北华大学学报(自然科学版)
北華大學學報(自然科學版)
북화대학학보(자연과학판)
Journal of Beihua University(Natural Science)
2015年
5期
688-692
,共5页
蒙彦宇%关海爽%田瑶%高丽%于德民
矇彥宇%關海爽%田瑤%高麗%于德民
몽언우%관해상%전요%고려%우덕민
压电效应%驱动模型%波动理论%数值模拟
壓電效應%驅動模型%波動理論%數值模擬
압전효응%구동모형%파동이론%수치모의
piezoelectric effect%actuator modeling%wave theory%numerical simulation
基于PZT逆压电效应和结构动力学波动原理,建立粘贴式PZT驱动器与主体结构耦合简化力学模型及数学模型;考虑粘结层阻尼效应,建立PZT驱动方程并求解输出力表达式,确定驱动器力学与电学特性的对应关系;通过胶层材料特性、传递的切应力及其厚度变化对PZT驱动性能的影响进行算例分析,拟合出胶层传递剪切力与胶层厚度关系曲线,证明了运用所建立的驱动模型能有效地模拟检测PZT的逆压电规律,可为利用压电智能驱动器控制工程结构检测提供理论依据.
基于PZT逆壓電效應和結構動力學波動原理,建立粘貼式PZT驅動器與主體結構耦閤簡化力學模型及數學模型;攷慮粘結層阻尼效應,建立PZT驅動方程併求解輸齣力錶達式,確定驅動器力學與電學特性的對應關繫;通過膠層材料特性、傳遞的切應力及其厚度變化對PZT驅動性能的影響進行算例分析,擬閤齣膠層傳遞剪切力與膠層厚度關繫麯線,證明瞭運用所建立的驅動模型能有效地模擬檢測PZT的逆壓電規律,可為利用壓電智能驅動器控製工程結構檢測提供理論依據.
기우PZT역압전효응화결구동역학파동원리,건립점첩식PZT구동기여주체결구우합간화역학모형급수학모형;고필점결층조니효응,건립PZT구동방정병구해수출력표체식,학정구동기역학여전학특성적대응관계;통과효층재료특성、전체적절응력급기후도변화대PZT구동성능적영향진행산례분석,의합출효층전체전절력여효층후도관계곡선,증명료운용소건립적구동모형능유효지모의검측PZT적역압전규률,가위이용압전지능구동기공제공정결구검측제공이론의거.
We present mechanical and mathematical modeling, theoretical analysis and numerical simulation of the coupling modeling between the bonded PZT actuator and the main structure by the inverse piezoelectric effect and vibration principle of structure dynamics,respectively. In this study,a PZT patch is bonded on the surface structure. The equations of motion for PZT actuator are derived and then the output force expression is obtained in consideration of bonding layer-damping effect. The correspondence relation between the mechanical and electrical properties of PZT actuators is further determined. The influence of adhesive material properties,the transfer of shear stress and its thickness on the driving performance of PZT actuator is analyzed by the numerical example. The relationship curve between the shear force and adhesive layer thickness is obtained by fitting method. The results showed that the combining theoretical and numerical are conducted to validate the efficiency of the developed model and effectively simulate and detect inverse piezoelectric rule of PZT actuator, which provide theoretical basis for engineering structure detection technology by employing of piezoelectric smart actuator.