發(fā)布時間：2018-06-18 07:21

  本文選題：超聲變幅桿 + 有限元分析��； 參考：《應用基礎與工程科學學報》2015年S1期

【摘要】：超聲變幅桿是功率超聲振動系統(tǒng)中的重要組成部件.本文在三維建模的基礎上對階梯形變幅桿進行了模態(tài)分析與諧響應分析.對階梯形變幅桿的軸向應力分布情況的分析表明,在大端和小端的連接處變幅桿受到的應力最大,容易出現(xiàn)疲勞斷裂.最后,本文用有限元法對帶工具的變幅桿進行了優(yōu)化設計.優(yōu)化的結果表明,隨著階梯形變幅桿過渡圓弧半徑的增大,振動的固有頻率也隨之增加,同時變幅桿最大應力分布向小端移動,且最大值變小.這表明增大過渡圓弧半徑可以達到階梯形超聲變幅桿的目的.
[Abstract]:Ultrasonic horn is an important component of power ultrasonic vibration system. In this paper, modal analysis and harmonic response analysis of stepped horn are carried out on the basis of 3D modeling. The analysis of the axial stress distribution of the stepped horn shows that the stress is the greatest at the junction between the big end and the small end, and the fatigue fracture is easy to occur. Finally, the finite element method is used to optimize the design of the luffing rod with tools. The results show that the natural frequency of vibration increases with the increase of the transition arc radius of the stepped horn, and the maximum stress distribution moves to the small end, and the maximum value becomes smaller. It shows that the step ultrasonic horn can be achieved by increasing the radius of the transition arc.
【作者單位】： 北京交通大學機械與電子控制工程學院;
【基金】：江蘇省科技支撐計劃(工業(yè))項目(BE2012134)
【分類號】：TG663

【參考文獻】

相關期刊論文 前2條

1 李成英,袁惠群,周爍;指數(shù)形超磁致伸縮換能器變幅桿設計[J];機械設計與制造;2001年06期

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本文編號：2034660