铸造用超声换能系统的动力学特性
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摘要
基于有限元法和试验测试,研究了铸造用超声换能系统动力学特性。借助ANSYS压电耦合分析功能,分析了该超声换能系统常温下的谐振频率、振型及端面输出振幅。进行了瞬态热传导仿真,得到了超声换能系统铸造条件下1 200s内温度分布,在此基础上求得了超声换能系统在不同温度场下的谐振频率。通过激光测振仪及铸造试验对仿真结果进行了验证,分析和试验结果对超声换能系统优化及频率跟踪功能设计具有一定的指导意义。
The dynamic characteristics of piezoelectric ultrasonic transducer for casting were studied based on finite element method(FEM) and experiments.The vibration mode and displacement distribution were analyzed by ANSYS piezoelectric couple function.The temperature distribution of ultrasonic transducer system under the casting situation in 1 200 s was gained by simulation of transient heat transfer.The resonant frequency of ultrasonic transducer of different temperature distribution was also obtained based on above analysis.The results of simulation are verified by the laser measurement vibrometer and casting experiments,providing some instructions for the design and optimization of ultrasonic transducer.
The dynamic characteristics of piezoelectric ultrasonic transducer for casting were studied based on finite element method(FEM) and experiments.The vibration mode and displacement distribution were analyzed by ANSYS piezoelectric couple function.The temperature distribution of ultrasonic transducer system under the casting situation in 1 200 s was gained by simulation of transient heat transfer.The resonant frequency of ultrasonic transducer of different temperature distribution was also obtained based on above analysis.The results of simulation are verified by the laser measurement vibrometer and casting experiments,providing some instructions for the design and optimization of ultrasonic transducer.
引文
[1]李英龙,李宝绵,刘永涛,等.铝合金超声铸造技术[J].中国有色金属学报,1999,9(4):719-722.
[2]Abramov V,Abramov O,Bulgakov V,et al.Solidification of aluminium alloys under ultrasonic irradiation using watercooled resonator[J].Materials Letters,1998,37(1):27.
[3]Eskin G I.Ultrasonic treatment of light alloy melts[M].Moscow:CRC Press,1998.
[4]Komarov S V,Kuwabara M,Abramov O V.High power ultrasonics in pyrometallurgy:current status and recent development[J].ISIJ international,2005,45(12):1765.
[5]黄运明.超声铸造中换能系统失谐现象分析及其设计研究[D].长沙:中南大学,2007.
[6]李晓谦,吴昊.铸造用超声换能系统阻抗模型的研究[J].压电与声光,2011,33(1):57-60.
[7]蒋日鹏,李晓谦,刘荣光,等.超声振动系统fs和Qm的实验测定及对比研究[J].压电与声光,2008,30(6):128-131.
[8]蒋日鹏,李晓谦,胡仕成.超声铸造工具杆端面优化设计及模态分析[J].机械设计,2008,25(6):62-64.
[9]栾桂冬,张金铎,王仁乾.压电换能器和换能器阵[M].北京:北京大学出版社,1990.
[10]颜鸣皋,刘伯操.中国航空材料手册(第二册)[M].北京:中国标准出版社,1988.
[11]谭真,郭广文.工程材料热物性[M].北京:冶金工业出版社,1991.
[12]周长城,胡仁喜,熊文波.ANSYS 11.0基础与典型范例[M].北京:电子工业出版社,2007.
[2]Abramov V,Abramov O,Bulgakov V,et al.Solidification of aluminium alloys under ultrasonic irradiation using watercooled resonator[J].Materials Letters,1998,37(1):27.
[3]Eskin G I.Ultrasonic treatment of light alloy melts[M].Moscow:CRC Press,1998.
[4]Komarov S V,Kuwabara M,Abramov O V.High power ultrasonics in pyrometallurgy:current status and recent development[J].ISIJ international,2005,45(12):1765.
[5]黄运明.超声铸造中换能系统失谐现象分析及其设计研究[D].长沙:中南大学,2007.
[6]李晓谦,吴昊.铸造用超声换能系统阻抗模型的研究[J].压电与声光,2011,33(1):57-60.
[7]蒋日鹏,李晓谦,刘荣光,等.超声振动系统fs和Qm的实验测定及对比研究[J].压电与声光,2008,30(6):128-131.
[8]蒋日鹏,李晓谦,胡仕成.超声铸造工具杆端面优化设计及模态分析[J].机械设计,2008,25(6):62-64.
[9]栾桂冬,张金铎,王仁乾.压电换能器和换能器阵[M].北京:北京大学出版社,1990.
[10]颜鸣皋,刘伯操.中国航空材料手册(第二册)[M].北京:中国标准出版社,1988.
[11]谭真,郭广文.工程材料热物性[M].北京:冶金工业出版社,1991.
[12]周长城,胡仁喜,熊文波.ANSYS 11.0基础与典型范例[M].北京:电子工业出版社,2007.