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Dynamic accident deduction simulation-based failure mode and influence analysis method

A technology for failure mode and impact analysis, applied in design optimization/simulation, special data processing applications, instruments, etc., to solve problems such as analyzing combined functions, inability to perform temporal logic, and failures

Active Publication Date: 2018-06-15
CHINA AERO POLYTECH ESTAB
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem that the traditional failure mode and effect analysis method cannot perform temporal logic analysis and combined function failure analysis

Method used

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  • Dynamic accident deduction simulation-based failure mode and influence analysis method
  • Dynamic accident deduction simulation-based failure mode and influence analysis method
  • Dynamic accident deduction simulation-based failure mode and influence analysis method

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Embodiment Construction

[0082] The technical solution of the present invention will be further described in detail and in-depth with reference to the drawings and embodiments below. Taking the aircraft elevator system as an example, the failure mode and impact analysis based on accident dynamic deduction simulation is carried out. The steps are as follows:

[0083] Step 1. According to the product agreement, product requirements and design documents of the analyzed object, describe the composition and function of the analyzed object. The analysis object is decomposed layer by layer, and decomposed to the lowest agreed level according to the needs of failure mode and effect analysis;

[0084]The composition and function of the system are described as follows: the elevator system is a single-beam box-type thin-walled structure, and a double-closed chamber section structure composed of beams, small beams, ribs, and skins. In order to ensure that the operation of the elevator system is required by the l...

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Abstract

The invention discloses a dynamic accident deduction simulation-based failure mode and influence analysis method. According to the method, in allusion to characteristics of analyzed objects, a function box of each module at the lowest agreed layer is constructed to construct a function box map; being different from the traditional operation of adding failure rates and carrying out reliability analysis on function modules, the method is characterized by constructing a dynamic accident deduction simulation model which comprises elements such as state, event and the like for internal behaviors ofeach function box, connecting all the function boxes into a whole through constructing logic and time relationships between the function boxes, and finally simulating dynamic operation processes of systems through a dynamic discrete event simulation method so as to find out failure events and generation probabilities of the systems and then carry out further failure influence and hazard analysis.The method disclosed by the invention is capable of solving the problem that the traditional failure mode and influence analysis method cannot carry out temporal logic analysis and combined functionfailure analysis.

Description

technical field [0001] The invention relates to a failure mode and impact analysis method based on accident dynamic deduction and simulation, and belongs to the technical field of reliability analysis of complex systems. Background technique [0002] Failure Mode and Effects Analysis (Failure Mode and Effects Analysis) is an analysis technology based on failure mode and aimed at failure effects or consequences, which is summarized in engineering practice. It comprehensively identifies weak links and key items in the design by analyzing the impact of different failures of each component on the system work one by one, and provides basic information for evaluating and improving the reliability of the system design. [0003] The method of failure mode and effects analysis is widely used in the field of reliability analysis of complex systems. Traditional failure mode and effect analysis takes a single independent function as the starting point. During the analysis, more conside...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 周汉清吕海熊王智浩黄燕冰江志炜李瑜
Owner CHINA AERO POLYTECH ESTAB
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