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Airfoil main structure test load processing method

A processing method and technology of the main structure, which can be used in aircraft component testing, testing material strength using a stable bending force, testing material strength using a stable shear force, etc. There is no uniform standard for the determination of a reasonable plan, so as to achieve the effect of improving processing efficiency and ensuring accuracy

Active Publication Date: 2020-05-08
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Application Information

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Problems solved by technology

[0003] The above process is often an iterative process, which requires multiple rounds of adjustments to the test load to find a reasonable solution between ensuring theoretical accuracy and test implementability, which is time-consuming and labor-intensive, and there is no way to determine a reasonable solution. Uniform standards, lack of objectivity

Method used

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  • Airfoil main structure test load processing method
  • Airfoil main structure test load processing method
  • Airfoil main structure test load processing method

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Embodiment Construction

[0038] The present invention will be further introduced below in conjunction with accompanying drawing, a kind of airfoil main structure test load processing method of the present invention, comprises the following steps:

[0039] Step 1: Calculate the test load P for each test loading point j , specifically: for a given load situation, the nodal load F on the airfoil i Treat it to the test loading point according to the energy method, and calculate the test load P j , test load P j The calculation formula is:

[0040]

[0041] Where: m is the number of theoretical nodes, P i,j The load assigned to the i-th theoretical node load on the j-th test loading point is calculated by the following formula:

[0042]

[0043] Where: j is the number of test loading points, coefficient λ i , lambda i,x and lambda i,z It is obtained by solving the following system of equations:

[0044]

[0045] in: x j and y j The coordinate value of the loading point for the jth tes...

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Abstract

The invention discloses an airfoil main structure test load processing method and provides a test load processing method and process as well as an evaluation method. Therefore, the feasibility of a test loading load can be evaluated objectively , the loading accuracy can be ensured and the load processing efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of aviation strength, and in particular relates to a test load processing method for an airfoil main structure. Background technique [0002] When carrying out ground static tests of aircraft structures, considering the feasibility of the test loading scheme, it is often necessary to process the theoretical load to obtain a test load that is easy to implement, but the difference between the test load and the theoretical load will lead to the stress of the airframe structure. Different, in order to ensure the accuracy of force transmission and the safety of the structure, it is necessary to check the structural stress distribution under the test load state and the safety check of the local structure at the loading point. [0003] The above process is often an iterative process, which requires multiple rounds of adjustments to the test load to find a reasonable solution between ensuring theoretical accuracy an...

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Application Information

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IPC IPC(8): G01N3/20G01N3/24B64F5/60
CPCG01N3/20G01N3/24B64F5/60G01N2203/0216
Inventor 任善杜凯张丽程文杰
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA