Method for determining weak links in mechanical system virtual design

Abstract

The invention discloses a method for determining weak links in mechanical system virtual design, which includes the following steps: (1) establishing a mechanical system virtual model machine; (2) building a mechanical system overall performance index evaluating system according to the mechanical system virtual module machine; (3) structuring a mechanical system design performance evaluating model based on the extension superiority theory; and (4) determining the weak links of the mechanical system design scheme. The method has the advantages that on the basis of the extension superiority evaluation method, quantification of quantitative indexes can be solved well by building correlation function, the problems of related many factors, nonlinearity and uncertainty of the mechanical system performance can be solved well, weakest indexes can be determined by structuring an index weakness model, and the integral performance of a mechanical system is improved conveniently. In addition, by the method, design efficiency and overall performance of the mechanical system are improved, waste of resources is reduced, and the cycle for research, development and experiment is shortened.

Description

technical field [0001] The invention relates to a method for determining weak links in virtual design of a mechanical system, which is suitable for quantitative evaluation and scientific optimization of schemes in the initial stage of mechanical system design. Background technique [0002] The quality of mechanical products depends to a large extent on the design of the product, because the design can endow the product with the vital essential characteristics of "inherent advantages and disadvantages". With the development of computer technology, the design of mechanical systems has changed the traditional cycle design and trial production method of "manual design-processing test-test demonstration", getting rid of the time-consuming and money-consuming problems caused by repeated tests of physical prototypes. low level situation. The practice of the development of mechanical technology has proved that the traditional design and analysis methods are far from meeting the nee...

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Problems solved by technology

The practice of the development of mechanical technology has proved that the traditional design and analysis methods are far from meeting the needs of the development of modern mechanical engineering technology

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