当前位置: X-MOL 学术Strength Mater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Resonances in the System of Shield-Coupled Hydroacoustic Piezoceramic Transducers
Strength of Materials ( IF 0.7 ) Pub Date : 2020-02-13 , DOI: 10.1007/s11223-020-00134-5
I. B. Chepkov , S. V. Lapitskii , A. P. Zinkovskii , A. G. Leiko , A. V. Derepa

Outcomes of the stress state investigations are presented for cylindrical hydroacoustic piezoceramic transducers on their operation in the shielded electroacoustic systems, which is defined by the maximum amplitudes of their vibration velocities and physical parameters of piezoceramic materials. The calculation model of the shield–transducer system takes account of the coupling between the electric, mechanical, and acoustic fields of its piezoceramic transducers in the energy conversion process and of multiple interchange with radiated and reflected acoustic waves between the system elements on the formation of acoustic fields in the environment. For the sector shield–transducer system, the amplitude-frequency characteristics of dynamic stresses in the transducers were established to be quantitatively related to the electrophysical parameters of their piezoceramic materials. In this case, different vibration modes of the system are shown to be possibly excited, which are just responsible for the stress state of transducers. A significant increase in dynamic stresses of the transducers with the natural frequencies of the above vibration modes of the system, much larger as compared to those in isolated transducers, is especially dangerous. It is caused by a series of new resonances due to the interaction of system elements over the acoustic field in the environment as a result of multiple interchange with radiated and reflected acoustic waves. Maximum dynamic stresses are established to be dependent on the arrangement of transducers in the sector of the circular shield–transducer system and their energy conversion efficiency.

中文翻译:

屏蔽耦合水声压电陶瓷换能器系统中的共振

给出了圆柱形水声压电陶瓷换能器在屏蔽电声系统中的工作状态下应力状态研究的结果,该结果由其振动速度的最大值和压电陶瓷材料的物理参数确定。屏蔽换能器系统的计算模型考虑了其压电陶瓷换能器在能量转换过程中的电场,机械场和声场之间的耦合,并考虑了在系统结构形成时系统元素之间的辐射声波和反射声波多次交换。环境中的声场。对于扇区屏蔽换能器系统,建立了换能器中动态应力的幅频特性,以使其与其压电陶瓷材料的电物理参数定量相关。在这种情况下,可能会激发系统的不同振动模式,这些振动模式仅负责换能器的应力状态。与系统的上述振动模式的固有频率相比,换能器的动态应力的显着增加(与隔离的换能器相比要大得多)特别危险。这是由于与辐射和反射声波多次交换而导致的系统元件在环境中在声场上的相互作用而引起的一系列新的共振所致。
更新日期:2020-02-13
down
wechat
bug