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A Method for Compiling Load Spectrum of Space Force System

A load spectrum and load technology, applied in the direction of instrumentation, design optimization/simulation, calculation, etc., can solve the problem of fatigue load spectrum not being better

Active Publication Date: 2019-11-15
CHINA AIRPLANT STRENGTH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the parallel force system, especially the preparation of the load spectrum of the aircraft wing surface, several mature partition methods and clear theoretical descriptions have been given in engineering, but for the space force system of the symmetrical test piece, how to quickly calculate its fatigue load spectrum There is no better way

Method used

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  • A Method for Compiling Load Spectrum of Space Force System
  • A Method for Compiling Load Spectrum of Space Force System
  • A Method for Compiling Load Spectrum of Space Force System

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Embodiment Construction

[0035] Invention principle:

[0036] The present invention uses computer software to carry out load simplification to the corresponding axial load on three projection planes (X-Z, Y-Z, X-Y) of the distributed aerodynamic load borne by the test piece with the interactive partition method, and then according to the position of the adhesive tape obtained by the simplification of the load The computer is used to paste and computer simulated loading on the finite element model of the test piece, so that the simplification of the load can not only meet the load accuracy requirements, but also meet the requirements of the three load directions. request for intervention. The dangerous position of the test piece can be determined by applying the local pressure load according to the sticking position of the adhesive tape, which provides a basis for the arrangement of the strain gauges in the test. At the same time, the computer simulation loading can also give the maximum normal stress ...

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Abstract

The invention provides a load spectrum compilation method for a space force system. The method is characterized by comprising the following steps of 1, performing load partitioning simplification: enabling Pix, Piy and Piz to be aerodynamic forces of a node i in an X direction, a Y direction and a Z direction in sequence; and calculating a total resultant force of an X-direction load, a Y-direction load and a Z-direction load in n load conditions according to provided distributed node loads, and corresponding pressure center coordinates, wherein for the n load conditions, resultant forces of m aerodynamic load nodes in the X direction, the Y direction and the Z direction are Fix, Fiy and Fiz.

Description

technical field [0001] The invention belongs to the technical field of aircraft structural strength, and relates to a method for preparing a load spectrum of a space force system. Background technique [0002] The compilation of any kind of fatigue strength test load spectrum is the key link to ensure the success of the test. For the parallel force system, especially the preparation of the load spectrum of the aircraft wing surface, several mature partition methods and clear theoretical descriptions have been given in engineering, but for the space force system of the symmetrical test piece, how to quickly calculate its fatigue load spectrum There is currently no better way. [0003] The method for preparing the load spectrum of the space force system proposed by the present invention is used for the first time, so the numerical simulation is carried out. The numerical simulation results show that this method is feasible, and the fatigue load spectrum prepared according to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 蒋军亮杨志斌丛琳华王孟孟
Owner CHINA AIRPLANT STRENGTH RES INST