对一个具有可变曲率外的I类弹性变压器进行数值和实验研究
Depeng Li1, Yu Lan1, Tianfang Zhou1
1National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China.
The Journal of the Acoustical Society of America
|September 19, 2023
概括
通过引入可变曲率外,I类柔性变压器可以实现宽带特征. 这种设计减轻了声压取消,提高了水下声学应用的性能.
科学领域:
- 声学 声学 在声学方面
- 机械工程 机械工程
- 海军建筑 海军建筑
背景情况:
- 由于外振动的声音压力取消,I类弹性变频器表现出性能谷.
- 这种限制限制了它们在水下声系统中的宽带能力.
研究的目的:
- 为了调查一类I级柔应变频器响应谷的原因.
- 提出一种新的传感器设计,以实现宽带特征.
主要方法:
- 对三维等效辐射声场的分析.
- 解决一个革命外的三维振动方程与缩小维度.
- 设计和制造一个可变曲率外传感器原型.
主要成果:
- 确定了对正负高斯曲率的振动状态依赖性.
- 开发了一种可变曲率外传感器,可以避免声音压力取消.
- 实现了宽带特征,带内波动<8dB,带宽>5.4kHz.
结论:
- 可变曲率外设计有效地解决了传统的I类柔性变压器的局限性.
- 拟议的传感器成功地将多个振动模式结合起来,以提高性能.
- 实验验证证证实了实际应用的宽带能力.
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