摘要
在理论分析弹性柱体纵向振动模态的基础上,利用有限元软件ATILA得到了T-D材料棒在ΔE和阶跃效应及两者共同影响下的一阶纵向振动频率,计算得到了T-D材料棒端面纵向振动位移随线圈激励频率变化的输出曲线。分析讨论了ΔE效应及阶跃效应对T-D材料棒一阶纵向振动模态的影响,发现了线圈激励频率位于T-D材料棒一阶纵向振动固有频率附近时对端面纵向振动幅值的放大作用。为合理选择T-D材料棒的预应力和偏置磁场大小,用以使T-D材料棒在期望频率范围内获得理想输出性能提供了较为准确的依据。
On the basis of theoretical analysis of longitudinal vibration mode of T-D rod, the first order lon-gitudinal vibration modal of T-D rod under the influence ofΔE effect and step effect was calculated by finite element analysis software ATILA, calculated the T-D rod end longitudinal vibration displacement output curve with the change of coil excitation frequency. Discussed the influence of the ΔE effect and step effect to T-D rod first-order longitudinal vibration mode, found the amplitude amplification effect of coil excitation frequency that around the first order longitudinal vibration of T-D material rod to T-D rod end longitudinal vibration. Provided more accurate basis for reasonable selection of prestress and bias magnetic of T-D rod, to get the ideal T-D rod output performance at the expected frequency range.
出处
《组合机床与自动化加工技术》
北大核心
2017年第1期54-56,共3页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金资助项目:面向热声制冷系统的微型磁致伸缩换能器基础问题研究(51365033)
