Material form change functional decomposition method based on flow semantic

Abstract

The invention discloses a material form change functional decomposition method based on flow semantic. The method includes the steps that 1, a meta model and a material form type model library are established; 2, level form graphs are adopted to represent the input form and the output form of materials based on the meta model and a material form type model library; 3, level form graphs of the input form and the output form are compared, and local changes corresponding to the overall form changes of the materials are obtained; 4, the local changes are subjected to priority ranking; 5, local change operations are executed in sequence according to the priority, and the input form is converted into the output form. In the initial stage of concept design, functional semantic including material flow information is subjected to modeling representation, and functional decomposition is conducted through an established model, and the change process of the materials is deduced.

Description

technical field [0001] The invention relates to the field of computer-aided design, in particular to a method for decomposing functions of material form changes based on flow semantics. Background technique [0002] Conceptual design is an important stage of system design. About 70% of the total product cost is formed at this stage, and functional decomposition is the core link to obtain the functionality and innovation of products in conceptual design, which exists in industrial production and daily life. The core function of a large number of mechanical systems is to change the shape and structure of some specific materials. [0003] In the traditional conceptual design function process, the semantic representation of flow is very limited, and most of them only support the description of the type of input and output forms and a small number of attributes, especially the shape and structure attributes that cannot describe the material flow. Due to the lack of flow semantic...

AI Technical Summary

Problems solved by technology

In traditional conceptual design, there is a lack of standardized functional modeling methods, only natural language or simple block diagram representation, which is not convenient for knowledge sharing and reuse by designers from different fields

At the same time, the search process of function decomposition and principle understanding is often completed manually by the experience and knowledge of designers, and there is a lack of standardized and automated function decomposition methods

[0005] Existing functional representation methods have problems such as irregular modeling and lack of semantics, especially due to the lack of numerical information on the morphological and structural attributes of material flow at the initial stage of conceptual design, which has led to long-term ignorance of the detailed attributes of material flow

Existing representation methods cannot meet the needs of system function analysis, and existing technologies do not have the ability to automatically decompose functions

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