Publication: Evaluation of the Impact Behaviour of a HDPE and its Subsequent Application to DEM Simulations
All || By Area || By Year| Title | Evaluation of the Impact Behaviour of a HDPE and its Subsequent Application to DEM Simulations | Authors/Editors* | P. A. Moysey, M. R. Thompson |
|---|---|
| Where published* | Canadian Society of Chemical Engineers Conference |
| How published* | Proceedings |
| Year* | 2005 |
| Volume | Toronto, ON. |
| Number | |
| Pages | |
| Publisher | |
| Keywords | |
| Link | |
| Abstract |
The discrete particle approach for modeling granular mechanics (solids flow) has grown in popularity over the past decade, though in the field of polymer processing little attention has been given. Due to the lack of interest in solids transport by researchers in this field, there is insufficient knowledge available to adequately understand how a solid particle of plastic will respond in the event of a contact event (i.e. contact mechanics). For on-going studies with regards to modeling the solids transport in a single-screw and groove-feed extruder by the discrete element method (DEM), understanding the contact mechanisms of a polymer is necessary to accuracy in our predictions. Experiments have been conducted to determine the contact force-displacement behaviour of a high-density polyethylene (HDPE) with a AISI-4140HT steel anvil. Normal and oblique impacts were measured at different incidence velocities using a high-speed digital camera. The angle, and translational and rotational velocity of the rebounding particle was used to calculate the coefficient of restitution for HDPE under different impact conditions. The results of the experiments will be used to formulate a new contact model for HDPE to be used in our DEM simulations of the solids-conveying and solids-inflow zone of a single-screw extruder. |
Back to page 88 of list