›› 2010, Vol. 30 ›› Issue (3): 60-63.DOI: 10.3969/j.issn.1006-1355.2010.03.016

• 振动理论与数值解法 • 上一篇    下一篇

《动载荷作用下壳体的结构声强分析》

曾国英,赵登峰   

  1. (西南科技大学制造学院,四川绵阳621010)
  • 收稿日期:2009-07-24 修回日期:1900-01-01 出版日期:2010-06-18 发布日期:2010-06-18
  • 通讯作者: 曾国英

《Sound Intensity Analysis of Shell Structures Subjected to Dynamic Loading》

ZENG Guo-ying,ZHAO Deng-feng   

  1. (School of Manufacturing, Southwest University of Science and Technology, Mianyang Sichuan621002, China)
  • Received:2009-07-24 Revised:1900-01-01 Online:2010-06-18 Published:2010-06-18
  • Contact: ZENG Guo-ying

摘要: 结构声强矢量图直观地给出了壳体表面各点能量传输的分布特性。首先推导了壳体局部坐标下的结构声强计算公式,应用坐标转换得到了结构声强的全局坐标表达式,用有限元计算了筒体和板壳组合结构的结构声强,并绘制出了矢量图。结果表明用有限元法对各种壳体的结构声强进行分析是十分有效的。

关键词: 振动与波, 结构声强, 有限元, 功率流, 坐标变换

Abstract: Structural sound intensity vector diagrams present directly and visually the energy distribution and propagation of the points on shells surface. First of all, the formula for calculating structural sound intensity in local coordinate systems is deduced. By using coordinate transformation, the expression of the structural sound intensity in the global coordinate system is obtained. The sound intensity of a composite shell structure is calculated using FEM, and the sound intensity diagrams are obtained. The results show that the FEM used in this paper is very effective for analysis of the sound intensities of shell structures.

Key words: vibration and wave, structural sound intensity, vibration control, finite element, power flow, coordinate transformation

中图分类号: