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Method for calculating failure load of integral reinforced wallboard

A technology for failure load and reinforced wall panels, applied in the field of machinery, can solve the problems of low calculation value of the failure load of the overall wall panel and low calculation value of rib pressure loss stress, etc.

Pending Publication Date: 2020-08-18
CHINA AIRPLANT STRENGTH RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The original separation method in the project is to cut the ribs from the inner surface of the skin. This separation method makes the calculation value of the pressure loss stress of the ribs low, and also leads to the low calculation value of the failure load of the overall wall panel.

Method used

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  • Method for calculating failure load of integral reinforced wallboard
  • Method for calculating failure load of integral reinforced wallboard
  • Method for calculating failure load of integral reinforced wallboard

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Embodiment Construction

[0051] This application provides a method for calculating the failure load of an integrally reinforced wall plate, so that the calculated value is close to the test value.

[0052] Due to the seamless connection between the ribs and the skin, the structural ultimate strength of the overall stiffened plate is significantly greater than that of the same type of riveted stiffened plate. In the past, the engineering calculation methods of structural failure loads were based on the test data of riveted stiffened plates. Therefore, most methods are no longer suitable for integrally stiffened plates. Especially when the skin is thick, the calculated value is significantly smaller,

[0053] Aiming at the above problems, a new method for calculating the failure load of integrally stiffened plates is proposed. When separating the ribs, the separation line between the skin and the ribs is taken at the variable section of the skin, that is, at the edge of the skin boss (see Figure 1-Fi...

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Abstract

The invention provides a method for calculating a failure load of an integral reinforced wallboard. The method comprises the following steps: separating ribs from the integral reinforced wallboard; calculating the pressure loss stress of the ribs, calculating the breaking stress of the stiffened and skin composition column according to the pressure loss stress of the ribs, and calculating the loadF column of the skin and rib composition column according to the breaking stress of the stiffened and skin composition column; calculating a load F skin borne by the skin; and calculating the failureload of the whole stiffened plate according to the load F column and the F skin.

Description

technical field [0001] The invention belongs to the field of machinery, and in particular relates to a method for calculating the failure load of an integrally reinforced wall plate. Background technique [0002] From the point of view of the load action form, the failure of integrally reinforced wall panels is generally divided into: 1) compression failure; 2) shear failure; 3) compression-shear composite failure, etc. Among them, the failure of integrally stiffened panels under axial compressive loads has always been a concern of aircraft designers. At present, there are generally three methods for calculating the failure load of integrally stiffened panels under axial compression loads, namely the parabolic approximation method, the Johnson-Euler equation, and the ultimate load method. The Johnson-Euler equation has been widely used in engineering. [0003] Compared with the test, it is found that when the skin of the overall stiffened plate is thicker (the thickness of ...

Claims

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Application Information

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IPC IPC(8): G06F30/17
CPCG06F30/17Y02T90/00
Inventor 吴存利张国凡聂小华
Owner CHINA AIRPLANT STRENGTH RES INST