A Comparative Study on Asperity Peak Modeling Methods

Chinese Journal of Mechanical Engineering

Table 1 Comparison of [ξ] for σ=1, ϑ = − 2.3

Correlation length	Method	ξ_avg	Percent variation	σ_ξ	Percent variation
0	Three-point definition	0.8445	0	1.0005	0
0	Spectral moment approach	1.8411	118.01%↑	0.6352	− 36.51%↓
50	Three-point definition	0.2366	0	0.9980	0
50	Spectral moment approach	0.4619	95.22%↑	0.9833	− 1.47%↓
100	Three-point definition	0.1890	0	1.0035	0
100	Spectral moment approach	0.2274	20.32%↑	0.9909	− 1.26%↓