Institute of Fundamental Technological Research
Polish Academy of Sciences

Staff

Shouyao Liu

Department of Mechanics of Materials (ZMM)
Materials Modeling Group (ZeMM)
telephone: (+48) 22 826 12 81 ext.: 453
room: 140
e-mail:

Recent publications
1.  Liu S., Wu J., He S., Yuan X., Stupkiewicz S., Wang Y., Effect of substrate stiffness on interfacial Schallamach wave of flexible film/substrate bilayer structure: Cohesive contact insight, TRIBOLOGY INTERNATIONAL, ISSN: 0301-679X, DOI: 10.1016/j.triboint.2024.110358, Vol.202, pp.110358-1-14, 2025

Abstract:
As the critical feature of the stick-slip for soft materials, the interfacial Schallamach waves of flexible composite structures are essential for smart tactile sensors to realize sliding perception. Herein, the Schallamach waves of polydimethylsiloxane film/substrate bilayer structures with three substrate stiffnesses regulated by porosities are investigated by setting up in-situ sliding tests and establishing finite element models with mixed-mode cohesive contact. Inhomogeneity in microcontact stiffness disrupts the continuity and synchronization of the Schallamach waves, resulting in non-periodic fluctuations in the contact force. The buckling phenomenon of the film structure marks the transition from stick to slip. This buckling induces a shift at the crack front from normal compressive stress to tensile stress, leading to mixed-mode damage.

Keywords:
Stick-slip,Polydimethylsiloxane film/substrate bilayer structures,Schallamach wave,In-situ sliding test,Mixed-mode cohesive contact model

Affiliations:
Liu S. - IPPT PAN
Wu J. - other affiliation
He S. - other affiliation
Yuan X. - Imperial College London (GB)
Stupkiewicz S. - IPPT PAN
Wang Y. - Beijing Aeronautical Manufacturing Technology Research Institute (CN)

Category A Plus

IPPT PAN

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