涡轮齿轮，AGMA6011

K IS S so ft f or h ig h sp ee d ge ar in g EES KISSsoft GmbH ++41 41 755 09 54 (Phone) P.O. Box 121 ++41 41 755 09 48 (Fax) Weid 10 ++41 79 372 64 89 (Mobile) 6313 Menzingen h.dinner@EES-KISSsoft.ch Switzerland www.EES-KISSsoft.ch 1 Calculation of gears in KISSsoft 10-2008 following AGMA6011-I03 1.1 Executive summary AGMA6011 “Specification for High Speed Helical Gear Units” is a standard covering different aspects of high speed gearboxes as gear rating, but also as lubrication, vibrations, testing. The chapter about gear rating is very short and refers basically to the specific AGMA standard for gear rating, which is AGMA 2101 (metric) or AGMA 2001 (imperial). This technical report describes how a gear rating has to be performed using KISSsoft, using AGMA 2101 or 2001, when respecting the restrictions given in AGMA6011. When you follow all the restrictions, as explained here, then the gear rating is performed exactly as required by AGMA6011. You find an example in the annex showing a comparison between an example documented in AGMA6011 and the corresponding results when using KISSsoft. The results correspond very well. Instructions written by Dr. Kissling, KISSsoft AG 1.2 Table of content 1 Calculation of gears in KISSsoft 10-2008 following AGMA6011-I03 ............................. 1 1.1 Executive summary .................................................................................................... 1 1.2 Table of content.......................................................................................................... 1 1.3 Document change record............................................................................................ 2 1.4 Abbreviations ............................................................................................................. 2 1.5 References .................................................................................................................. 2 2 Set up calculation in KISSsoft ........................................................................................... 2 2.1 Calculation method: ................................................................................................... 2 2.2 Lifetime and application factor .................................................................................. 3 Public EES KISSsoft GmbH Weid 10 / P.O. Box 6313 Menzingen Switzerland www.EES-KISSsoft.ch Title: No.: Date: Manager: HD Email: h.dinner@EES-KISSsoft.ch Revision: 0 Autor: HD Date: 10.3.09 Approved: HD Date: 10.3.09 C:\HD\EES\KISSsoft\20-Helical-Gearing\Turbo-Gears-AGMA6011.doc 1 of 8 2.3 Face load distribution factor:...................................................................................... 3 2.4 Data in button Details................................................................................................. 3 2.5 Required service factors as recommended in AGMA6011, Annex A ....................... 4 3 Verification......................................................................................................................... 7 3.1 Summary, for example 1 in AGMA6011 in Annexe E.............................................. 7 KISSsoft ..................................................................................................................................... 7 SERVICE FACTORS: ............................................................................................................. 7 AGMA........................................................................................................................................ 7 3.2 Summary, for example 3 in AGMA6011 in Annexe E.............................................. 8 KISSsoft ..................................................................................................................................... 8 SERVICE FACTORS: ............................................................................................................. 8 AGMA........................................................................................................................................ 8 1.3 Document change record Revision Dated Who Comments 0 10.3.09 HD Original document 1.4 Abbreviations [ ] Units 1.5 References [1] ANSI/AGMA6011-I03, Specification for High Speed Helical Gear Units [2] KISSsoft 10-2008 2 Set up calculation in KISSsoft 2.1 Calculation method: Use AGMA2101-D04 (metric) or AGMA2001-C95 (imperial) as shown below. Note : proposed by AGMA6011 is AGMA2101-C95 which is identical to AGMA2101-D04 C:\HD\EES\KISSsoft\20-Helical-Gearing\Turbo-Gears-AGMA6011.doc 2 of 8 Figure 2-1 Select calculation method 2.2 Lifetime and application factor Define required service life and application factor as shown below: Figure 2-2 Set lifetime and application factor 2.3 Face load distribution factor: For calculation of face load distribution factor, set data using (see marking in figure above) as follows: Figure 2-3 Parameters for calculation of face load distribution factor Check that: KHb >= 1.10 ! 2.4 Data in button Details Press button “Details” as shown in Figure 2-2. Enter Kv value (dynamic factor) manually. Use values as shown in table from AGMA6011: Figure 2-4 Values for Kv to be used along AGMA6011 C:\HD\EES\KISSsoft\20-Helical-Gearing\Turbo-Gears-AGMA6011.doc 3 of 8 Figure 2-5 Enter Kv value as per table above 2.5 Required service factors as recommended in AGMA6011, Annex A See in the annex A, table A.1 for recommended Service factors KSF (bending) and CSF (pitting) for the specific application. See Figure 2-6 and Figure 2-7. Important : In KISSsoft we recommend to introduce KSF and CSF as required safety factors. Note that you must introduce the required service factor for bending as KSF, , and the required safety factor for pitting as square root of CSF, KSFSF =min CSFSH =min . C:\HD\EES\KISSsoft\20-Helical-Gearing\Turbo-Gears-AGMA6011.doc 4 of 8 Figure 2-6 Recommended service/safety factors, part I C:\HD\EES\KISSsoft\20-Helical-Gearing\Turbo-Gears-AGMA6011.doc 5 of 8 Figure 2-7 Recommended service/safety factors, part II Enter required service / safety factors through module specific settings. In module specific settings, go to tab “Required safeties”. You may want to switch off the option “Safeties depending on size” as turbo gears typically have mn>2.00mm Figure 2-8 Go to module specific settings menu For example, let be KSF=CSF=1.4 . Then, introduce the required safety factors as shown in figure below. Remember: Introduce the required service factor for bending as KSF, but required safety factor for pitting as square root of CSF, KSFSF =min CSFSH =min . C:\HD\EES\KISSsoft\20-Helical-Gearing\Turbo-Gears-AGMA6011.doc 6 of 8 Figure 2-9 Enter values for required safety factors 3 Verification 3.1 Summary, for example 1 in AGMA6011 in Annexe E Below, a comparison between KISSsoft 10-2008 and the calculation example as shown in AGMA6011 is documented. As in AGMA example Calculated by KISSsoft Small difference between KHb as given in the example and calculated by KISSsoft 1.2648 1.301 Calculation by hand shows KHb = 1.3. Error in the AGMA example. Main result 3311 kW 3222 kW Small difference, because of the difference in KHb Figure 3-1 Results and comparison summary KISSsoft Bending strength power rating (hp) [Patu,Payu] 6239.97(4653.12 kW) 6049.97(4511.43 kW) Pitting resistance power rating (hp) [Pacu,Pazu] 6725.91(5015.48 kW) 6079.15(4533.19 kW) SERVICE FACTORS: Service factor for tooth root [KSF] 1.86 1.80 Service factor for pitting [CSF] 2.01 1.81 Service factor for gear set [SF] 1.80 Required service factors for bending [KSF] 1.40 Required service factors for pitting [CSF] 1.39 Transmittable power including required service factors (hp) 4321.41(3222.45 kW) AGMA Bending strength power rating (hp) [Patu,Payu] 4782 kW 4657 kW Pitting resistance power rating (hp) [Pacu,Pazu] 5163 kW 4635 kW Transmittable power including required service factors (hp) 4440 (3311 kW) C:\HD\EES\KISSsoft\20-Helical-Gearing\Turbo-Gears-AGMA6011.doc 7 of 8 Figure 3-2 Detailed results comparison 3.2 Summary, for example 3 in AGMA6011 in Annexe E Below, a comparison between KISSsoft 10-2008 and the calculation example as shown in AGMA6011 is documented. As in AGMA example Calculated by KISSsoft No difference in KHb as in example 1 1.2369 1.2369 Geometry (protuberance) is not completely defined; small differences in YJ1, YJ2 and ZI YJ1=0.4722 YJ2=0.4861 ZI=0.1730 YJ1=0.463 YJ2=0.477 ZI=0.170 Main result 17240 kW 17003 kW Small difference, because of the difference in geometry factors Figure 3-3 Results and comparison summary KISSsoft Bending strength power rating (hp) [Patu,Payu] 29642.95(22104.60 kW) 31342.55(23371.98 kW) Pitting resistance power rating (hp) [Pacu,Pazu] 34304.36(25580.59 kW) 37625.46(28057.12 kW) SERVICE FACTORS: Service factor for tooth root [KSF] 1.47 1.56 Service factor for pitting [CSF] 1.71 1.87 Service factor for gear set [SF] 1.47 Required service factors for bending [KSF] 1.30 Required service factors for pitting [CSF] 1.30 Transmittable power including required service factors (hp) 22802.27(17003.54 kW) AGMA Bending strength power rating (hp) [Patu,Payu] 22410 kW 23690 kW Pitting resistance power rating (hp) [Pacu,Pazu] 26060 kW 28580 kW Transmittable power including required service factors (hp) 17240 kW Figure 3-4 Detailed results comparison C:\HD\EES\KISSsoft\20-Helical-Gearing\Turbo-Gears-AGMA6011.doc 8 of 8 Calculation of gears in KISSsoft 10-2008 following AGMA6011- Executive summary Table of content Document change record Abbreviations References Set up calculation in KISSsoft Calculation method: Lifetime and application factor Face load distribution factor: Data in button Details Required service factors as recommended in AGMA6011, Annex A Verification Summary, for example 1 in AGMA6011 in Annexe E Summary, for example 3 in AGMA6011 in Annexe E