ansys耦合場壓電梁的模態(tài)分析

1、壓電梁的模態(tài)分析箭頭為壓電陶瓷的極化方向幾何尺寸：梁的長度Ll=300mm寬度W=30mm厚度Hl=2mm壓電片長度L=50mm寬度W=30mm厚度H=1mm采用pzt-5H壓電陶瓷片模態(tài)分析結(jié)果WSETiLfISlCommandFbOFIfflTiHOMRESiUIdTSFILE叭卄丹：ETTIHEZPPEOCUMUilTIUELOADSTEPGUHTEP123.1441d1213?.52122?否坊亠|煜13411454M.34155t8451Y1101?.s177$1211*51護(hù)丄右心寺石1費(fèi)Id17JSM.61H詞一階振型(f=23.144Hz)H1=2e-3!主結(jié)構(gòu)幾何尺寸H1=2

2、e-3!主結(jié)構(gòu)幾何尺寸H1=2e-3!主結(jié)構(gòu)幾何尺寸二階振型(f=137.52Hz)H1=2e-3!主結(jié)構(gòu)幾何尺寸H1=2e-3!主結(jié)構(gòu)幾何尺寸/prep7!PZT-5H材料特性參數(shù)mp,DENS,1,7700mp,perx,1,1700mp,pery,1,1700mp,perz,1,1470tb,ANEL,1tbdata,1,12.6E10,7.95E10,8.41E10tbdata,7,12.6E10,8.41E10tbdata,12,11.7E10tbdata,16,2.30E10tbdata,19,2.30E10tbdata,21,2.35E10tb,PIEZ,1tbdata,3,-6

3、.5tbdata,6,-6.5tbdata,9,23.3tbdata,11,17.0tbdata,13,17.0!定義主結(jié)構(gòu)的材料參數(shù)mp,dens,2,7800EX,2,209e9nuxy,2,0.3!密度,kg/m*3!介電常數(shù)!彈性勁度系數(shù),N/mA2!c11,c12,c13!c11,c33!c33!c44!c44!c66!壓電(應(yīng)力)常數(shù),C/mA2!e31!e31!e33!e15!e15H1=2e-3!主結(jié)構(gòu)幾何尺寸!定義壓電復(fù)合梁幾何模型(L=50mmW=30mmH=1mm)L=50e-3W=30e-3H=1e-3!壓電片幾何尺寸L1=300e-3H1=2e-3!主結(jié)構(gòu)幾何尺寸!建

4、立下層局部坐標(biāo)+Z方向!建立上層局部坐標(biāo)-Z方向!激活局部坐標(biāo)系11+y方向local,11local,12,180csys,11block,0,L1,0,W,O,H1block,0,L,0,W,0,-Hblock,0,L,0,W,H1,H1+Hvglue,allet,1,solid5,3et,2,solid45!將梁同壓電片粘結(jié)!定義壓電單元!定義主結(jié)構(gòu)單元H1=2e-3!主結(jié)構(gòu)幾何尺寸!采用映射劃分網(wǎng)格連接相鄰面asel,s,loc,z,0cm,CM_1,areacmplot,CM_1accat,CM_1asel,s,loc,z,H1cm,CM_2,areaaccat,CM_2!進(jìn)行網(wǎng)格劃

5、分LESIZE,ALL,5e-3,1,1,mat,1$type,1$esys,11!對下層壓電片網(wǎng)格劃分Vmesh,4mat,2$type,2$esys,11!對中間結(jié)構(gòu)網(wǎng)格劃分Vmesh,6mat,1$type,1$esys,12!對上層壓電片網(wǎng)格劃分vmesh,5nsel,s,loc,z,-H!定義下層電極cp,1,volt,all*get,n_bot,node,0,num,minnsel,s,loc,z,H+H1!定義上層電極cp,2,volt,all*get,n_top,node,0,num,minnsel,s,loc,z,0!壓電片中間面電壓耦合nsel,r,loc,x,0,Lcm,CM_3,nodensel,s,loc,z,H1nsel,r,loc,x,0,Lcm,Cm_4,nodecmsel,s,cm_3,nodecmsel,a,cm_4,nodecp,3,volt,allH1=2e-3!主結(jié)構(gòu)幾何尺寸fini/soluantype,modalmodopt,lanb,3mxpan