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RISNumerical Investigation of Presliding in Viscoplastic Spherical Contacts
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Presliding contacts play an important role in stiffness, damping, and thus dynamic response of assembled structures. Load-dependent nonlinearities in presliding contacts still hinder predictive modeling. Classical models ...
Frictional Energy Dissipation in Wavy Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Accurate estimation and tuning of frictional damping are critical for proper design, safety, and reliability of assembled structures. In this study, we investigate how surface geometry and boundary conditions affect ...
Frictional Energy Dissipation in Spherical Contacts Under Presliding: Effect of Elastic Mismatch, Plasticity and Phase Difference in Loading
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Behavior of friction at material interfaces is inherently nonlinear causing variations and uncertainties in interfacial energy dissipation. A finite element model (FEM) of an elastic–plastic spherical contact subjected ...
Effect of Roughness on Frictional Energy Dissipation in Presliding Contacts
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A finite element model (FEM) is used to investigate the effect of roughness on the frictional energy dissipation for an elastic contact subjected to simultaneous normal and tangential oscillations. Frictional energy losses ...
Experimental Investigation of Energy Dissipation in Presliding Spherical Contacts Under Varying Normal and Tangential Loads
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Interfacial damping in assembled structures is difficult to predict and control since it depends on numerous system parameters such as elastic mismatch, roughness, contact geometry, and loading profiles. Most recently, ...
Tuning the Dissipation in Friction Dampers Excited by Depolarized Waves Across Patterned Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Recently, patterned surfaces (elastodynamic metasurfaces) were shown to cause mechanical wave depolarization resulting in conversion of uniaxial waves to multiaxial vibrations. Frictional oscillators loaded in multiple ...
In Situ Investigation of Load-Dependent Nonlinearities in Tangential Stiffness and Damping of Spherical Contacts
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Seemingly stationary (pre-sliding) interfaces between different materials, parts, and components are major sources of compliance and damping in structures. Classical pre-sliding contact models assume smooth elastic contact ...
Contact Nonlinearity in Indenter–Foam Dampers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, the nonlinear response of indenter–foam dampers is characterized. Those dampers consist of indenters pressed on open-cell foams swollen with wetting liquids. Recently, the authors identified the dominant ...
Indenter–Foam Dampers Inspired by Cartilage: Dynamic Mechanical Analyses and Design
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Articular cartilage is a thin layer of a solid matrix swollen by fluid, and it protects joints from damage via poroviscoelastic damping. Our previous experimental and simulation studies showed that cartilage-like ...