Coefficient of restitution
View article: Tuning and Optimal Performance of an Asymmetric Vibro-Impact Nonlinear Energy Sink with Dry Friction
Tuning and Optimal Performance of an Asymmetric Vibro-Impact Nonlinear Energy Sink with Dry Friction Open
This paper presents a design-oriented framework for asymmetric vibro-impact nonlinear energy sinks (VI-NES) with dry friction. In this context, asymmetry arises from directional differences in friction and restitution properties. The propo…
View article: The hydrodynamic limit of viscoelastic granular gases
The hydrodynamic limit of viscoelastic granular gases Open
We obtain the first rigorous derivation of an incompressible Navier-Stokes-Fourier system with self-consistent and time-dependent forcing terms from the inelastic hard-spheres Boltzmann equation associated to the relevant case of viscoelas…
View article: Impact of ferrofluid droplets on hydrophobic surfaces with presence of magnetic fields
Impact of ferrofluid droplets on hydrophobic surfaces with presence of magnetic fields Open
The motion of ferrofluid droplet on hydrophobic surface has attracted significant research interests due to its potential applications in biomedicine, sensor technologies, and oil-water separation processes. This study investigates ferrofl…
View article: The Frictional Impact with Rebound for 3D Printed Surfaces
The Frictional Impact with Rebound for 3D Printed Surfaces Open
This research explores the oblique impact with rebound of a rigid rod and 3D-printed surfaces with varying infill ratios. A visco-elastic contact model is developed using normal impact experiments and then confirmed with oblique impact exp…
View article: Resolving Kane's Puzzle in Oblique Collisions of Rigid Bodies
Resolving Kane's Puzzle in Oblique Collisions of Rigid Bodies Open
We examined the asymmetric deformation in collisions and the transition conditions from oblique to normal collisions and non-collisions to address the problem of oblique collisions of rigid bodies in classical mechanics. A closed solution …
View article: Resolving Kane's Puzzle in Oblique Collisions of Rigid Bodies
Resolving Kane's Puzzle in Oblique Collisions of Rigid Bodies Open
We examined the asymmetric deformation in collisions and the transition conditions from oblique to normal collisions and non-collisions to address the problem of oblique collisions of rigid bodies in classical mechanics. A closed solution …
View article: Research and Application of Impact Damage Mechanism of Main Chutes in Metal Mines
Research and Application of Impact Damage Mechanism of Main Chutes in Metal Mines Open
The primary mechanism leading to ore pass wall failure in a main ore pass is the cumulative impact damage inflicted by ore-rock blocks during their downward transport. These blocks, after being conveyed from underground working faces to th…
View article: Modeling the Contact Surfaces Formed by Pebble Collisions: Application to Formation of Comet 67P/Churyumov--Gerasimenko
Modeling the Contact Surfaces Formed by Pebble Collisions: Application to Formation of Comet 67P/Churyumov--Gerasimenko Open
Modeling the contact surfaces formed by pebble collisions is crucial to understanding the formation process of comets, which are thought to be composed of pebbles. In this paper, we develop a new model to estimate the contact surface radiu…
View article: Modeling the Contact Surfaces Formed by Pebble Collisions: Application to Formation of Comet 67P/Churyumov--Gerasimenko
Modeling the Contact Surfaces Formed by Pebble Collisions: Application to Formation of Comet 67P/Churyumov--Gerasimenko Open
Modeling the contact surfaces formed by pebble collisions is crucial to understanding the formation process of comets, which are thought to be composed of pebbles. In this paper, we develop a new model to estimate the contact surface radiu…
View article: A calibration‐less, bonded‐sphere model for highly deformable particle systems in a discrete element method framework
A calibration‐less, bonded‐sphere model for highly deformable particle systems in a discrete element method framework Open
Here, we introduce a calibration‐less bonded‐sphere model to describe three‐dimensional, linear elastic, highly deformable particles. Voronoi tessellation is used to partition a particle into multiple sub‐spheres, generating a virtual bond…
View article: Restitution coefficient dependence of the pressure of a macroscopic active particle
Restitution coefficient dependence of the pressure of a macroscopic active particle Open
Active matter systems serve as a paradigm for diverse nonequilibrium phenomena. Macroscopic realizations of active particles may exhibit inelastic collisions. We study the restitution coefficient dependence of the pressure exerted by a sin…
View article: A Preliminary Mechanics-Informed Machine Learning Framework for Objective Assessment of Parkinson’s Disease and Rehabilitation Outcomes
A Preliminary Mechanics-Informed Machine Learning Framework for Objective Assessment of Parkinson’s Disease and Rehabilitation Outcomes Open
Background/Objectives: Non-invasive methods for evaluating rehabilitation outcomes in Parkinson’s disease (PD) remain limited. This preliminary study proposes a mechanics-informed machine learning (ML) framework integrating force-plate dat…
View article: Microscopic model for a granular solid-liquid-like phase transition
Microscopic model for a granular solid-liquid-like phase transition Open
Forced granular matter in confined geometries presents phase transitions and coexistence. Depending on the system and forcing parameters, liquid-vapor and liquid-solid co-existing states are possible. For the solid-liquid coexistence that …
View article: Microscopic model for a granular solid-liquid-like phase transition
Microscopic model for a granular solid-liquid-like phase transition Open
Forced granular matter in confined geometries presents phase transitions and coexistence. Depending on the system and forcing parameters, liquid-vapor and liquid-solid co-existing states are possible. For the solid-liquid coexistence that …
View article: Clasificación temática asistida por IA y su aplicación en una revisión sistemática sobre OpenAlex
Clasificación temática asistida por IA y su aplicación en una revisión sistemática sobre OpenAlex Open
[153] Resumen Esta presentación examina la clasificación temática asistida por inteligencia artificial en el contexto de una revisión sistemática de la literatura relacionada con la plataforma OpenAlex, en el marco de la ciencia abierta y …
View article: Clasificación temática asistida por IA y su aplicación en una revisión sistemática sobre OpenAlex
Clasificación temática asistida por IA y su aplicación en una revisión sistemática sobre OpenAlex Open
[153] Resumen Esta presentación examina la clasificación temática asistida por inteligencia artificial en el contexto de una revisión sistemática de la literatura relacionada con la plataforma OpenAlex, en…
View article: A STUDY ON THE INFLUENCING FACTORS OF CORN KERNEL COLLISION RESTITUTION COEFFICIENT BASED ON THE OBLIQUE IMPACT COLLISION THEORY
A STUDY ON THE INFLUENCING FACTORS OF CORN KERNEL COLLISION RESTITUTION COEFFICIENT BASED ON THE OBLIQUE IMPACT COLLISION THEORY Open
Corn kernels collide with the pipe wall during pneumatic conveying, which affects their quality. Based on the theory of oblique impact collision dynamics, this paper investigates the breakage of corn kernels at impact angles ranging from 1…
View article: Experimental and Numerical Study on the Restitution Coefficient and the Corresponding Elastic Collision Recovery Mechanism of Rapeseed
Experimental and Numerical Study on the Restitution Coefficient and the Corresponding Elastic Collision Recovery Mechanism of Rapeseed Open
In this study, we aimed to address the lack of systematic research on key collision dynamics parameters (elastic restitution coefficient) in the full mechanization of rapeseed operations, which hinders the development of precision agricult…
View article: Experimental Measurements on the Coefficient of Restitution of Colliding Irregular Volcanic Particles
Experimental Measurements on the Coefficient of Restitution of Colliding Irregular Volcanic Particles Open
Dense volcanic granular flows are polydisperse in terms of grain size and density, and their flow characteristics are mainly governed by particle‐particle collisions and frictional forces acting at the boundaries. The parameter measuring t…
View article: Measurement of Energy Loss and Coefficient of Restitution in Inelastic Collisions Using Tracker and Phyphox
Measurement of Energy Loss and Coefficient of Restitution in Inelastic Collisions Using Tracker and Phyphox Open
Modern smartphones incorporate a variety of high-precision, highly sensitive sensors, and companion apps are being developed to leverage these capabilities. This experiment explores how the phyphox app can enhance traditional methods for m…
View article: Analysis measurements of millet collision coefficient of restitution for mechanized seeding
Analysis measurements of millet collision coefficient of restitution for mechanized seeding Open
The millet collision coefficient of restitution (COR) is one of the important elementary physical parameters for researching the precision hole seeding system. In this study, to explore the factors affecting the bounce issue observed when …
View article: Effect of Moisture Content and Normal Impact Velocity on the Coefficient of Restitution of ‘Memory’ Wheat Grains
Effect of Moisture Content and Normal Impact Velocity on the Coefficient of Restitution of ‘Memory’ Wheat Grains Open
This study analyses the dynamic impact between winter wheat grains (‘Memory’ cultivar) and a flat metal surface under normal collisions. Four moisture levels (7%, 10%, 13% and 16%) and impact velocities from 1.0 to 4.5 m·s−1 were chosen to…
View article: Experimental Investigation of the Normal Coefficient of Restitution in Rockfall Collisions: Influence and Interaction of Controlling Factors
Experimental Investigation of the Normal Coefficient of Restitution in Rockfall Collisions: Influence and Interaction of Controlling Factors Open
Rockfalls pose significant threats to infrastructure, transportation routes, and human safety in mountainous regions, making them a critical concern in natural hazard and risk management. Accurate prediction of rockfall behavior is essenti…
View article: Simulation Analysis and Experimental Verification of High-Speed Impact of Rocky Asteroids
Simulation Analysis and Experimental Verification of High-Speed Impact of Rocky Asteroids Open
Kinetic impact is an effective way to deal with threatening asteroids, and the momentum transfer coefficient during the impact process is an effective indicator for evaluating the impact effect. This article is based on the use of the Smoo…
View article: The effects of spin and material on the coefficient of restitution for oblique impacts of solid balls
The effects of spin and material on the coefficient of restitution for oblique impacts of solid balls Open
The normal coefficient of restitution was considered for normal and oblique impacts of solid sports balls with a rigid wall. Using speeds representative of play, was greater than e for impacts with the same ball and speed …
View article: The Effect of Tennis Ball Pressure on Coefficient of Restitution and Force on Hand
The Effect of Tennis Ball Pressure on Coefficient of Restitution and Force on Hand Open
Wrist injury is prevalent among tennis players. While it is well known that switching the brands of tennis balls can greatly increase the risk of injury, this study hypothesized that changes in ball pressure, measured by the force on hand …
View article: The restitution coefficient value and damage of composite shields protecting the chassis of a rail vehicle
The restitution coefficient value and damage of composite shields protecting the chassis of a rail vehicle Open
View article: A calibration-less, bonded-sphere model for highly deformable particle systems in a discrete element method framework
A calibration-less, bonded-sphere model for highly deformable particle systems in a discrete element method framework Open
Here, we introduce a calibration-less bonded-sphere model to describe three-dimensional, linear elastic, highly deformable particles. Voronoi tessellation is used to partition a particle into multiple sub-spheres, generating a virtual bond…
View article: The influence of the restitution coefficient and multiple impacts on the force exerted by ISO tapping machines
The influence of the restitution coefficient and multiple impacts on the force exerted by ISO tapping machines Open
ISO tapping machines serve as absolute standards to describe the sensitivity of buildings and building elements in terms of impact noise. They consist of five hammers with a mass of 500 g each. The hammers strike the test object at a veloc…
View article: Stochastic Dynamics of Nonlinear Piezoelectric Vibration Energy Harvesting System with Inelastic Impact
Stochastic Dynamics of Nonlinear Piezoelectric Vibration Energy Harvesting System with Inelastic Impact Open