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Surface Manufacturing Signatures (SMS²): A frequency-domain-based modeling concept for generating process-specific Skin Model Shapes (SMS)
Bauer, Martin; Goetz, Stefan; Wartzack, Sandro
Type:
Year:
2026
Editor:
Paetzold-Byhain, K.; Krause, D.; Wartzack, S. and Koch, A.
Author:
Series:
DfX
Institution:
Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
Page(s):
248-257
DOI number:
Abstract:
Realistic surface topographies are essential for meaningful simulations given inevitable manufacturing-induced variations. Yet most synthetic surface models rely on generic statistical descriptions that ignore the specific manufacturing process. This work introduces a frequency-domain approach for generating process-specific surfaces, combining the measured amplitude spectrum with a synthesized, coherence-based phase spectrum. This enables semi-random reconstruction of non-self-affine, anisotropic surface structures. Compared to conventional Gaussian random-field models, the approach shows superior reconstruction of peak height and RMS-gradient with up to 40 % lower deviation, indicating its suitability for contact mechanics, tribological analysis, and assembly simulation.
Keywords:
