第十一章_压杆稳定

1、 赠言赠言惟有道者能备患于未形也。惟有道者能备患于未形也。 管子管子 牧民牧民见微知著，睹始知终。见微知著，睹始知终。 袁康袁康越绝书越绝书 越绝德序外传记越绝德序外传记 maxNmaxAF crFF crFF crFF mmwBxylFB)(xfw FwxM )(FwxMEIw )( （a)EIFk 2(b)式的通解为式的通解为)c (cossinkxBkxAw ）02 wkw(b)B0, 0 wx0, wlx000cos0sin BBA0 0 klAsin0 0 A0sin kl0 00 0 wA,mmwBxylF), 2 , 1 , 0(0sin nnklkl), 2 , 1 , 0(2

2、 nnklEIFk), 2 , 1 , 0(222 nlEInF2cr2EIFl klkxklwsin2sin mmwBxylFlxwsin of lFcr2l()2cr22EIFl Fcrl0.3l0.7l( . )2cr207EIFl Fcrl2cr2EIFl l 22cr)(lEIF lFcrl/4l/4l/2( / )2cr22EIFl l 22crlEIF 22cr)7 . 0(lEIF 22cr)5 . 0(lEIF 22cr)2(lEIF 22cr)(lEIF 22cr)(lEIF zyxx8801000yzyxz880FFlxz880 x8801000yzykN6 .134)1

3、1(105 . 6101 . 214. 3)(2811222cr lEIF x8801000yzykN4 .406)88. 05 . 0(108 . 3101 . 214. 3)(2811222cr lEIF FFlxz880 AlEIAF22crcr)( ()()(/ )2222crcr222FEIEEiAlAll i il AIi 22cr E crcrAF 2crp2 E 1pE 2p E 916p206 10100200 10E scr ba 12 bas bas 2 21 12 22cr)(lEIF ba crscr 2 scr ba cr22cr E cr PsdF1.3 a BF

4、1.6 aCaFAal22 al3 . 11 aal12. 16 . 17 . 07 . 0 dF1.3 a BF1.6 aCaFA30mm20mmyz1p99E m0058. 002. 003. 0)02. 003. 0(1213 AIiyym0087. 0 AIizz15 . 0 zy 30mm20mmyz11586 zzzyyyilil kN5 .8922crcr zEAAF 1p100E 222244414)(64)(dDdDdDAIi 1004122 dDlilm6 . 11404. 005. 010022min lm2 . 143min ll122754 dDlil 5712. 1

5、240304s2bakN5 .155)(4)(22crcr dDbaAF stcrnFF stcrnFFn 1p86E 4dAIi 15 .62 il 2 .43s2baMPa301cr baMPa478crcr AF.stcrnFFn 5 51 11 1pD活塞杆活塞杆活塞活塞dN398042 pDFN23900stcr FnFAIi il pD活塞杆活塞杆活塞活塞d24222cr)(64)(ldElEIF 2004 dlil 97P1 E ABCF0.60.30.80 CM0 06 60 09 90 0 .sin.N FF8 . 06 . 08 . 0sin22 FF27272 2.N 1P99E 4dA