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A method for constructing a spatial fault field model based on a 3D product model

A construction method, a technology of three-dimensional models, applied in the field of reliability engineering

Active Publication Date: 2021-06-08
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the current flap design simply considers the problems of economy and accessibility, there is no good method to accurately guide the design of the maintenance flap

Method used

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  • A method for constructing a spatial fault field model based on a 3D product model
  • A method for constructing a spatial fault field model based on a 3D product model
  • A method for constructing a spatial fault field model based on a 3D product model

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Embodiment Construction

[0045] The method process of the present invention is as figure 1 shown. In order to better understand the features and advantages of the present invention, detailed descriptions will be given below in conjunction with the accompanying drawings and cases. The selected case of the present invention is a product P comprising 3 constituent units. The specific implementation steps are:

[0046] Step 1: Calculate the risk index of each unit and each failure mode of the product.

[0047] According to the results of product failure mode impact and hazard analysis (FMECA), calculate the risk index of each component unit and each failure mode of the product, which is determined by the failure mode probability level, severity level, and detection difficulty level.

[0048] The product FMECA results can be expressed in Table 1, from which the occurrence probability level, severity level, and detection difficulty level of each unit and each failure mode can be obtained, and then the ri...

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Abstract

The invention relates to a method for constructing a spatial fault field model based on a product three-dimensional model. This method is based on the concept of field, visualizes the distribution of failure modes of product components, and radiates to the surface of the product to form a failure field, thereby providing a basis for product maintainability design. It includes three major steps: (1) Calculate the risk index of each unit and each failure mode of the product, that is, determine the risk index of each component unit and each failure mode according to the failure mode impact and hazard analysis results; (2) calculate The spatial fault field strength of the product component unit is calculated by combining the failure mode risk index and the maintenance difficulty of the unit; (3) Calculate the surface fault field strength of the product, that is, convert the irregular unit into a regular three-dimensional wireframe, and then convert the unit space fault field The strong projection onto the product surface forms a fault field distribution model. Based on this model, the design of the product maintenance cover can be guided.

Description

[0001] Technical field [0002] The invention provides a method for constructing a spatial fault field model based on a product three-dimensional model, which realizes the visual expression of product fault information on the product surface, thereby providing guidance for the design of a product maintenance hatch. The invention belongs to the technical field of reliability engineering. Background technique [0003] The design of the maintenance cover is one of the important aspects in the design. In order to ensure the timely maintenance and repair of the product during use, a cover needs to be opened on the surface of the product. The quality of the cover design is directly related to the maintainability level of the product. Although the current flap design simply considers the problems of economy and accessibility, there is no good method to accurately guide the design of the maintenance flap. In view of this, the present invention introduces the concept of "field" and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06T17/00G06Q10/06G06Q30/06G06F119/02
CPCG06Q10/0635G06Q30/0621G06T17/00
Inventor 杨德真任羿王自力冯强孙博
Owner BEIHANG UNIV