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Method for determining layout of flat plate structure under action of pure bending load

A layout method and pure bending technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems affecting the design cycle, low efficiency, high stress, etc., and achieve the effect of advancing the design work schedule and simplifying calculations

Pending Publication Date: 2021-12-24
XI'AN AIRCRAFT INTERNATIONAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional design method limits the effect of subsequent size design because the initial layout design is related to the designer's experience. The final result often has heavy structural weight, low stiffness, and large stress. Due to the uncertainty of layout design, Leads to inefficiencies that severely impact design cycles

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  • Method for determining layout of flat plate structure under action of pure bending load
  • Method for determining layout of flat plate structure under action of pure bending load
  • Method for determining layout of flat plate structure under action of pure bending load

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Embodiment Construction

[0043] Such as Figure 1-4 As shown, adopt the present invention, to determine the layout method step of flat plate structure under the action of pure bending load as follows:

[0044] Known: material elastic modulus E = 70000MPa, material elastic Poisson's ratio μ = 0.33, plate thickness t = 2mm, plate width a = 500mm, plate length l = 600mm, plate panel pure bending load M = 2500N m 2 .

[0045] Step 1: Calculate the maximum working stress of the flat panel according to the pure bending load of the flat panel;

[0046]

[0047] Step 2: Obtain the axial compressive load expression of the flange according to the maximum working stress of the flat panel;

[0048] N 1 = σ c b 2 =300b 2 N

[0049] Step 3: Obtain the moment of inertia expression of the flange according to the Euler formula of the flange and the axial compressive load expression of the flange;

[0050]

[0051] Step 4: According to the expression of the moment of inertia of the flange, the expression ...

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Abstract

The invention discloses a method for determining the layout of a flat plate structure under the action of a pure bending load. The method overcomes the defects of a finite element method which is commonly used at present, so that the calculation is simpler and more convenient; in addition, by means of the method, the slab structure layout can be rapidly obtained in the initial stage of design, and the design work progress is greatly advanced.

Description

technical field [0001] The invention relates to the technical field of aircraft structure design, in particular to a method for determining the layout of a flat plate structure under pure bending load. Background technique [0002] In aircraft structural design, due to the needs of structural assembly, docking or functions (such as loading and unloading, etc.), the fuselage is often arranged with more flat structures. For the design of flat plate structures, the traditional design method is that the designer completes the preliminary layout design based on his own experience, establishes the finite element model, and then calculates the stress distribution of the structure according to the severe load, adjusts the structure size according to the stress distribution, and iterates step by step to obtain final structural form. The traditional design method limits the effect of subsequent size design because the initial layout design is related to the designer's experience. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/20G06F119/14
CPCG06F30/15G06F30/20G06F2119/14Y02T90/00
Inventor 卢茜杨宝华师鹏
Owner XI'AN AIRCRAFT INTERNATIONAL