scholarly journals Discrete element modelling of tomato tissue deformation and failure at the cellular scale

Soft Matter ◽  
2019 ◽  
Vol 15 (16) ◽  
pp. 3362-3378 ◽  
Author(s):  
Elien Diels ◽  
Zi Wang ◽  
Bart Nicolai ◽  
Herman Ramon ◽  
Bart Smeets
Keyword(s):  
Plant Tissue ◽  
Discrete Element ◽  
Discrete Element Modelling ◽  
Tissue Deformation ◽  
Deformation And Failure ◽  
Tissue Model ◽  
Element Modelling ◽  
Cell Rupture ◽  
Model Cell ◽  
Mechanical Plant

In this work, a 3D micro-mechanical plant tissue model that is able to model cell rupture and inter-cellular debonding and thus provide more insight in the micro-mechanics was developed.

scholarly journals A new time-delayed periodic boundary condition for discrete element modelling of railway track under moving wheel loads

2021 ◽  
Vol 23 (4) ◽  
Author(s):  
Huiqi Li ◽  
Glenn McDowell ◽  
John de Bono
Keyword(s):  
Boundary Condition ◽  
Periodic Boundary Condition ◽  
Periodic Boundary ◽  
Discrete Element ◽  
Contact Forces ◽  
Railway Track ◽  
Discrete Element Modelling ◽  
Fixed Boundary ◽  
Element Modelling ◽  
New Time

Abstract A new time-delayed periodic boundary condition (PBC) has been proposed for discrete element modelling (DEM) of periodic structures subject to moving loads such as railway track based on a box test which is normally used as an element testing model. The new proposed time-delayed PBC is approached by predicting forces acting on ghost particles with the consideration of different loading phases for adjacent sleepers whereas a normal PBC simply gives the ghost particles the same contact forces as the original particles. By comparing the sleeper in a single sleeper test with a fixed boundary, a normal periodic boundary and the newly proposed time-delayed PBC (TDPBC), the new TDPBC was found to produce the closest settlement to that of the middle sleeper in a three-sleeper test which was assumed to be free of boundary effects. It appears that the new TDPBC can eliminate the boundary effect more effectively than either a fixed boundary or a normal periodic cell. Graphic abstract

Discrete element modelling of track ballast capturing the true shape of ballast stones

2021 ◽  
Vol 386 ◽  
pp. 144-153
Author(s):  
Jacob Mortensen ◽  
Joachim Faldt Faurholt ◽  
Emil Hovad ◽  
Jens Honoré Walther
Keyword(s):  
Discrete Element ◽  
Discrete Element Modelling ◽  
Element Modelling ◽  
True Shape
Sign in / Sign up

Export Citation Format

Share Document