Abstract
To analyze the quality of three-dimensional (3D) model for aircraft structural parts designed by model-based definition (MBD) technology, an approach combining analytic hierarchy process (AHP), hesitant fuzzy linguistic term set (HFLTS), and fuzzy synthetic evaluation is proposed. According to all levels of quality standards and part specification-tree elements, a quality assessment index system is constructed from four sub-models of parts 3D model: design model, process model, tooling model, and test model. In addition, the weight of each index is calculated using the AHP. Then the assessment model is established by using a configurable index system model, HFLTS, fuzzy synthetic evaluation, and assigning uniformly and quantitatively the index system through quality grade division rules of indexes and triangular fuzzy numbers. Finally, a case application is used to illustrate the proposed method. The application of this method can make the quality analysis of parts 3D model more effective, accurate, and efficient. This paper can not only help enterprises identify higher-weight and error-prone design factors, but also guide designers in modeling.
Highlights
With the application of model-based definition (MBD) technology in aviation manufacturing enterprises, three-dimensional (3D) model is usually the only data source in the design and manufacturing process.[1]
Aircraft structural parts are the main components of aircraft frame and aerodynamic shape, and it is necessary to analyze the quality of 3D model for aircraft structural parts
As the parts 3D model information cannot be directly used for assessment, it is converted by quality grade division rules of indexes and National standard Enterprise standard Artificial experience
Summary
With the application of model-based definition (MBD) technology in aviation manufacturing enterprises, three-dimensional (3D) model is usually the only data source in the design and manufacturing process.[1]. AHP and fuzzy synthetic evaluation are often used together.[36,37] the assessment indexes of 3D model will change for different aircraft structural parts. We analyzed the design factors that affect the quality of 3D model for aircraft structural parts according to all levels of quality standards and part specification-tree elements, and developed a series of evaluation indexes.
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