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Substructure response reconstruction method and system, and storage medium

A seed structure and sub-structure technology, which is applied in special data processing applications, complex mathematical operations, instruments, etc., can solve the problems of difficult convergence of response reconstruction and large amount of calculation

Active Publication Date: 2021-03-30
CENT SOUTH UNIV
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Problems solved by technology

[0004] The invention provides a substructure response reconstruction method and system, and a computer-readable storage medium to solve the technical problems of the existing response reconstruction method that the response reconstruction is difficult to converge and the amount of calculation is large

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  • Substructure response reconstruction method and system, and storage medium
  • Substructure response reconstruction method and system, and storage medium

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Embodiment Construction

[0095] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered below.

[0096] Such as figure 1 As shown, the preferred embodiment of the present invention provides a substructure response reconstruction method, which is implemented based on model condensation and main mode expansion. The substructure response reconstruction method specifically includes the following steps:

[0097] Step S1: divide the finite element model into substructures according to the position of the response collection point;

[0098] Step S2: dividing the degree of freedom of each substructure;

[0099] Step S3: performing modal coordinate transformation on each substructure;

[0100] Step S4: Coupling each substructure after modal coordinate transformation into a superelement model;

[0101] Step S5: solving the mode shape matrix of the superelement model...

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Abstract

The invention discloses a substructure response reconstruction method and system, and a storage medium. The method employs model condensation to generate a super-unit model based on a finite element model, does not need to consider the boundary conditions of all substructures, can better adapt to the dynamic response reconstruction of a large-scale complex engineering structure, and expands a current time domain reconstruction method based on EMD decomposition, the modal synthesis is used in the response reconstruction method for the first time, the response of each main modal in the whole substructure is reconstructed based on the interface response of the known substructure, the response reconstruction only needs to be carried out under the condensed substructure, and then the main modeof a super-unit model is expanded to the response of the degrees of freedom of all internal units in the finite element model through coordinate back calculation, so that the accuracy is ensured, thereconstruction efficiency is greatly improved, the computer memory is saved, and the analysis speed is high.

Description

technical field [0001] The present invention relates to the technical field of structural health monitoring, in particular, to a substructure response reconstruction method and system, and a computer-readable storage medium. Background technique [0002] In recent years, engineering accidents have occurred frequently, such as house collapses, bridge breaks, etc., resulting in large economic damage and casualties. Therefore, people pay more and more attention to the health of structures. Structural health monitoring (SHM) is a key issue in engineering systems, civil infrastructure, and smart structures in recent years. In actual engineering, the sensors deployed on the structure are often used to collect data to monitor the health status of the structure and evaluate its service life. However, most engineering structures have complex geometric shapes and it is difficult to arrange sensors. Therefore, many scholars at home and abroad have proposed a method to reconstruct the ...

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Application Information

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IPC IPC(8): G06F30/23G06F30/13G06F17/11G06F119/02G06F119/14
CPCG06F30/23G06F30/13G06F17/11G06F2119/02G06F2119/14Y02E60/00
Inventor 邹云峰卢玄东付正亿何旭辉阳劲松
Owner CENT SOUTH UNIV
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