Measuring Quasi-Static and Kinetic Coefficient of Restitution Simultaneously using Levitation Mass Method: Experiment and Simulation

TL;DR

This paper investigates the peaks observed in the levitation mass method (LMM), attributing them to bouncing phenomena, and uses both experiments and molecular dynamics simulations to analyze the quasi-static and kinetic coefficients of restitution.

Contribution

It introduces a combined experimental and simulation approach to measure the coefficients of restitution in LMM, revealing bounce effects that are often mistaken for noise.

Findings

Bounce from the plate causes peaks in LMM signals.

Molecular dynamics simulations confirm bounce behavior.

The study provides insights into the coefficients of restitution in LMM.

Abstract

Observed peaks in a levitation mass method (LMM), which are usually addressed to signal noise, are discussed in this work. This phenomenon arises due to bounce from plate which is collided by moving part in LMM measurement system. Normally, the moving part and the plate stick very good after their first contact. Simulation using molecular dynamics (MD) method is performed to prove the bounce prognosis.