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Structure reliability evaluation method based on fault mechanism and multi-level information fusion

A technology of failure mechanism and reliability, applied in complex mathematical operations and other directions, can solve problems such as high cost and insufficient evaluation accuracy

Active Publication Date: 2020-03-27
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of insufficient evaluation accuracy and high cost of the above-mentioned reliability evaluation method in the prior art, and provide a method with high evaluation accuracy and Low-cost structural reliability assessment method based on failure mechanism and multi-level information fusion

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  • Structure reliability evaluation method based on fault mechanism and multi-level information fusion
  • Structure reliability evaluation method based on fault mechanism and multi-level information fusion
  • Structure reliability evaluation method based on fault mechanism and multi-level information fusion

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Embodiment Construction

[0039] 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 embodiments 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 same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0040] In related technologies, there are still many difficulties in the structural reliability test verification. The difficulty lies in: (1) The technology density of the aircraft structure system is getting higher and higher, and it is difficult to select the reliability characteristic quantity; (2) The replacement of the aircraft is getting faster and faster, and the reliability information and data used for reference are ...

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Abstract

The invention relates to the technical field of reliability evaluation, and provides a structure reliability evaluation method based on a fault mechanism and multi-level information fusion. The methodcomprises the following steps: positioning a key failure part of a structure system, and performing hierarchical segmentation on the key failure part to obtain a component-level unit and a component-level unit forming the component-level unit; performing multiple reliability verification experiments on each element-level unit to obtain first experimental data; performing multiple reliability verification tests on each component-level unit to obtain second experimental data; obtaining a reliability function of the component-level unit according to the composition structure of the component-level unit, the first experimental data and the second experimental data; and performing a preset number of structural reliability verification tests on the structural system to obtain third experimentaldata, and obtaining the final reliability of the structural system according to the composition structure of the structural system, the third experimental data and the component-level reliability function. The cost is reduced while relatively high precision is ensured.

Description

technical field [0001] The invention relates to the technical field of reliability evaluation, in particular to a structural reliability evaluation method based on fault mechanism and multi-level information fusion. Background technique [0002] The reliability of structural mechanism is crucial to ensure the safety of structural mechanism products, especially for aircraft structural systems that serve in harsh environments. The failure of one original component may lead to the collapse of the whole system; a small deviation can also lead to disastrous consequences. Therefore, the reliability assessment of structural systems becomes particularly important. [0003] However, the reliability assessment methods for structural systems in the prior art have problems such as insufficient assessment accuracy and high cost. [0004] Therefore, it is necessary to design a new structural reliability assessment method based on failure mechanism and multi-level information fusion. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/18
CPCG06F17/18
Inventor 李磊岳珠峰谭春龙李宏林杨芳苑天宇高行山
Owner NORTHWESTERN POLYTECHNICAL UNIV
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