Decision-making methods with three-parameter interval grey number

Fuzzy comprehensive evaluation method of disaster loss assessment based on interval numbers of three parameters;

This paper studied interval numbers of three parameters by using system knowledge.

The weights is described with interval numbers of three parameters according to the problem that it is difficult to describe the weights using fixed value in comprehensive evaluation,and the method of connection number of multi-difference degree is also presented.

Based on the general dynamic programming,in the grey dynamic programming model combined with the grey theory,the runoff is described by the interval grey numbers.

Based on grey idea and game theory,this paper analyzes uncertain factors on conflicted vehicles at the entrances of expressways,presents that the conflicted vehicles when choosing strategies are restrained by interval grey numbers,and establishes zero and grey game model for conflicted vehicles.

A kind of order relations of interval grey number via kenning degree;

Aiming at the defects of the traditional fuzzy synthetic judging method,the method for carrying out evaluation on the scheme of mechanical design by the use of Vague set and interval grey number was presented.

The conceptions of the superiority,inferiority and equipollence position degrees of the interval grey number were defined,and it was proved that the sum of three position degrees for a certain interval grey number related to another grey number is 1,and that the relation set of the position degrees is a whole order set of the in.

Using the interval analysis, the vibration control problem of structures with interval parameters is discussed, which is approximated by a deterministic one.

The topology optimization of planar continuum structures with interval parameters subjected to non-probabilistic constraints on fundamental eigenfrequency and the forbidden zone between two eigenfrequencies are studied.

Study on viscoelastic problem based on the interval parameter perturbation method;

By using interval factor method,the structural physical interval parameters and geometric dimensions can be expressed as the product of two parts corresponding to the intervals and the deterministic value.

By combining the interval finite element(FEM) analysis with perturbation method and optimization technique, the interval parameter perturbation method and interval parameter optimization method were presented to solve the equations of interval FEM.