigue11.19811.198Sdeformation23.75123.751d (mm)260.000260.000di (mm)0.0000.000A (mm2)5309353093zdm (MPa)0.0664010.066401bm (MPa)0.0000000.000000tm (MPa)4.5831704.583170zda (MPa)0.0000000.000000ba (MPa)30.32808630.328086ta (MPa)0.0000000.000000zdWK (MPa)361.822452361.822452bW

7、K (MPa)361.822452361.822452tWK (MPa)217.093471217.093471Kzd1.0001.000Kb1.2501.250K1.2501.250zdADK (MPa)0.0000000.000000bADK (MPa)339.599398339.599398tADK (MPa)0.0000000.000000zdK0.2500.250bK0.2500.250K0.1360.136mv (MPa)7.9385627.938562mv (MPa)4.5833314.583331zdFK (MPa)678.417097678.417097bFK (MPa)74

8、6.258807746.258807tFK (MPa)430.852723430.852723Fzd,b1.0001.000Ft1.0001.000K2Fzd1.0001.000K2Fb1.1001.100K2Ft1.1001.100zdmax (MPa)0.0664010.066401bmax (MPa)30.32808630.328086tmax (MPa)4.5831704.583170zd1.0001.000b1.0001.0001.0001.000zd1.0001.000b1.0001.0001.0001.000K10.9050.905K20.8000.800KF1.0001.000

9、KF0.8000.800KV1.0001.0007.2 太陽軸強(qiáng)度分析7.2.1 太陽軸模型太陽軸圖紙及三維模型分別如圖7.2.1所示。(a) 二維圖紙(b) 三維模型圖7.2.1 太陽軸模型軸剖面發(fā)生突變的地方會造成軸上的應(yīng)力集中，嚴(yán)重削弱軸的疲勞強(qiáng)度，因此建模時需要考慮軸肩部位的過渡圓角和凹切圓角。各軸段及圓角的詳細(xì)參數(shù)如表7.2.1、表7.2.2所示。表7.2.1 軸段參數(shù)軸肩從軸基準(zhǔn)的偏置距從基準(zhǔn)的偏置距基準(zhǔn)對象(mm)100軸基準(zhǔn)22.0002.000軸基準(zhǔn)3420.000420.000軸肩 14422.0002.000軸肩 35440.00018.000軸肩 461085.0006

10、45.000軸肩 571098.00013.000軸肩 681100.0002.000軸肩 791300.000200.000軸肩 8101310.00010.000軸肩 9111498.000188.000軸肩 10121503.0005.000軸肩 11131510.0001510.000軸基準(zhǔn)表7.2.2 軸特征參數(shù)偏置距類型半徑寬度深度420.000過渡圓角20- - 1085.000過渡圓角15.000- - 1330.000過渡圓角10.000- - 1493.000過渡圓角5.000- - 7.2.2 太陽軸靜強(qiáng)度軸靜強(qiáng)度校核的目的在于評定軸對塑性變形的抵抗能力，靜強(qiáng)度的校核是根

11、據(jù)軸上作用的最大瞬時載荷(包括動載荷和沖擊載荷)計算的。在極限扭矩3424.9 kNm時，太陽軸上危險截面的強(qiáng)度計算詳細(xì)數(shù)據(jù)如表7.2.3所示。表7.2.3 危險截面參數(shù)表節(jié)點指數(shù)6mv (MPa)249.028422節(jié)點偏置 (mm)440.000mv (MPa)143.776627Sfatigue99.644zdFK (MPa)356.415238Sdeformation1.429bFK (MPa)356.415238d (mm)275.000tFK (MPa)205.776434di (mm)145.000Fzd,b1.000A (mm2)42883Ft1.000zdm (MPa)-11

12、.218843K2Fzd1.000bm (MPa)0.000000K2Fb1.000tm (MPa)143.922453K2Ft1.000zda (MPa)0.000000zdmax (MPa)-11.218843ba (MPa)1.077703bmax (MPa)1.077703ta (MPa)0.000000tmax (MPa)143.922453zdWK (MPa)201.470650zd1.000bWK (MPa)201.470650b1.000tWK (MPa)120.8823901.000Kzd1.000zd1.000Kb1.250b1.000K1.2501.000zdADK (M

13、Pa)107.386816K10.427bADK (MPa)107.386816K20.800tADK (MPa)61.999807KF1.000zdK0.250KF0.800bK0.250KV1.000K0.136-由表可知太陽軸的靜強(qiáng)度安全系數(shù)S=1.429。7.2.3 太陽軸疲勞強(qiáng)度額定載荷時計算得到的太陽軸上各軸段疲勞強(qiáng)度及永久變形安全系數(shù)如表7.2.4所示。表7.2.4 安全系數(shù)節(jié)點偏置距疲勞失效永久變形12.0008.737e412.482210.000771.14.1593420.00046.773.9974422.000256.24.6625440.000145.33.1266

14、55.00062.143.1227870.00039.193.12281085.00028.583.12291098.00039.514.208101100.00021.074.208111300.00017.316.123121310.00029.67117.5131498.0009.209102.2軸上危險節(jié)點的疲勞強(qiáng)度計算詳細(xì)數(shù)據(jù)如表7.2.5所示。表7.2.5 危險節(jié)點參數(shù)表永久變形疲勞失效節(jié)點指數(shù)513節(jié)點偏置 (mm)440.0001498.000Sfatigue145.3239.209Sdeformation3.120102.237d (mm)275.000252.000di (

15、mm)145.000145.000A (mm2)4288333363zdm (MPa)-5.137283-4.659397bm (MPa)0.0000000.000000tm (MPa)65.904336-1.247331zda (MPa)0.0000000.000000ba (MPa)1.1901907.729363ta (MPa)0.0000000.000000zdWK (MPa)201.47065064.706895bWK (MPa)201.47065070.859970tWK (MPa)120.88239063.314368Kzd1.0003.067Kb1.2503.501K1.250

16、2.351zdADK (MPa)172.96215064.994859bADK (MPa)172.96215071.177423tADK (MPa)111.90454163.476803zdK0.2500.070bK0.2500.077K0.1360.068mv (MPa)114.033999-4.128253mv (MPa)65.837560-2.383448zdFK (MPa)356.415238403.770345bFK (MPa)356.415238403.770345tFK (MPa)205.776434202.710363Fzd,b1.0001.150Ft1.0001.000K2F

17、zd1.0001.000K2Fb1.0001.000K2Ft1.0001.000zdmax (MPa)-5.137283-4.659397bmax (MPa)1.1901907.729363tmax (MPa)65.904336-1.247331zd1.0003.067b1.0002.8011.0001.881zd1.0003.747b1.0003.4221.0002.165K10.4270.420K20.8000.800KF1.0001.000KF0.8000.800KV1.0001.0007.3 中間空心軸強(qiáng)度分析7.3.1 中間空心軸模型中間空心軸圖紙及三維模型分別如圖7.3.1所示。(

18、a)二維零件圖 (b) 三維模型圖7.3.1中間空心軸模型軸剖面發(fā)生突變的地方會造成軸上的應(yīng)力集中，嚴(yán)重削弱軸的疲勞強(qiáng)度，因此建模時需要考慮軸肩部位的過渡圓角和凹切圓角。各軸段及圓角的詳細(xì)參數(shù)如表7.3.1、表7.3.2所示。表7.3.1 軸段參數(shù)軸肩從軸基準(zhǔn)的偏置距從基準(zhǔn)的偏置距基準(zhǔn)對象(mm) -100軸基準(zhǔn)22.0002.000軸基準(zhǔn)3106.000104.000軸肩 24110.0004.000軸肩 35111.0001.000軸肩 46287.000176.000軸肩 57307.00020.000軸肩 68332.00025.000軸肩 79340.0008.000軸肩

19、810646.000306.000軸肩 911647.0001.0軸肩 1012651.0004.000軸肩 1113833.000182.000軸肩 1214835.000835.000軸基準(zhǔn)表7.3.2 軸特征參數(shù)偏置距類型半徑寬度深度103.000凹切圓角4.0007.0000.5106過渡圓角4-287.000過渡圓角20.000-332.000過渡圓角8.000-647.000凹切圓角4.0007.0000.57.3.2 中間空心軸靜強(qiáng)度軸靜強(qiáng)度校核的目的在于評定軸對塑性變形的抵抗能力，靜強(qiáng)度的校核是根據(jù)軸上作用的最大瞬時載荷(包括動載荷和沖擊載荷)計算的。在極限扭矩3424.9kN

20、m時，中間空心軸上危險截面的強(qiáng)度計算詳細(xì)數(shù)據(jù)如表7.3.3所示。表7.3.3 危險截面參數(shù)表節(jié)點指數(shù)10mv (MPa)34.363643節(jié)點偏置 (mm)340.000mv (MPa)19.839859Sfatigue6.208zdFK (MPa)307.500000Sdeformation7.798bFK (MPa)307.500000d (mm)455.000tFK (MPa)177.535208di (mm)325.000Fzd,b1.000A (mm2)79639Ft1.000zdm (MPa)1.586261K2Fzd1.000bm (MPa)0.000000K2Fb1.000tm

21、 (MPa)-19.818710K2Ft1.000zda (MPa)0.000000zdmax (MPa)1.586261ba (MPa)17.825271bmax (MPa)17.825271ta (MPa)0.000000tmax (MPa)-19.818710zdWK (MPa)164.000000zd1.000bWK (MPa)164.000000b1.000tWK (MPa)98.4000001.000Kzd1.000zd1.000Kb1.250b1.000K1.2501.000zdADK (MPa)0.000000K10.410bADK (MPa)110.664912K20.800

22、tADK (MPa)0.000000KF1.000zdK0.250KF0.800bK0.250KV1.000K0.136-由表可知中間空心軸靜強(qiáng)度安全系數(shù)S=7.798。7.3.3 中間空心軸疲勞強(qiáng)度額定載荷時計算得到的中間空心軸上各軸段的疲勞強(qiáng)度及永久變形的安全系數(shù)如表7.3.4所示。表7.3.4 安全系數(shù)節(jié)點偏置距疲勞失效永久變形166.000381971602106.00070.13131.53110.00018.12154.74111.00092.65173.75287.00019.1135.846307.0008.56956.537332.0005.52117.648340.0001

23、4.0417.229437.00015.318.1610637.00021.2618.2911642.00022.9218.2812646.00049.3269.4313647.0007.46351.314651.00029.5541.3715705.65641.0852.1216789.79421.032.1117833.00030.2834.2軸上危險節(jié)點的疲勞強(qiáng)度計算詳細(xì)數(shù)據(jù)如表7.3.5所示。表7.3.5 危險節(jié)點參數(shù)表永久變形疲勞失效節(jié)點指數(shù)87節(jié)點偏置 (mm)340.000332.000Sfatigue14.0415.521Sdeformation17.22017.642d (m

24、m)455.000455.000di (mm)325.000325.000A (mm2)7963979639zdm (MPa)0.7263740.726374bm (MPa)0.0000000.000000tm (MPa)-9.075296-9.075296zda (MPa)0.0000000.000000ba (MPa)7.7460427.933773ta (MPa)0.0000000.000000zdWK (MPa)164.00000045.485931bWK (MPa)164.00000049.370729tWK (MPa)98.40000046.347991Kzd1.0003.606K

25、b1.2504.152K1.2502.654zdADK (MPa)0.0000000.000000bADK (MPa)108.76334843.804653tADK (MPa)0.0000000.000000zdK0.2500.059bK0.2500.064K0.1360.060mv (MPa)15.73564815.735648mv (MPa)9.0849819.084981zdFK (MPa)307.500000353.625000bFK (MPa)307.500000353.625000tFK (MPa)177.535208177.535208Fzd,b1.0001.150Ft1.000

26、1.000K2Fzd1.0001.000K2Fb1.0001.000K2Ft1.0001.000zdmax (MPa)0.7263740.726374bmax (MPa)7.7460427.933773tmax (MPa)-9.075296-9.075296zd1.0003.606b1.0003.3221.0002.123zd1.0004.402b1.0004.0551.0002.444K10.4100.410K20.8000.800KF1.0001.000KF0.8000.800KV1.0001.0007.4 輸出齒輪軸強(qiáng)度分析7.4.1 輸出齒輪軸模型輸出齒輪軸圖紙及三維模型分別如圖7.4

27、.1所示。(a) 二維圖紙(b) 三維模型圖7.4.1輸出齒輪軸模型軸剖面發(fā)生突變的地方會造成軸上的應(yīng)力集中，嚴(yán)重削弱軸的疲勞強(qiáng)度，因此建模時需要考慮軸肩部位的過渡圓角和凹切圓角。各軸段及圓角的詳細(xì)參數(shù)如表7.4.1、表7.4.2所示。表7.4.1 軸段參數(shù)軸肩從軸基準(zhǔn)的偏置距從基準(zhǔn)的偏置距基準(zhǔn)對象(mm) -100軸基準(zhǔn)22.0002.000軸基準(zhǔn)398.00098.000軸基準(zhǔn)4108.000108.000軸基準(zhǔn)5164.00056.000軸肩 46168.0004.000軸肩 57348.000240.000軸肩 48350.0002.000軸肩 79668.000318.00

28、0軸肩 810672.0004.000軸肩 911852.000180.000軸肩 1012853.0001.0軸肩 1113855.0002.000軸肩 1214861.0006.000軸肩 1315899.00038.000軸肩 1416901.0002.000軸肩 1517969.00068.000軸肩 16181148.000179.000軸肩 17191150.0001150.000軸基準(zhǔn)表7.4.2 軸特征參數(shù)偏置距類型半徑寬度深度104凹切圓角4.0007.0000.5158.000過渡圓角10.000-348.000過渡圓角6.000-668.000凹切圓角4.0007.000

29、0.5899.000凹切圓角2.0005.0000.47.4.2 輸出齒輪軸靜強(qiáng)度軸靜強(qiáng)度校核的目的在于評定軸對塑性變形的抵抗能力，靜強(qiáng)度的校核是根據(jù)軸上作用的最大瞬時載荷(包括動載荷和沖擊載荷)計算的。在極限扭矩3424.9kNm時，輸出齒輪軸上危險截面的強(qiáng)度計算詳細(xì)數(shù)據(jù)如表7.4.3所示。表7.4.3 危險截面參數(shù)表節(jié)點指數(shù)22mv (MPa)104.793683節(jié)點偏置 (mm)969.000mv (MPa)60.502661Sfatigue10.051zdFK (MPa)467.241527Sdeformation4.905bFK (MPa)513.965680d (mm)130.00

30、0tFK (MPa)296.738224di (mm)0.000Fzd,b1.000A (mm2)13273Ft1.000zdm (MPa)0.000000K2Fzd1.000bm (MPa)0.000000K2Fb1.100tm (MPa)60.502661K2Ft1.100zda (MPa)0.000000zdmax (MPa)0.000000ba (MPa)0.000000bmax (MPa)0.000000ta (MPa)0.000000tmax (MPa)60.502661zdWK (MPa)227.419038zd1.161bWK (MPa)267.271471b1.000tWK

31、(MPa)160.3628831.000Kzd1.161zd1.444Kb1.235b1.097K1.2351.104zdADK (MPa)0.000000K10.560bADK (MPa)0.000001K20.810tADK (MPa)0.000000KF1.000zdK0.208KF0.810bK0.254KV1.000K0.138-由表可知輸出齒輪軸的靜強(qiáng)度安全系數(shù)S=4.905。7.4.3 輸出齒輪軸疲勞強(qiáng)度額定載荷時計算得到的輸出齒輪軸上各軸段的疲勞強(qiáng)度及永久變形的安全系數(shù)如表7.4.4所示。表7.4.4 安全系數(shù)節(jié)點偏置距疲勞失效永久變形161.500215.5414.5298.

32、00016.7232.153108.0005.21225.784164.0008.96617.455168.0004.51920.636258.0007.17213.267348.0007.1912.588350.0006.78811.879509.00011.9416.6810668.00018.3717.4311672.00038.2315.5612724.500295.015.7113813.50026.0615.2914852.000-15.7215853.000-12.5716855.000-11.8717861.000-11.7318899.000-11.619901.000-10

33、.8320969.000-10.71211055.000-10.72軸上危險節(jié)點的疲勞強(qiáng)度計算詳細(xì)數(shù)據(jù)如表7.4.5所示。表7.4.5 危險節(jié)點參數(shù)表永久變形疲勞失效節(jié)點指數(shù)205節(jié)點偏置 (mm)969.000168.000Sfatigue4157253141.6804.519Sdeformation10.71120.626d (mm)130.000163.000di (mm)0.0000.000A (mm2)1327320867zdm (MPa)0.0000000.000000bm (MPa)0.0000000.000000tm (MPa)27.7051120.000000zda (MPa

34、)0.0000000.000000ba (MPa)0.00000024.900787ta (MPa)0.0000000.000000zdWK (MPa)227.419038105.816124bWK (MPa)267.271471112.535451tWK (MPa)160.36288395.514680Kzd1.1612.268Kb1.2352.665K1.2351.884zdADK (MPa)217.436050NaNbADK (MPa)255.095188112.535451tADK (MPa)156.533560NaNzdK0.2080.097bK0.2540.104K0.1380.0

35、87mv (MPa)47.9866620.000000mv (MPa)27.7051120.000000zdFK (MPa)467.241527466.915626bFK (MPa)513.965680513.607188tFK (MPa)296.738224269.573862Fzd,b1.0001.100Ft1.0001.000K2Fzd1.0001.000K2Fb1.1001.100K2Ft1.1001.100zdmax (MPa)0.0000000.000000bmax (MPa)0.00000024.900787tmax (MPa)27.7051120.000000zd1.1612.

36、268b1.0002.1321.0001.507zd1.4442.780b1.0972.6141.1041.735K10.5600.508K20.8100.800KF1.0001.000KF0.8100.800KV1.0001.0007.5 中間級齒輪軸強(qiáng)度分析7.5.1 中間級齒輪軸模型中間級齒輪軸圖紙及三維模型分別如圖7.5.1所示。(a) 二維零件圖 (b) 三維模型圖7.5.1中間級齒輪軸模型軸剖面發(fā)生突變的地方會造成軸上的應(yīng)力集中，嚴(yán)重削弱軸的疲勞強(qiáng)度，因此建模時需要考慮軸肩部位的過渡圓角和凹切圓角。各軸段及圓角的詳細(xì)參數(shù)如表7.5.1、表7.5.2所示。表7.5.1 軸段參數(shù)軸肩從

37、軸基準(zhǔn)的偏置距從基準(zhǔn)的偏置距基準(zhǔn)對象(mm)- 100軸基準(zhǔn)22.0002.000軸基準(zhǔn)3182.000180.000軸肩 24186.0004.000軸肩 35187.0001.000軸肩 46347.000160.000軸肩 57354.0007.000軸肩 68355.0001.000軸肩 79364.00010.000軸肩 710684.000320.000軸肩 911693.000-1.000軸肩 1212694.00010.000軸肩 1013698.0004.000軸肩 1214890.000192.000軸肩 1315892.000892.000軸基準(zhǔn)表7.5.2 軸

38、特征參數(shù)偏置距類型半徑寬度深度179凹切圓角470.5347過渡圓角7-684過渡圓角5-694凹切圓角470.57.5.2 中間級齒輪軸靜強(qiáng)度軸靜強(qiáng)度校核的目的在于評定軸對塑性變形的抵抗能力，靜強(qiáng)度的校核是根據(jù)軸上作用的最大瞬時載荷(包括動載荷和沖擊載荷)計算的。在極限扭矩3424.9kNm時，中間級齒輪軸上危險截面的強(qiáng)度計算詳細(xì)數(shù)據(jù)如表7.5.3所示。表7.5.3 危險截面參數(shù)表節(jié)點指數(shù)12mv (MPa)93.243931節(jié)點偏置 (mm)524.000mv (MPa)53.834409Sfatigue1.435zdFK (MPa)403.763167Sdeformation2.695b

39、FK (MPa)444.139483d (mm)200.000tFK (MPa)256.424050di (mm)0.000Fzd,b1.000A (mm2)31416Ft1.000zdm (MPa)0.125234K2Fzd1.000bm (MPa)0.000000K2Fb1.100tm (MPa)53.834360K2Ft1.100zda (MPa)0.000000zdmax (MPa)0.125234ba (MPa)135.766789bmax (MPa)135.766789ta (MPa)0.000000tmax (MPa)53.834360zdWK (MPa)228.234988zd

40、1.000bWK (MPa)228.234988b1.000tWK (MPa)136.9409931.000Kzd1.000zd1.000Kb1.250b1.000K1.2501.000zdADK (MPa)0.000000K10.484bADK (MPa)194.789825K20.800tADK (MPa)0.000000KF1.000zdK0.250KF0.800bK0.250KV1.000K0.136-由表可知中間級齒輪軸的靜強(qiáng)度安全系數(shù)是S=2.695。7.5.3 中間級齒輪軸疲勞強(qiáng)度額定載荷時計算得到的中間級齒輪軸上各軸段的疲勞強(qiáng)度及永久變形的安全系數(shù)如表7.5.4所示。表7.5.

41、4 安全系數(shù)節(jié)點偏置距疲勞失效永久變形182.000597.211622182.00023.3745.473184.00013.2613.654186.0005.6214.065187.00017.8118.926347.0005.56610.527354.0002.15310.788355.0006.50510.419364.0001.4346.76210524.0003.125.86511684.0002.35413.9212693.00014.1831.6613694.0003.17328.4514698.00011.0724.5215733.50021.1153.5716819.00021.8759.23軸上危險節(jié)點的疲勞強(qiáng)度計算詳細(xì)數(shù)據(jù)如表7.5.5所示。表7.5.5 危險節(jié)點參數(shù)表永久變形疲勞失效節(jié)點指數(shù)109節(jié)點偏置 (mm)524.000364.0