How is the contact radius defined for sphero-cylinder and how bonding V2 model work in this case?
Best Answer
-
Hi Kamit,
The bonds are formed at the contact point, which is more like point 2.Regards
Stephen
0
Altair EmployeeAnswers
-
Hi Kamit,
The bonding V2 model was originally developed only for spheres but it does work for sphero-cylinders however you can see some 'creep' which can give an unwanted permanent deformation of the bond in some cases.
In Bonding V2 the bonds are formed if two elements are in contact (i.e. the Contact Radii overlap). The bond is calculated from the contact point and forces and torques added based on the displacement from this contact point.
There is a new model released in EDEM 2025 'fibres bonding' which is developed for sphero-cylinders and can support overlapped sphero-cylinders so that you can get a continuous shape rather than having to bond at the ends of the cylinders (As your have in your image).
As well as allowing the bond point to be overlapped at the end of the sphero-cylinder the fibers bonding model also eliminates 'creep' which can occur in bonding v2. The creep occurs if the contact point moves during simulation and is not always directly taken into account with the bond forces.
Regards
Stephen
0 -
My simple questions are
(1) Bond formed at the end of a Sphero-cylinder ?
(2) Bond formed around the whole Sphero-cylinder?
In which cases EDEM work properly. I have found a research article where a bond only formed at the end to end of the Sphero-cylinder. Please answer clearly because your answer is so complicated I can't understand.
[1] Guo et al., (2018). A bonded sphero-cylinder model for the discrete element simulation of
elasto-plastic fibers, Chemical Engineering Science 175, 118–129.0 -
Hi Kamit,
The bonds are formed at the contact point, which is more like point 2.Regards
Stephen
0