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Investigation of Normal Dynamic Contact Stiffness and Damping Characteristics in Mixed Lubrication for Non-Gaussian Rough Surfaces
AbstractThis study aims to investigate the contact performance of non-Gaussian rough surfaces under mixed lubrication conditions, with a particular...
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The Modeling for the Normal Contact Stiffness and Damping of Anisotropic Interface
Abstract—When two anisotropic rough surfaces contact, the interface is shown as the contact anisotropy or contact isotropy, which closely relates to...
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Rotor-to-Stator Friction Simulation with Nonconstant Stiffness of the Contact Surfaces and Small Clearance between Them
AbstractAnalytical and numerical modeling approaches for the contact-working system of turbo- and electric machines have been developed. The...
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Contact Mechanics Analysis of Fractal Surfaces Considering Elliptical Asperity with Elliptical Geometry
AbstractThe purpose of this paper is to present a fractal model of normal contact stiffness of joint surfaces based on elliptical asperity. The...
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On the creep problem of soft-rigid interfaces: analysis of the normal contact behavior and application of creep models
In this study, we examined at the grain-scale the normal contact behavior of rigid-soft interfaces via a series of micromechanical experiments, in...
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Plastic deformation effect on contact behaviour in granular materials
Contact tests on machined and natural granite showed that extensive plastic deformation which extends to the core shape is happening before the...
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A theoretical model to predict normal contact characteristics for elasto-plastic collisions
This article presents a theoretical prediction of elasto-plastic collision during normal impact. A new theoretical model is proposed to estimate...
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Modal Coupling Vibration Analysis of Bolted Casing System Based on Surface Contact Mechanics
AbstractThe casing system is the skeleton of the aero-engine, and its vibration directly reflects the vibration level of the whole aero-engine....
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A Multi-Scale Stiffness Fractal Model of Joint Interfaces
Stiffness characterization of mechanical interfaces is quite crucial for the analysis of several tribological behaviors. In the research of...
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Stiffness-dependent active wetting enables optimal collective cell durotaxis
The directed migration of cellular clusters enables morphogenesis, wound healing and collective cancer invasion. Gradients of substrate stiffness...
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Contact Stiffness Measurements with an Atomic Force Microscope
AbstractWe propose a method for improving accuracy of nanomechanical measurements by an atomic force microscope. We describe the contact interaction...
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DEM simulation of small strain and large strain behaviors of granular soils with a coherent contact model
AbstractDiscrete element method is widely used to study the macroscopic behaviors of granular soils subjected to various loading conditions at a...
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A study of wave propagation and stiffness anisotropy in anisotropically loaded granular material-synthetic fiber binary systems
AbstractThe influence of polypropylene fiber inclusion on the wave propagation parameters and stiffness anisotropy of granular materials was examined...
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A semi-empirical re-evaluation of the influence of state on elastic stiffness in granular materials
This study uses data acquired from three-dimensional discrete element method simulations to reconsider what measure of state can be used to predict...
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Analysis of the contact critical pressure of collapsible tubes for biomedical applications
The onset of self-excited oscillations in airways and blood vessels is a common phenomenon in the human body, connected to both normal and...
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Human red blood cell membrane stiffness: why should we study it and how?
The primary function of the human red blood cells (RBCs) is to transport oxygen to all tissues in the human body for the process of cellular...
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Gough-Stewart Platform Stiffness and Eigenmodes Evaluation
This paper presents an evaluation of the stiffness and eigenmodes of a Stewart platform during changing positions in the workspace. Stiffness and...
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Probabilistic-based analysis and model selection of the tangential stiffness reduction: displacement curves of nonconforming contacts
Granular materials are of interest in a broad range of applications and the use of discrete-based numerical tools has been proved very promising in...
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Approximate coefficient of restitution for nonlinear viscoelastic contact with external load
We derive an approximate coefficient of restitution (CoR) for a single bead impacting the ground when a constant external load acts upon the...
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Influence of gradation range on strong contact network in granular materials
AbstractThe topology of the granular material in the microscale affects the macroscale mechanical responses. Based on graph theory, the particles can...
