Mechanical material evaluation method and system

An evaluation method and evaluation index system technology, applied in the field of mechanical material evaluation methods and their systems, can solve problems such as strong subjectivity, and achieve the effect of solving subjective problems and making the evaluation process more reasonable and effective.

Active Publication Date: 2017-09-29
中氢(湖南)轨道交通有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a mechanical material evaluation method and its system to solve the ex

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  • Mechanical material evaluation method and system
  • Mechanical material evaluation method and system
  • Mechanical material evaluation method and system

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Embodiment Construction

[0052] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0053] Embodiments of the present invention first disclose a method for evaluating mechanical materials, see figure 1 , including the following steps:

[0054] S1: Select the mechanical material evaluation index and determine the weight of each evaluation index.

[0055] The selection of mechanical materials is an extremely critical part of mechanical design. Generally, the mechanical properties, economical efficiency, process performance and environmental properties of materials need to be considered, and the mechanical properties, economical efficiency, process performance and environmental properties can be evaluated by multiple evaluation indicators. Make an evaluation. This implementation column selects several evaluation indicators from each...

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Abstract

The invention discloses a mechanical material evaluation method and system. The mechanical material evaluation method and system aim at solving existing technical problems that a traditional scheme is high in subjectivity, and a single decision-making method has limitation. The method includes the following steps that a mechanical material evaluation index system is established, and index weights are determined; the corresponding relationship between evaluation scale language variables and fuzzy measures is determined, material schemes are subjected to expert scoring through the triangular fuzzy number, a fuzzy decision-making matrix is established, the fuzzy decision-making matrix is standardized and weighted, and a weighted standardized judgment matrix is obtained; an ideal solution and a negative ideal solution are determined according to the weighted standardized judgment matrix; the Euclidean distances between the schemes and the ideal solution and between the schemes and the negative ideal solution and grey correlation coefficients are calculated, and the relative close degree and grey correlation similarity of the schemes are calculated according to the result; comprehensive evaluation indexes of the schemes are calculated through a non-linear model according to the relative close degree and the grey correlation similarity in order to carry out priority selection and sorting on the schemes.

Description

technical field [0001] The invention relates to the field of data evaluation, in particular to a mechanical material evaluation method and system thereof. Background technique [0002] The machinery industry plays an important supporting role in the development of my country's national economy and occupies a very important position in economic development. As the foundation of the machinery industry, mechanical design plays a key role in the development of the entire machinery industry. The selection of mechanical materials is an extremely critical step in mechanical design, which needs to consider the mechanical properties, process performance, economy and environmental properties of materials. The selection of mechanical materials is a multi-criteria, multi-objective, and multi-scheme decision-making problem, which needs to take into account the ambiguity of decision-makers. Multi-attribute decision-making is a kind of decision-making problem that widely exists in the fi...

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 彭勇张洪浩许平高广军姚曙光谢鹏鹏
Owner 中氢(湖南)轨道交通有限公司
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