中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2014年
15期
2059-2063,2064
,共6页
压电陶瓷%迟滞特性%本构关系%Helmholtz自由能
壓電陶瓷%遲滯特性%本構關繫%Helmholtz自由能
압전도자%지체특성%본구관계%Helmholtz자유능
piezoceramic%hysteresis%constitutive relation%Helmholtz free energy
从能量的角度出发，运用本构方法，以热力学唯象理论为基础，通过对压电陶瓷晶体 Helm-holtz自由能关系进行推导而得出压电晶体的电场强度E与极化强度P 的本构关系。与实验结果的对比分析表明，所推导的E P 本构关系能够较为准确地在宏观上描述压电陶瓷晶体的迟滞特性。最后结合实验数据和E P 迟滞曲线对压电陶瓷晶体的 Helmholtz自由能和电滞回线进行了分析和讨论。
從能量的角度齣髮，運用本構方法，以熱力學唯象理論為基礎，通過對壓電陶瓷晶體 Helm-holtz自由能關繫進行推導而得齣壓電晶體的電場彊度E與極化彊度P 的本構關繫。與實驗結果的對比分析錶明，所推導的E P 本構關繫能夠較為準確地在宏觀上描述壓電陶瓷晶體的遲滯特性。最後結閤實驗數據和E P 遲滯麯線對壓電陶瓷晶體的 Helmholtz自由能和電滯迴線進行瞭分析和討論。
종능량적각도출발，운용본구방법，이열역학유상이론위기출，통과대압전도자정체 Helm-holtz자유능관계진행추도이득출압전정체적전장강도E여겁화강도P 적본구관계。여실험결과적대비분석표명，소추도적E P 본구관계능구교위준학지재굉관상묘술압전도자정체적지체특성。최후결합실험수거화E P 지체곡선대압전도자정체적 Helmholtz자유능화전체회선진행료분석화토론。
Based on the thermodynamics phenomenological theory,a hysteresis constitutive rela-tion of the electric field (E)and polarization (P)was deduced by analyzing the Helmholtz free energy relation of piezoceramic.The experimental hysteresis curve were compared with the academic calcula-tion.The results presented in the hysteresis constitutive relation can describe accurately the hysteretic behavior on a macro-scale.Additionally,the Helmholtz free energy and hysteretic loop were discussed by analyzing experimental data and curves.
