机电产品脆弱性评价研究

发布时间：2018-05-01 16:20

本文选题：机电产品 + 脆弱性　；参考：《沈阳航空航天大学》2016年硕士论文

【摘要】：随着科技水平不断提高,机电产品得到了迅速发展,产品功能越来越强大,其已经成为人们生活和生产中不可缺少的一部分。与此同时产品的价值也普遍提高,如果产品在设计阶段对外部威胁考虑不充分,以及对外部威胁作用时自身的损伤机理和损伤形式考虑不够,即使产品在正常情况下使用,当其遭受到不大的外部威胁作用时,也可能造成产品超出预期的损伤程度和损失后果。因此,本文提出了机电产品脆弱性概念,针对产品损伤程度对外部威胁的敏感程度进行研究,从而建立了一套机电产品脆弱性评价方法,为产品脆弱性设计提供依据。本文以各领域脆弱性相关研究为理论基础,根据研究目的并结合机电产品自身特征,对机电产品脆弱性进行定义,并进行相关理论探讨。提出机电产品脆弱性评价理论。首先,对产品的结构及功能进行分析,辨识产品可能面临的外部威胁,以及对各类型外部威胁可能对产品造成的损伤机理和损伤形式进行分析。其次,运用DMEA方法确定不同类型威胁下的脆弱性关键部件,以关键部件表示产品整体。然后,采集并处理产品遭受不同强度威胁作用时所造成的损伤程度的数据,根据处理后的数据描绘出损伤程度随威胁大小变化的曲线,并对曲线进行拟合,确定曲线的函数表达式。再次,利用函数表达式确定关键点,并进行一定处理,最终确定产品对各类威胁作用的脆弱性计算公式,进而求取脆弱性值。最后,本文以某型号汽车为实例,对评价方法有效性进行验证。
[Abstract]:With the development of science and technology, the mechanical and electrical products have been developed rapidly, and the functions of the products have become more and more powerful, which has become an indispensable part of people's life and production. At the same time, the value of the product is generally increased, if the product does not fully consider the external threat at the design stage, as well as the damage mechanism and damage form of the product when it acts on the external threat, even if the product is used under normal circumstances, When it is subjected to a small external threat, it may also cause more damage than expected and loss consequences. Therefore, this paper puts forward the concept of vulnerability of mechanical and electrical products, studies the sensitivity of the degree of product damage to external threats, and establishes a set of vulnerability assessment method for mechanical and electrical products, which provides the basis for the design of product vulnerability. Based on the related research of vulnerability in various fields, this paper defines the vulnerability of mechanical and electrical products according to the purpose of the research and the characteristics of mechanical and electrical products, and makes a theoretical discussion on the vulnerability of mechanical and electrical products. The theory of vulnerability assessment of mechanical and electrical products is put forward. Firstly, the structure and function of the product are analyzed to identify the external threats that the products may face, and the mechanism and forms of damage caused by various types of external threats are analyzed. Secondly, the DMEA method is used to determine the vulnerability critical components under different types of threats, and the key components are used to represent the product as a whole. Then, the data of damage degree caused by different intensity threat are collected and processed. According to the processed data, the curve of damage degree varying with threat magnitude is drawn, and the curve is fitted. Determine the functional expression of a curve. Thirdly, the key points are determined by the function expression and processed to a certain extent. Finally, the formula for calculating the vulnerability of the product to all kinds of threats is determined, and the value of the vulnerability is obtained. Finally, the effectiveness of the evaluation method is verified by taking a certain type of vehicle as an example.
【学位授予单位】：沈阳航空航天大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TH114

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