• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Scantek, Inc.;National conference on noise control engineering;Institute of Noise Control Engineering of the USA >Vibro-acoustic source characterization of the tub in a washing machine
【24h】

Vibro-acoustic source characterization of the tub in a washing machine

机译：洗衣机内桶的振动声源特性

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Washing machine is now regarded as an essential home appliance and because it is often located inside a house, a lot of effort has been given to reduce the noise level and even the sound quality becomes an important issue. However, in spite of current low noise level, there is a persistent requirement by customers to develop a further quiet machine. Outer casing, tub, drum, and motor are main vibro-acoustic sources. In this work, the wave propagation and vibration formation in tub, a static plastic structure, are studied for characterizing the source behavior in transient and steady operation condition. For the identification of the tub source, the BEM-based NAH is implemented that employs array microphone in a uniform spacing of 0.05 m and boundary elements effective up to 1.4 kHz. In particular, the vibro-acoustic behavior at frequencies related to tub resonance and motor excitation at 3 RPM's and a RPM sweeping condition is of concern. Impact excitation at the rear of the motor is also given to investigate the structural wave propagation characteristics in time. The results are all visualized to make an easy understanding and identification of the actual hot spots for radiation and transmission paths.
机译：洗衣机现在被认为是必不可少的家用电器，并且由于它通常位于房屋内部，因此已经做出了很多努力来降低噪音水平，甚至声音质量也成为重要的问题。然而，尽管当前的噪声水平很低，但是客户仍然需要开发另一台安静的机器。外壳，浴缸，滚筒和马达是主要的振动声源。在这项工作中，研究了在静态塑料结构盆中的波传播和振动形成，以表征瞬态和稳定运行条件下的震源行为。为了识别桶声源，实施了基于BEM的NAH，该阵列采用阵列麦克风，间距为0.05 m，有效边界元素高达1.4 kHz。特别是，在3 RPM和RPM扫描条件下，与桶共振和电动机激励相关的频率下的振动声行为值得关注。还提供了在电动机后部的冲击激励，以便及时研究结构波的传播特性。结果全部可视化，以便轻松理解和识别辐射和传输路径的实际热点。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号