Modal analysis method of static pressure main spindle at micro scale
A technology of hydrostatic spindle and modal analysis, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as different influences, air thinning effects, errors, etc
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[0022] The method of the present invention is realized by a software program, including MATLAB and ANSYS software.
[0023] The flowchart of the method of the present invention is as figure 1 As shown, it specifically includes the following steps:
[0024] Step 1. According to the working condition of the static pressure spindle, the flow factor Q is used to simulate the rarefaction effect of the gas inside the bearing.
[0025] Step 2: Establishing the distribution model of the air film pressure of the hydrostatic bearing considering the rarefaction effect, taking the flow factor into account, and establishing the Reynolds equation at the microscale.
[0026] In step 3, the equation obtained in the previous step is dimensionless to facilitate further calculation and solution.
[0027] Step 4, write a program with MATLAB language, solve the dimensionless equation, and obtain the bearing air film pressure distribution.
[0028] Step 5, calculate the bearing stiffness and dam...
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