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| Saint-Venant end effects for axisymmetric piezoelectric-piezomagnetic cylinder of sandwich structures |
| Received:May 18, 2012 Revised:August 28, 2012 |
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| DOI：10.7511/jslx201305016 |
| KeyWord:Principle of Saint-Venant decay rate piezoelectric-piezomagnetic sandwich structure cylinder axisymmetric |
| Author | Institution |
| 薛雁 |
北京交通大学 土木建筑工程学院 力学所, 北京 ;石家庄铁道大学 工程力学系, 石家庄 |
| 刘金喜 |
石家庄铁道大学 工程力学系, 石家庄 |
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| Abstract: |
| The decay rates of Saint-Venant end effects for semi-infinite axisymmetric piezoelectric-piezomagnetic cylinder of sandwich structures are studied.The end of the cylinder is subjected to a set of self-equilibrated magneto-electro-elastic loads.The inner and outer surfaces of the cylinder are mechanically free,electrically open or short as well as magnetically open or short.Based on the constitutive equations of the transversely isotropic piezoelectric and piezomagnetic materials in the axisymmetric cylinder coordinate system,the characteristic equations of the decay rate are derived and the numerical solutions are calculated.The results show that the boundary conditions,ratio of the inner radio to outer radio and the thickness ratio have the notable effects on the decay rates. |