?2??1122.53??122.53??2.52 22978.63Mc2?31???0.051?0.042??0.042?0.045
31?122.53?????0.55-0.15-?1068.92?191.80 ??2?2978.63?2??0.135?0.051??0.051?0.107 3Mc3??4?1068.92?0.15?160.34 Mc4?1??0.135?0.17??0.153 21?5??0.15??1575.00?1068.92??37.96
2Mc5?2??0.17-0.135??0.135?0.1583
?6?810?0.17=137.7
Mc61??0.17=0.0852
1?7??0.17??1575.00?810.00??65.032
Mc72??0.17=0.1133
7fDy
??M??M??M??M?iMci1?70.461c12c23c34c4????????EIEI???5Mc5??6Mc6??7Mc7EIi?1? ２１
?11??0.18?388.05?34.922
Mc12??0.042?0.028
31??0.042?0.135??0.089 2?2?388.05??0.55-0.15??155.22
Mc2??31???0.55-0.15???810.42-388.05??84.47
22??0.135-0.042??0.042?0.104 3Mc3??4?810.42?0.15?121.56
Mc41???0.135?0.17??0.153 21?0.15??840.00?810.42??2.22 2?5? ２２
Mc5?2??0.17-0.135??0.135?0.158 3?6?432?0.17?73.44
Mc6?7?Mc71??0.17?0.0852
1?0.17??840.00?432.00??34.68 22??0.17=0.1133
7
??M??M??M??M?iMci1?52.571c12c23c34c4??fDz?-??-?-?EIEI???5Mc5??6Mc6??7Mc7EIi?1??87.9022fD?fDy?fDz??[fD]?3.3?10?4mEI
E?210?109Pa
I??64D4(1??4)?0.04D4
D
487.90?210?109?0.04?3.3?10?4
D2?7.49?10?2m
2) 根据E点的刚度对主轴进行校核，分别沿y、z轴加一单位力得到如下图所示弯矩图：
２３
?1??Mc11?0.18?122.53??11.032
2??0.04=0.0273
?2??1122.53??122.53??2.5222978.63
Mc2?31???0.05?0.04??0.04?0.0433
1?122.53?????0.55-0.15-?1068.92?191.80??2?2978.63? 2??0.12?0.05??0.05?0.0973
Mc3??4?1068.92?0.15?160.34
Mc4?1?0.12=0.06 2?51??0.15??1575.00?1068.92??37.962
1?0.12=0.08 3Mc5?5fEy
?iMci129.34????1Mc1??2Mc2??3Mc3??4Mc4??5Mc5?EIEIEIi?1?? ２４
1?12?0.18?388.05?34.92
M2c1?3?0.04=0.027
2?388.05??0.55-0.15??155.22
Mc2?12??0.12?0.04??0.08
3?12??0.55-0.15???810.42-388.05??84.47Mc3?23??0.12?0.04??0.04?0.107
4?810.42?0.15?121.56
Mc?142?0.12=0.06
15?2?0.15??840.00?810.42??2.22
M?1c53?0.12=0.04
２５?????