西北大学学报（自然科学版）
西北大學學報（自然科學版）
서북대학학보（자연과학판）
JOURNAL OF NORTHWEST UNIVERSITY(NATURAL SCIENCE EDITION)
2010年
1期
34-38
,共5页
超声换能器%扭转振动%机电等效电路%共振频率
超聲換能器%扭轉振動%機電等效電路%共振頻率
초성환능기%뉴전진동%궤전등효전로%공진빈솔
ultrasonic transducer%torsional vibration%electro-mechanical equivalent circuit%resonance frequency
目的 对一种扭转振动复合超声换能器进行研究.方法 仿真建模,有限元分析法.结论 建立了此换能器机电类比等效电路模型,推导了此换能器的扭转振动频率方程的解析式及共振频率的计算公式;分析了换能器的共振频率与其几何尺寸之间的关系,对该换能器的扭转振动模态进行了分析.结果 换能器的共振频率在其他尺寸不变时随着外环金属薄圆环的半径增大而降低,随着内环金属薄圆环的内半径减小而降低.
目的 對一種扭轉振動複閤超聲換能器進行研究.方法 倣真建模,有限元分析法.結論 建立瞭此換能器機電類比等效電路模型,推導瞭此換能器的扭轉振動頻率方程的解析式及共振頻率的計算公式;分析瞭換能器的共振頻率與其幾何呎吋之間的關繫,對該換能器的扭轉振動模態進行瞭分析.結果 換能器的共振頻率在其他呎吋不變時隨著外環金屬薄圓環的半徑增大而降低,隨著內環金屬薄圓環的內半徑減小而降低.
목적 대일충뉴전진동복합초성환능기진행연구.방법 방진건모,유한원분석법.결론 건립료차환능기궤전류비등효전로모형,추도료차환능기적뉴전진동빈솔방정적해석식급공진빈솔적계산공식;분석료환능기적공진빈솔여기궤하척촌지간적관계,대해환능기적뉴전진동모태진행료분석.결과 환능기적공진빈솔재기타척촌불변시수착외배금속박원배적반경증대이강저,수착내배금속박원배적내반경감소이강저.
Aim A type of torsional vibration compound ultrasonic transducer is studied in this paper. Methods Emulational model and FEM is used. Results The electro-mechanical equivalent circuit of the compound ultrasonic transducer is established. The torsional vibration frequency equation and resonance frequency calculation formula of the transducer are obtained. The relation between resonance frequency and size of the transducer is analyzed. The mode of ultrasonic transducer is analyzed by FEM. Conclusion The resonance frequency of the transducer is augment with the radius of outer metal ring decrease, and minished with the radius of inner metal ring decrease when other sizes of the transducer are not chang.
