阶梯型变幅杆圆弧过渡动力学分析  

Dynamics Analysis for Ladder Type Ultrasonic Transformers Arc Transition

作　　者：曾凡凡[1] 王时英[1] 吕明[1] 

机构地区：[1]太原理工大学机械工程学院,太原030024

出　　处：《机械设计与制造》2012年第10期210-212,共3页Machinery Design & Manufacture

基　　金：国家自然基金(5097519)

摘　　要：阶梯型变幅杆由于加工简单,易修正,放大比大等优点,应用较广,然而由于大小端过渡处的应力、位移分布比较复杂,从而导致谐振频率小于理论频率,一直制约着其在实际生产中的运用。本文通过Ansys有限元分析软件对阶梯形变幅杆大小端突变处添加不同的过渡圆弧,综合比较、分析不同圆弧下阶梯型变幅杆的共振频率,放大比和应力分布状况,从而从中找出不同阶梯形变幅杆对应的最佳过渡圆弧,为阶梯型变幅杆的后续研究和具体设计提供了一定的理论依据。Ladder type ultrasonic transformers ,because of simple processing, easy fixing,and amplifi- cation than big advantages ,are widely used,however,since the size of the stress and displacement in transi- tion distribution is more complex,it has been restricted in reality utilization.Through Ansys finite element analysis software,transition arc is added into different ultrasonic transformers stepped-weir.Comparing comprehensively of all sorts of resonant of ladder type ultrasonic transformers frequency under different cir- cular arc ,amplification ratio and stress distribution,so as to find out the best transition arc ,providing theo- retical basis for subsequent research of ladder type ultrasonic transformers and the specific design.

关 键 词：阶梯型 变幅杆 过渡圆弧 

分 类 号：TH16[机械工程—机械制造及自动化] V261.92[航空宇航科学与技术—航空宇航制造工程]