Ｂ９超声塑焊变幅器的有限元分析陆建华，林仲茂（中国科学院声学研究所北京·１０００８０）超声塑料焊接常常需要大尺寸而形状不规则的变幅器（焊头）。这种变幅器的设计目前大多用一维理论估算或靠经验设计，然后进行测量修正。有时要经多次反复设计加工，既费时又费材... B9 Finite element analysis of ultrasonic plastic welding horn LU Jian-hua, LIN Zhong-mao (Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, China) Ultrasonic plastic welding often requires large size and irregular shaped horn (welding head). At present, most of the design of such a horn is estimated by one-dimensional theory or by empirical design, and then the measurement is corrected. Sometimes after many repeated design and processing, both time-consuming and costly materials ...