Computational dynamics of discrete systcms(or computational methods of system dynamics) has developed rapidly out of China in recent 10 years. The current development of this field is reviewed in this paper, A detailed introduction to its research, scopes and tasks is also given.
This paper uses Kane′s equations developed in recent years as the means of study and delivers a set of dynamics equations of planar mechanism with arbitrary structure and a series of computational methods.
The large deflection analysis for flexspline of harmonic drive is taken by using the program written,from which computation results can coincide well with the data determined by test, Therefore,the scientific computational methods and valuable data are derived for engineering design.
Measurement and Calculation Methods of a Stem Image Information
A three-stage axial turbine was redesigned by jointly applying S2 flow surface direct problem calculation methods and multistage local optimization methods.
The experimental data presented permit a deeper understanding of the mechanism of flow of a two-phase medium in a nozzle and are required for an evaluation of efficiency of the calculation methods.
The results of different calculation methods are compared.
By means of numerical calculations the models for the conditional moment and traditional calculation methods are compared, as are the various approaches to the computation of the coefficients of the equations for the conditional means.
Especially, in a case with no failure and a case with only one failure, the concrete computational methods are presented.
Computational methods are usually based on solving a series of improvement problems.
Consideration was given to the computational methods adapted to the problems arising in these models.
In contrast to standard computational methods, down-stream does not involve an increase in the number of nodes in the computational mesh in the radial direction because special variables are introduced into the equations.
However, computational methods for determining the parameters and influence of two-phase flows on constructional elements of machines, etc., are as yet inadequately developed.