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作者:

Shao, Dong (Shao, Dong.) | Zhang, Yilun (Zhang, Yilun.) | Tao, Yongqiang (Tao, Yongqiang.) | Zhao, Yonghui (Zhao, Yonghui.) | Cao, Yuan (Cao, Yuan.)

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摘要:

A semi-analytical method and related experiments are present in this paper to investigate the free vibration characteristics of the closed-coupled plates with arbitrary spatial coupling angles and curved edges, which are the widely used structural form but researched for the first time. By combining the penalty function method with flexible setting virtual spring stiffness functions and the comprehensive relative motion relation matrices along the edges of the plates system, various types of boundary and spatial coupling connection conditions in practical engineering can be constructed. The semi-analytical solution formulas for the entire vibration model are established by using the first-order shear deformation theory (FSDT) and the two-dimensional Jacobian differential quadrature method (JDQM). To fulfill the requirements of integral operations for displacement approximation functions, the irregular domain mapping technique is employed to transform the irregular solving domain into the regular basic domain. The accuracy and applicability of the present method in predicting eigenfrequencies and mode shapes are proved by hammer modal tests concerning four pyramid/frustum-like built-up plates, comparisons with results from the open literature, as well as the finite element method (FEM) simulations of several specially designed cases. Moreover, many meaningful conclusions are drawn regarding the effects of spatial geometric parameters on the free vibration characteristics of spatially closed-coupled plates with curved edges.

关键词:

Hammer modal test Arbitrary connection and boundary conditions Spatially closed-coupled plates with curved Virtual spring stiffness functions Free vibration Jacobian differential quadrature method edges

作者机构:

  • [ 1 ] [Shao, Dong]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 2 ] [Zhang, Yilun]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 3 ] [Zhao, Yonghui]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 4 ] [Tao, Yongqiang]China Aerosp Sci & Ind Corp, Beijing Aerosp Technol Inst, Beijing 100074, Peoples R China
  • [ 5 ] [Cao, Yuan]Naval Res Inst, Beijing 100161, Peoples R China

通讯作者信息:

  • [Shao, Dong]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China;;

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来源 :

JOURNAL OF SOUND AND VIBRATION

ISSN: 0022-460X

年份: 2023

卷: 570

4 . 7 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:19

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