Modeling method for quickly simulating bolt connection of a single-sided lap joint piece

A modeling method and bridge joint technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as low calculation efficiency and complicated process, so as to improve calculation efficiency, meet engineering needs, and shorten calculation time. the effect of time

Active Publication Date: 2019-04-19
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to design a modeling method for quickly simulating the bolt connection of single-sided lap joints, so as to solve the technical problems of complicated process and low calculation efficiency in the current bolt connection modeling

Method used

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  • Modeling method for quickly simulating bolt connection of a single-sided lap joint piece
  • Modeling method for quickly simulating bolt connection of a single-sided lap joint piece
  • Modeling method for quickly simulating bolt connection of a single-sided lap joint piece

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0030] The steps of the finite element modeling method for quickly simulating bolted connections of the present invention are as follows:

[0031] 1) First determine the thickness of the board to be connected (thickness of the upper board t 1 3mm, lower plate thickness t 2 is 4mm), material properties (E is 71000MPa) and the fasteners used are titanium bolts, diameter (d is 6mm), material properties (E 1 is 109000MPa),;

[0032] 2) Determine the fastener compliance coefficient of the single-sided lap joint;

[0033] for figure 2 For the simple shear connector shown, the elastic compliance coefficient C of the fastener can be determined by the following formula:

[0034]

[0035] In the formula: d—the diameter of the fastener;

[0036] t 1 — the thickness of the thinner plate;

[0037] t 2 — the thickness of the thicker plate;

[0038] E—Elastic ...

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Abstract

The invention belongs to the technical field of airplane structure modeling, and particularly relates to a modeling method for quickly simulating bolt connection of a single-sided lap joint piece. According to the modeling method, based on the tensile rigidity, the shearing rigidity and the force transmission characteristic of the bolt, the rigidity of the connecting piece is considered, and the model is simplified; According to the finite element model of bolt connection obtained in the PATRAN through the modeling method, the tensile rigidity, the shearing rigidity and the force transmissioncharacteristic of the bolt can be quickly and accurately reflected, the influence of a connected piece on the rigidity of the bolt is considered, the engineering requirement is met, the calculation time can be obviously shortened, and the calculation efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of aircraft structure modeling, and in particular relates to a modeling method for quickly simulating the bolt connection of single-sided lap joints. Background technique [0002] Bolted connections are widely used in various machinery, building facilities and weapon structures. In aircraft structural engineering, bolted connections are widely used in the assembly of aircraft parts. Various aerodynamic loads and inertial loads are transmitted between the interconnected structures of the aircraft through bolts to achieve the balance of the overall structure of the aircraft. Traditionally, the analytical method is generally used to simplify the analysis of the mechanical problems of bolted connections, and the corresponding structural design is carried out by combining the analysis results with sufficient experimental results. In this design analysis, it is assumed that after the joint is pre-tightened, the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 尹凯军张引利张自鹏
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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