振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2014年
13期
183-187,193
,共6页
赵星%刘响林%刘赛%刘金喜
趙星%劉響林%劉賽%劉金喜
조성%류향림%류새%류금희
非理想界面%功能梯度%双材料%“弹簧”模型%SH界面波
非理想界麵%功能梯度%雙材料%“彈簧”模型%SH界麵波
비이상계면%공능제도%쌍재료%“탄황”모형%SH계면파
imperfect interface%functionally graded%bi-material%spring model%SH interface wave
研究了非理想界面功能梯度压电/压磁双材料中SH界面波的传播特性,这里假定上、下半空间材料性能在垂直于界面的方向是按指数函数变化的。界面的机械条件由“弹簧”模型表征,即应力是连续的而位移是间断的;界面电磁学条件考虑电位移、电势、磁感、磁势连续和电学短路、磁学开路两种情况。推导了界面波显函形式的频散方程,通过数值计算表明了材料组合形式、界面非理想程度以及材料梯度变化对界面波相速度的影响。
研究瞭非理想界麵功能梯度壓電/壓磁雙材料中SH界麵波的傳播特性,這裏假定上、下半空間材料性能在垂直于界麵的方嚮是按指數函數變化的。界麵的機械條件由“彈簧”模型錶徵,即應力是連續的而位移是間斷的;界麵電磁學條件攷慮電位移、電勢、磁感、磁勢連續和電學短路、磁學開路兩種情況。推導瞭界麵波顯函形式的頻散方程,通過數值計算錶明瞭材料組閤形式、界麵非理想程度以及材料梯度變化對界麵波相速度的影響。
연구료비이상계면공능제도압전/압자쌍재료중SH계면파적전파특성,저리가정상、하반공간재료성능재수직우계면적방향시안지수함수변화적。계면적궤계조건유“탄황”모형표정,즉응력시련속적이위이시간단적;계면전자학조건고필전위이、전세、자감、자세련속화전학단로、자학개로량충정황。추도료계면파현함형식적빈산방정,통과수치계산표명료재료조합형식、계면비이상정도이급재료제도변화대계면파상속도적영향。
The propagation behavior of shear horizontal (SH)interfacial wave in a functionally graded piezoelectric (FGPE)/functionally graded piezomagnetic(FGPM)bi-material with an imperfect interface was investigated,where the materials properties were assumed to vary exponentially in the direction normal to the interface.The so-called “spring”model was used to describe the mechanical property of the interface,namely the stresses are continuous along the interface while the mechanical displacements are noncontinuous, and two cases on the interface were assumed:the electromagnetically permeable bonding and electromagnetically absorbent bonding.The dispersion equation of interface wave was derived in explicit form,and the numerical examples were provided to show the influences of the different material combinations,the imperfect degree of interface and the gradient variation of material constants on the phase velocity.