Collision of viscoelastic spheres: compact expressions for the coefficient of normal restitution
Patric Müller1, Thorsten Pöschel
1Institute for Multiscale Simulation, Universität Erlangen-Nürnberg, Nägelsbachstraße 49b, Erlangen D-91052, Germany.
Abstract:
The coefficient of restitution of colliding viscoelastic spheres is known analytically as a complete series expansion in terms of the impact velocity where all (infinitely many) coefficients are known. While being analytically exact, this result is not suitable for applications in efficient event-driven molecular dynamics (eMD) or direct simulation Monte Carlo (DSMC) methods. Based on the analytic result, here we derive expressions for the coefficient of restitution that allow for application in efficient eMD and DSMC simulations of granular systems.
More Related Videos
07:49Development of an Experimental Setup for the Measurement of the Coefficient of Restitution under Vacuum Conditions
Published on: March 29, 2016
08:58Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid
Published on: December 2, 2022
Related Concept Videos
Types of Collisions - II
Elastic Collisions: Introduction
Elastic Collisions: Case Study
Impact
When particles with different initial velocities collide, they induce deformation by applying equal and opposite impulses. At the point of maximum deformation, the particles move together with...
Types of Impact
The coefficient of restitution is a metric for understanding the dynamics of impacts. It quantifies the ratio of relative velocity...
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
