摘要
大功率圆管换能器在清洗、除垢、萃取等领域中有着广泛的应用。分析了一种新型圆管换能器,通过热胀冷缩原理给换能器施加预应力,充分发挥压电陶瓷的机械性能,达到大功率辐射要求。通过有限元仿真软件ANSYS对换能器的预应力进行仿真分析,着重分析了金属管材料、管壁厚度以及温度差与热应力的关系,根据优化结果选择合适的材料、尺寸制作出换能器初样品,换能器测试结果一致性较好。
High power cylindrical transducer is widely used in cleaning, contaminant separation and extraction.In order to exert the maximal mechanic capability of PZT for the purpose of high power radiation, a new type cylindrical transducer preloaded by heating the metal casing A new type cylindrical transducer preloaded by heating the metal casing is introduced in this article.Preload stress is analyzed by the finite element simulation software ANSYS.The re-lationship between the thermal stress and the attribute of the metal casing such as material, thickness and heating tem-perature is obtained through analysis.According to the optimized results, transducers have been made.Experiments show that the transducers have good performance.
出处
《声学技术》
CSCD
2010年第2期236-239,共4页
Technical Acoustics
关键词
圆管换能器
预应力
有限元(ANSYS)
热应力
cylindrical transducer
preload stress
finite element method（ANSYS）
thermal stress
