• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aerospace science and technology >Structural shape parametric optimization for an internal structural-acoustic problem
【24h】

Structural shape parametric optimization for an internal structural-acoustic problem

机译：内部结构声学问题的结构形状参数优化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A structural shape optimization problem, with respect to the structural aspect ratio is developed in the context of an axisymmetric structural-acoustic system, consisting of an elastic dome coupled with an internal acoustic cavity, is analyzed in the low- and medium-frequency ranges. The dome is a thin shell considered as a three-dimensional continuum with a dissipative constitutive equation. The internal fluid is a dissipative acoustic fluid. The dome is submitted to an external wall pressure field modeled by a stochastic field. The cost function is related to the pressure field over an internal axisymmetric observation surface inside the acoustic cavity. We are interested in minimizing the internal noise over the observation surface with respect to the structural aspect ratio defining the geometric shape of the dome. This paper develops an analysis of the structural-acoustic shape optimization problem to determine wheter or not there exist values of the dome aspect ratio for which the internal noise is a minimum.
机译：在轴对称结构声学系统的背景下，针对结构纵横比提出了一种结构形状优化问题，该系统是在低频和中频范围内进行分析的，该系统由一个弹性穹顶和一个内部声腔组成。圆顶是一个薄壳，被视为具有耗散本构方程的三维连续体。内部流体是耗散的声学流体。穹顶受到由随机场模拟的外壁压力场。代价函数与声腔内部内部轴对称观察表面上的压力场有关。关于限定圆顶的几何形状的结构纵横比，我们有兴趣将观察表面上的内部噪声降至最低。本文对结构声学形状优化问题进行了分析，以确定是否存在内部噪声最小的圆顶长宽比值。

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