Turbine shaft structure reliability analysis method, analysis device and readable storage medium
An analysis method and turbine shaft technology, applied in instrumentation, geometric CAD, electrical and digital data processing, etc., can solve the problems of difficulty in giving prediction errors, and difficulty in ensuring the accuracy of reliability estimates, so as to improve accuracy and improve prediction accuracy. Effect
Active Publication Date: 2022-04-12
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
The traditional PCE model method for estimating the reliability of the turbine shaft structure in the prior art is difficult to give the prediction error of the required reliability, and it is difficult to guarantee the accuracy of the reliability estimate
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[0046] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details being omitted, or other methods, components, devices, steps, etc. may be adopted. In other instances, well-known technical solution...
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The disclosure provides a reliability analysis method, an analysis device and a computer-readable storage medium of a turbine shaft structure, and relates to the technical field of reliability analysis. The analysis method involves randomly selecting N 0 The sample points are used as the initial training sample set to construct the initial PCE model; the sample points with the minimum value of the U function in the important sampling sample pool are added to the initial training sample set to form the target training sample set, and the target training sample set is input into the response In the function, the target response set is generated; according to the target training sample set and the target response set, the parameters of the initial PCE model are repeatedly updated to generate the target PCE model until the value of the U function corresponding to each sample point in the important sampling sample pool is greater than or Equal to the preset value; calculate the failure probability of the turbine shaft structure according to the target PCE model. The analysis method, analysis device and computer-readable storage medium of the present disclosure can improve the accuracy of structural failure probability prediction.
Description
technical field [0001] The present disclosure relates to the technical field of reliability analysis, in particular, to a reliability analysis method, an analysis device and a computer-readable storage medium of a turbine shaft structure. Background technique [0002] The reliability of an aircraft engine is an important symbol of its quality. The turboshaft is an important part of the aircraft engine, and the reliability of the turboshaft has a great influence on the overall reliability of the aircraft engine. Therefore, it is necessary to analyze the reliability of the turboshaft structure. In the prior art, the traditional PCE model method for estimating the reliability of the turbine shaft structure is difficult to give the prediction error of the required reliability, and it is difficult to guarantee the accuracy of the reliability estimate. [0003] It should be noted that the information disclosed in the above background section is only for enhancing the understandin...
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IPC IPC(8): G06F30/17G06F30/15G06F119/02
CPCG06F30/17G06F30/15G06F2119/02
Inventor 冯凯旋吕震宙何良莉凌春燕
Owner NORTHWESTERN POLYTECHNICAL UNIV