Rough sphere
收藏DataCite Commons2023-11-28 更新2024-07-13 收录
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https://contact.engineering/go/8ppx5
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资源简介：
Example illustrating the contact of a rough sphere that behaves as a nominally flat rough surface at small normal forces while it follows the Hertzian theory of smooth spheres at large normal forces.
This dataset is similar to the simulations in https://doi.org/10.1063/1.4950802
The topographies were generated with the following Python code:
```
from SurfaceTopography.Generation import fourier_synthesis
from SurfaceTopography.Special import make_sphere
import numpy as np
a0 = 1 # Pixel size
radius = 10000
n = 1024
hprms = 0.01
np.random.seed(0)
roughness = fourier_synthesis(
(n, n),
physical_sizes=(n, n),
rms_slope=hprms,
hurst=0.8,
short_cutoff=4,
long_cutoff=256
)
sphere = make_sphere(radius, (n, n), (n, n), centre=(n // 2 + 1, n // 2 + 1 ), kind="paraboloid")
roughness.to_matrix(f"rough_flat.txt")
sphere.to_matrix(f"smooth_sphere.txt")
roughness._heights += sphere.heights()
roughness.to_matrix(f"rough_sphere.txt")
```
提供机构：
contact.engineering
创建时间：
2022-03-25
