Fatigue test loading spectrum forming method and device and fatigue performance testing method

A technology of fatigue test and loading spectrum, which is applied in the direction of measuring devices, strength characteristics, instruments, etc., can solve the problems that the load loading control system cannot directly identify the structure, the fatigue load spectrum cannot be used, and the load is applied.

Pending Publication Date: 2021-05-07
BEIJING RES INST OF MECHANICAL & ELECTRICAL TECH
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Problems solved by technology

[0003] In view of the above analysis, the embodiment of the present invention aims to provide a method and device for forming a fatigue test loading spectrum and a fatigue performance tes

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  • Fatigue test loading spectrum forming method and device and fatigue performance testing method
  • Fatigue test loading spectrum forming method and device and fatigue performance testing method
  • Fatigue test loading spectrum forming method and device and fatigue performance testing method

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Embodiment Construction

[0024] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.

[0025] A specific embodiment of the present invention discloses a method for forming a loading spectrum of a fatigue test. Such as figure 1 As shown, the fatigue test loading spectrum forming method includes: step S102, determine the load direction applied on each loading section of the structural member to be tested and the load value corresponding to the load direction to form a load table; step S104, according to the load situation Table and load change time, generate multiple step instructions according to the load change sequence; and step S106, according to the structure of the fly-cont...

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Abstract

The invention relates to a fatigue test loading spectrum forming method and device and a fatigue performance testing method, belongs to the technical field of aircraft environment engineering, and aims to solve the problems that an existing load loading control system cannot directly recognize a structural fatigue load spectrum and cannot apply a load. The fatigue test loading spectrum forming method comprises the following steps of: determining the direction of load applied to each loading section of a to-be-tested structural member and a load value corresponding to the load direction to form a load condition table; according to the load condition table and the change time of the load, generating a plurality of step instructions according to a load change sequence; and according to the structure of a flight-continuation-flight fatigue load spectrum and different load working conditions, enabling the multiple step instructions to form load sequence block spectra corresponding to the load working conditions. With the fatigue test loading spectrum forming method and device and the fatigue performance testing method of the invention adopted, a structure fatigue load spectrum can be converted into a fatigue test loading spectrum identified by a loading control system, and the test efficiency is improved on the basis of ensuring the test accuracy and effectiveness.

Description

technical field [0001] The invention relates to the technical field of aircraft environment engineering, in particular to a method and device for forming a fatigue test loading spectrum and a fatigue performance test method. Background technique [0002] Structural fatigue load spectrum is an important condition and basis for fatigue performance assessment of structural parts. The application of fatigue load in the structural fatigue performance assessment test is realized through the load loading control system, but the load loading control system cannot directly identify the structural fatigue load spectrum and cannot perform load application. It is necessary to convert from the fatigue load spectrum (the fatigue load spectrum is the load or stress whose size and direction change periodically or irregularly with time) to the fatigue test loading spectrum, and convert it into a fatigue test loading spectrum that can be recognized by the loading control system. In this way,...

Claims

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Application Information

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IPC IPC(8): G01N3/00
CPCG01N3/00G01N2203/0073G01N2203/0208G01N2203/0676
Inventor 李原梁兵陈京建
Owner BEIJING RES INST OF MECHANICAL & ELECTRICAL TECH
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