The Simulation Research Of The Assembly And The Bearing Process Of Hydraulic Dynamometry Rotor

In the field of science and technology for many mechanics problems and physical problems,people have got their should follow the basic equations and the corresponding definite condition.But can use the analytic method to find the exact solution of nature is a minority equation is simpler,and rules of geometry rather issue.For most problems,due to the nonlinear nature of some of the characteristics of equation,or due to the geometric shape of solving area is complicated,is not the analytical solution.This kind of problem is usually in two different ways.One is the introduction of simplified assumptions,simplifying the equations and geometric boundary to can place,reason,and problem in simplified condition of solutions is obtained.But this approach only in limited circumstances is feasible,because toomuch simplified may cause error is very big and even wrong answers.So people for many years to find and developed another solution way and the method of numerical solution.Especially the past 30 years,with the rapid development of computer and wide application of numerical analysis method has become the main tool to solve the problem of science and technology.And the emergence of finite element method,numerical analysis method is significant.Is the basic idea of finite element method to solve continuous area by a group of a finite number of discrete,and in a certain way,the combination of units connected together.Due to the unit will be effected according to the different way of connection are combined,and the unit itself and can have different shapes,so it can reduced geometry model complex solution domain.Finite element method as a numerical analysis method is another important feature is the use of hypothesis in the each unit approximate function to shard to express the whole solution domain and on the unknown field functions.A approximation functions in the unit is usually by the unknown field functions or its derivative in the unit,the value of each node and the interpolation function.A approximation functions in the unit is usually by the unknown field functions or its derivative in the unit,the value of each node and the interpolation function to express.As a result,the finite element analysis of a problem,the unknown field functions or its derivative value on each node becomes new unknown quantity(and the degree of freedom),so that a continuous infinite degrees of freedom into a limited degree of freedom discrete problems.Once solving these unknown variables,the diamond can be calculated by interpolation function of each unit function approximation,the whole solution domain is obtained on the approximate solution...