Response Analysis of Non-linear Vibration of High-VoltageTransmission Conductors
[1]ZHAO Gui-fengZHANG Meng,LI Jie,CHEN Huai.Response Analysis of Non-linear Vibration of High-VoltageTransmission Conductors[J].Journal of Zhengzhou University (Engineering Science),2013,34(03):72-75.[doi:10.3969/j.issn.1671-6833.2013.03.018]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
34
Number of periods:
2013 03
Page number:
72-75
Column:
Public date:
2013-05-31
- Title:
- Response Analysis of Non-linear Vibration of High-VoltageTransmission Conductors
- Keywords:
- transmission conductor; nonlinear vibration; primary resonance; subharmonic resonance; super-harmonic resonance; internal resonance due to closely spaced natural frequency
- CLC:
- TU351 TU32/399
- Abstract:
- To investigate the nonlinear vibration characteristics of high-voltage transmission conductors causedby geometrical nonlinearity ， the 3D dynamical equations of the horizontal suspended transmission conductorsare derived through the expanded Hamilton ’s principle. Then the equations are reduced to 2D dynamical e-quations and are diverted into a set of ordinary differential equations through Galerkin procedure by assuming amodel deflection shape. Coupled out-of-plane and in-plane responses of the conductors under harmonic exter-nal excitation are studied by means of fouth-orderRunge-Kutta method. The results show that the nonlinearityproduces the primary resonance，the subharmonic resonance and the superharmonic resonance. Energy transi-tion phenomena may take place between out-of-plane vibrations and in-plane vibrations because of the internalresonance due to closely spaced natural frequencies. When the out-of-plane vibration is initiated， the in-planevibration can be excited and the response is periodic，changing the natural vibration characteristics of the sys-tem simultaneously.
- References:
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- Similar References:
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Last Update:
1900-01-01