An arc rough surface modeling method with multi-scale parameter coupling

A technique of rough surface, modeling methods, applied in electrical digital data processing, special data processing applications, instruments, etc.

Inactive Publication Date: 2018-12-14
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology

[0006] The purpose of the present invention is to focus on solving the modeling problem of the coupling of the macroscopic structural parameters and t

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  • An arc rough surface modeling method with multi-scale parameter coupling
  • An arc rough surface modeling method with multi-scale parameter coupling
  • An arc rough surface modeling method with multi-scale parameter coupling

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Embodiment Construction

[0036] Specific embodiments of the present invention will be described in detail below. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0037] see Figure 1 to Figure 10 . A multi-scale coupled arc surface rough surface modeling method, which specifically includes the following steps:

[0038] (1) see figure 2 , establish a space rectangular coordinate system O-XYZ, and take the XOY plane as the polar coordinate plane, and the O-Z axis as the rotation center axis, and establish a cylindrical coordinate system. The cylindrical coordinates of any point P in the arc surface are P(r, θ, z), r is the polar radius projected from point P to polar coordinates in the XOY plane, that is, the radius of the arc surface, θ is the polar angle projected from point P to polar coordinates in the XOY plane, and z is the projection of point P on the O-Z a...

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Abstract

The invention provides an arc rough surface modeling method with multi-scale parameter coupling. By defining the associated three-dimensional rectangular coordinate system and cylindrical coordinate system, an ideal smooth circular arc surface is generated and meshed, and the surface is flattened and projected into a plane. Based on the smooth continuity and periodicity of double sinusoidal waveform surfaces, a large-scale grid is used to control the normal height of the macroscopic matrix and the amplitude of the double sinusoidal waveform surface, and small-scale grids control the smooth continuity of two sinusoidal surfaces. Through coordinate transformation and point cloud technology, the parameters of ideal smooth circular arc surface, the normal height of the macroscopic matrix and the amplitude of the double sinusoidal wavefront are coupled with each other, and the multi-scale coupled circular arc rough surface is generated by parametric programming in the finite element software. On this basis, the elastic-plastic contact characteristics of the circular arc rough surface and related engineering problems can be further analyzed, and the multi-scale coupling modeling problembetween the macro-structure parameters of the circular arc surface and the micro-surface topography parameters of the contact surface can be solved emphatically.

Description

technical field [0001] The invention relates to a modeling method of a contact joint surface, in particular to a modeling method of a circular arc rough surface coupled with multi-scale parameters, which can be used for research on rough surface contact problems. Background technique [0002] Real contact surfaces are rough at the microscopic scale, and the interaction of surfaces during contact is crucial to the contact and tribological properties of typical mechanical parts such as gears, bearings, clutches, and wheel rails. Contact characteristics such as contact stress, contact area, and normal deformation play a key role in the friction, wear, lubrication, sealing, and heat conduction of mechanical equipment and parts. The contact problem of arc rough surface exists widely in engineering, and the establishment of its accurate analysis model is of great significance for further research on the contact characteristics of arc rough surface. [0003] The contact problem is...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 刘楷安李秋菊刘默
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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