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Riveting structure interference amount fast prediction method

A riveting structure and prediction method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of high cost and long cycle, and achieve the effect of low cost, easy engineering application, and fast calculation speed

Active Publication Date: 2017-08-29
深圳未来技术软件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this requires repeated riveting experiments, which is costly and long-term, and the experimental results can only be used for rivet connections of specific material sizes.

Method used

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  • Riveting structure interference amount fast prediction method
  • Riveting structure interference amount fast prediction method
  • Riveting structure interference amount fast prediction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] In order to show the initial solution prediction method in this section more visually and to verify the effectiveness of the method, in this example, the rivet diameter is 3.97mm, the rivet rod length is 9.5mm, the rivet hole diameter on the riveting plate is 4.1mm, and the sheet thickness is 2mm. The friction coefficient between the rivet and the riveting plate is μ = 0.2, and the height of the control head is h = 2.28 mm. The material parameters of rivets and riveted plates are shown in Table 1 and Table 2.

[0029] Table 1 Rivet material-2117-T4 aluminum alloy

[0030]

[0031] Table 2 Riveting plate material-2024-T3 aluminum alloy

[0032]

[0033] The analysis model takes half the cross section of the rivet diameter and divides it into a triangular mesh. There are 231 nodes and 400 triangular elements in total.

[0034] The method for quickly predicting the interference amount of the riveting structure of this embodiment includes the following steps:

[0035] Step 1: Accor...

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Abstract

The invention relates to a riveting structure interference amount fast prediction method, and belongs to the technical field of riveting machining. The method comprises the following steps of 1, according to the thickness of a riveting plate and an initial configuration of a rivet, obtaining a foreboding configuration of a riveted rivet; 2, mapping a triangular grid on a rotary surface of the initial configuration of the rivet onto a rotary surface of the foreboding configuration of the rivet; 3, adopting the triangular grid of the rotary surface of the initial configuration of the rivet as an initial solution of the rotary surface of the configuration of the rivet, and through a finite element method, solving a final configuration of the rivet; 4, according to the final configuration of the rivet, obtaining a diameter of any height on a riveted rivet rod, wherein the difference of the diameter and the particle diameter of the rivet is the interference amount of the needed riveting structure. According to the riveting structure interference amount fast prediction method, the interference amount of the riveting structural can be fast predicted before riveting without actual riveting operation, and design personnel can be assisted in adjusting technological parameters and the like.

Description

Technical field [0001] The invention relates to a method for quickly predicting the interference amount of a riveting structure, and belongs to the technical field of riveting processing. Background technique [0002] For the assembly and manufacturing process of modern aircraft, mechanical connection is still the main connection technology, especially riveting. In the assembly of aircraft skins, wall panels and other parts, riveting is the most important connection form. Interference riveting is a connection technology that can strengthen the connection part. It can not only improve the fatigue performance of the structure, but also ensure good sealing. The compressive stress generated by interference at the riveted part can effectively inhibit the occurrence of fatigue cracks and delay fatigue failure. The interference stress generated in the riveting process is directly related to the amount of interference. Therefore, studying the amount of interference of the riveted struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/23
Inventor 鲍益东秦雪娇王珉陈文亮周佳恺丁咚李国梁王雯樊胜宝
Owner 深圳未来技术软件有限公司