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Periodic structure multi-axial loading buckling behavior prediction method

A technology of periodic structure and prediction method, applied in the direction of instrumentation, geometric CAD, design optimization/simulation, etc., can solve problems such as analytical solutions to solve periodic structure problems, and achieve the effects of avoiding errors, changing errors, and improving correctness

Pending Publication Date: 2022-06-28
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Theoretical research on periodic structures can still only carry out qualitative analysis, and cannot completely solve the problems of periodic structures in practical applications through analytical solutions.

Method used

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  • Periodic structure multi-axial loading buckling behavior prediction method
  • Periodic structure multi-axial loading buckling behavior prediction method
  • Periodic structure multi-axial loading buckling behavior prediction method

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Embodiment Construction

[0039] The present invention will be described in further detail below with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0040] The basic flow of the present invention is as follows figure 1 As shown, a method for predicting the buckling behavior of periodic structures under multi-axial loading provided by an embodiment of the present invention includes the following steps:

[0041] Step S1: Design a simplified calculation model according to the opening method of the periodic structure:

[0042] This embodiment adopts the periodic structure of opening circular holes, and the periodic structure is as follows figure 2 shown. The structure is named 4.4.4.4, and the size period structure is shown in Table 1 below. Structure flow such as image 3 shown: first figure 2 The structure is simplified to a representative volume unit, and then each hole wall of the structure is further converted ...

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Abstract

The invention discloses a multi-axial loading buckling behavior prediction method for a periodic structure. The method comprises the following steps: S1, simplifying a periodic structure calculation model; s2, assuming a lateral deflection curve of periodic buckling deformation; s3, introducing a periodic structure transfer factor; s4, calculating the theoretical critical buckling strain of the periodic structure; S5, calculating the actual critical buckling strain of the periodic structure; s6, drawing a buckling strain error curve of the periodic structure; and S7, judging whether the periodic structure has different mode transitions or not so as to determine the application range of the theoretical critical buckling strain calculation formula. The invention provides a multi-axial loading buckling behavior prediction method for a periodic structure. The critical buckling strain of the periodic structure under multi-axial loading can be accurately calculated, and the application range of the calculation method is determined.

Description

technical field [0001] The invention relates to the technical field of periodic structures and computational mechanics, in particular to a method for predicting the buckling behavior of periodic structures under multi-axial loading. Background technique [0002] Periodic structure refers to a new structure obtained by periodically opening a two-dimensional or three-dimensional structure. Periodic structures undergo significant reversible deformation under different loading combinations, including mechanical loads, expansions, changes in temperature, and electrical signals. The many unique properties of periodic structures lay the foundation for their wide application in many different fields. In the fields of materials, structure, and mechanics, it is very common to design different hole arrangement patterns to obtain periodic structures with photonic, phononic and mechanical properties with specific properties using the idea of ​​tailoring bulk materials or complete films....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/23G06F119/14
CPCG06F30/17G06F30/23G06F2119/14
Inventor 李冬明孔令好潘金虎柳佳晖邹有云程鑫朱伟
Owner WUHAN UNIV OF TECH