摘要
根据变截面杆纵向振动的波动方程,推导了悬链形超声变幅杆的频率方程,应用有限元法对变幅杆进行了模态分析,得到了共振频率、横向振动频率、位移节点和放大系数等重要参数。与理论计算值的比较表明,有限元法获得了很高的精度。
Basing on the longitudinal wave equation of a pole with varying sections,the frequency equation of a catenary pole is presented.Normal modes of the pole are analyzed utilizing finite element method.Some important characteristic parameters such as resonance frequency both transversely and longitudinally,vibration node and magnifying factor are obtained.The comparison with the results in theory shows the modal analysis has obtained accurate results.
出处
《机械与电子》
2004年第4期10-12,共3页
Machinery & Electronics
关键词
超声变幅杆
有限元法
模态分析
ultrasonic amplitude amplifier pole
finite element method
modal analysis
