本文選題：超聲變幅桿 + 有限元分析　； 參考：《應(yīng)用基礎(chǔ)與工程科學(xué)學(xué)報(bào)》2015年S1期

【摘要】：超聲變幅桿是功率超聲振動(dòng)系統(tǒng)中的重要組成部件.本文在三維建模的基礎(chǔ)上對(duì)階梯形變幅桿進(jìn)行了模態(tài)分析與諧響應(yīng)分析.對(duì)階梯形變幅桿的軸向應(yīng)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(yīng)力最大,容易出現(xiàn)疲勞斷裂.最后,本文用有限元法對(duì)帶工具的變幅桿進(jìn)行了優(yōu)化設(shè)計(jì).優(yōu)化的結(jié)果表明,隨著階梯形變幅桿過渡圓弧半徑的增大,振動(dòng)的固有頻率也隨之增加,同時(shí)變幅桿最大應(yīng)力分布向小端移動(dòng),且最大值變小.這表明增大過渡圓弧半徑可以達(dá)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(xué)機(jī)械與電子控制工程學(xué)院;
【基金】：江蘇省科技支撐計(jì)劃(工業(yè))項(xiàng)目(BE2012134)
【分類號(hào)】：TG663

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

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本文編號(hào)：2034660