Aviation hydraulic pipeline development automatic interactive analysis pre-processing module
A hydraulic pipeline and interactive analysis technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of large and complex ABAQUS script interface object models, avoid repeated modeling, save time, avoid The effect of wrong input
Active Publication Date: 2019-10-25
伊顿上飞(上海)航空管路制造有限公司
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Problems solved by technology
Therefore, the object model of the ABAQUS scripting interface will be larger and more complex
Method used
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Embodiment 1
[0058] Embodiment 1: Take the piping system analysis of the wing part of the aviation hydraulic system as an example, as attached figure 1 As shown, the ABAQUS script interface can realize all the functions in ABAQUS / CAE. If the input is performed through a script file, the engineer's time can be greatly saved, and human error input can be avoided.
[0059] The specific implementation steps of ABAQUS pre-processing secondary development using Python language are as follows:
[0060] (1) EgdeCover: Considering the effect of equivalent pressure load in the tee joint connection pipeline under the action of pressure load, finite element simplification is performed on both ends of all pipelines in the system; the serial number of pipeline geometry Extract to make the geometric data points of the same plane generate a data plane.
[0061] (2) GetDatumInClamp: Establish the data reference point required by the finite element analysis at the center of the clamp part; extract the cir...
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The invention discloses a pre-processing module for development and automatic interaction analysis of aerial hydraulic pipelines. The pre-processing module is used for realizing the following steps of: automatically establishing a material database; automatically establishing an attribute database; automatically converting entity pipeline geometry into surface pipeline geometry; automatically carrying out geometric filing on the tips of the pipelines; automatically carrying out material attribute assignment distribution on the pipelines with different diameters; automatically capturing connection center point of hoops and the pipelines ; and automatically establishing connection relationship between the hoops and the pipelines. According to the pre-processing module disclosed by the invention, the influences, on the stress characteristics of the aerial hydraulic pipelines, of different combined working conditions are considered; an effect of avoiding repeated modeling is realized by means of a method for carrying out secondary development on the pre-processing module of finite element analysis under the premise of satisfying the aerial design conditions and material intensity requirements; and through changing input files under appointed path folders, automatic pre-processing and computation can be realized, and finite element calculation processes of calculation results ca be obtained. Through the pre-processing module, the time of the engineers can be greatly saved and the manual mis-input can be voided.
Description
technical field [0001] The invention relates to an IPC classification G06F electric digital data processing technology, in particular to an automatic interactive analysis pre-processing module for the development of aviation hydraulic pipelines. Background technique [0002] Aviation hydraulic pipelines are in a complex vibration environment, and resonance is prone to occur, which will lead to serious pipeline damage and affect flight safety. In the past, the pipeline design of the pump outlet energy system was based on experience and was random. The dynamic stress of the hydraulic pipeline can only be measured after the end of the system design. Change the design again, test and verify, resulting in a longer system development cycle. The hydraulic pipeline system is divided into three parts: oil suction pipeline, oil return pipeline and pressure oil pipeline. Each pipeline is composed of hoses, hard pipes, pipe joints, clamps and supports. Among them, the pressure oil pi...
Claims
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IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 马宁李凌管士飞夏晓屹王志强
Owner 伊顿上飞(上海)航空管路制造有限公司