简谐激励下板壳结构加强筋仿生布局降噪方法

滕晓艳1,2,江旭东1,3,邹广平2,史冬岩1

振动与冲击 ›› 2016, Vol. 35 ›› Issue (6) : 1-6.

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (6) : 1-6.
论文

简谐激励下板壳结构加强筋仿生布局降噪方法

  • 滕晓艳1,2,江旭东1,3,邹广平2,史冬岩1
作者信息 +

A bionic approach of stiffer layout for plate and shell structure under harmonic excitation for noise reduction

  • TENG Xiao-yan1,2,JIANG Xu-dong1,3,ZOU Guang-ping2,SHI Dong-yan1
Author information +
文章历史 +

摘要

分析叶脉脉序形态的形成机理及构型规律,提取叶脉脉序生长的结构力学准则。以最小弹性应变能与抑制最大剪应力为主及次脉生长准则、以矢量平衡方程为脉序分歧准则建立具有叶脉分枝结构特征的板壳加强结构仿生设计模型。以降低谐振结构声辐射为目标,利用相似原理提出适合板壳结构加强筋布局设计的仿生脉序生长算法。并用典型薄板结构进行加强筋分布设计,验证板壳加强结构仿生布局方法在降噪中的可行性及有效性。

Abstract

Structural mechanical criterion for leaf vein growth is extracted by analyzing leaf venation morphogenesis. A primary vein growth is governed by minimal elastic strain energy while a secondary vein growth by releasing maximal shear stress. At each junction, leaf veins are oriented, as well as their width, according to a vector equilibrium equation. A bionic design model of reinforced plate/shell structure is established featured with leaf vein branched structure. By similar principle, a bionic venation growth algorithm is presented to address stiffer layout design for plate/shell structures to diminish structural acoustic radiation. Taking typical thin plate structures for instance, stiffer layout designs are implemented by bionic vein growth to verify its practicability and effectiveness in noise reduction.

关键词

板壳结构 / 仿生脉序 / 简谐激励 / 加强筋布局 / 降噪

Key words

plate/shell structure / bionic venation / harmonic excitation / stiffer layout / noise reduction

引用本文

导出引用
滕晓艳1,2,江旭东1,3,邹广平2,史冬岩1. 简谐激励下板壳结构加强筋仿生布局降噪方法[J]. 振动与冲击, 2016, 35(6): 1-6
TENG Xiao-yan1,2,JIANG Xu-dong1,3,ZOU Guang-ping2,SHI Dong-yan1 . A bionic approach of stiffer layout for plate and shell structure under harmonic excitation for noise reduction[J]. Journal of Vibration and Shock, 2016, 35(6): 1-6

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