Calculation method of fluid-solid coupling performance of hydrostatic chute based on MATLAB-ANSYS software

Abstract

The invention discloses a method based on MATLAB-ANSYS software static chute fluid-solid coupling performance calculation method, including: (1) according to the actual working conditions, the staticchute three-dimensional model is established, the force acting on the hydrostatic oil cushion on the hydrostatic chute is determined. (2) in MATLAB, the pressure distribution of hydrostatic oil cushion and the thickness of base oil film are obtained by a single quantitative rectangular hydrostatic oil cushion model; (3) according to the finite element method, the hydrostatic chute is meshed in ANSYS, and the specific position of oil cushion is determined by special node. (4) loading the calculated pressure distribution onto the divided model to obtain the deformation of hydrostatic chute structure; (5) calculating the new pressure distribution and the base oil film thickness by substituting the obtained deformation as the oil film thickness variation for the oil film thickness; (6) formingcoupling computational model by cyclic iteration. When the numerical variation of the base oil film thickness is less than the calculation accuracy, the model can be considered as a stable solution,and the coupling calculation is finished.

Description

technical field [0001] The invention is a calculation method for the fluid-solid coupling work performance of a static pressure slide plate based on MATLAB-ANSYS software, and belongs to the field of mechanical design and manufacture. Background technique [0002] The static pressure slide plate is a key part of the precision ultra-precision heavy-duty high-end CNC machine tool. It supports the ram of the heavy-duty machine tool and drives the ram to move linearly along the beam. Due to the advantages of low friction, high load capacity and high motion precision, static pressure bearings have been widely used in various heavy machinery parts manufacturing industries. The research on static pressure technology in foreign countries is earlier, the products have covered all parts, and mature manufacturing technologies and products have been developed. Although the domestic research is a bit late, under the trend of reform and opening up, we have vigorously introduced foreign t...

AI Technical Summary

Problems solved by technology

However, due to the fact that the static pressure slide is not only subjected to the gravity of the slide, ram and various parts during the movement, but also the cutting force when the parts are processed, the slide itself will also be deformed

In the previous design calculations, the sliding plate was simplified as a rigid body, and the influence of the mutual coupling between the deformation of the sliding plate itself and the change of the oil film thickness on the working performance of the sliding plate was ignored.

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