The Edinburgh Elasto-Plastic Adhesion (EEPA) Model... in EDEM 2018!

Tue, 10 Oct 2017 00:00:00 +0000

This post was originally published on www.edemsimulation.com.

Since Altair’s acquisition of EDEM in 2020 the original post has been taken down. A cached copy of that post can be found here.

Introduction

EDEM has just announced the new 2018 version of the software that includes many new features with a focus on performance on productivity. I don’t normally show much interest in the release of new version of software but this is a bit different. I’m excited to announce that the Edinburgh Elasto-Plastic Adhesion (EEPA) Model¹^,² which started it’s life in my Ph.D.

This is a significant milestone and highlights how popular the model has become since it’s release as an API model to EDEM users just over 3 years ago. EDEM is considered the leading Discrete Element Method software application for bulk material simulation in the market and is used my many companies across fields as varied as mining, food manufacturing and pharmaceuticals. EDEM is also used by thousands of researchers in more then 200 universities around the world.

In parallel, a new contact model for modeling complex cohesive materials such as fine dry powders, organic materials, soil and ore fines is now available as a standard built-in contact model in EDEM. This model, called Edinburgh Elasto-Plastic Adhesion (EEPA), offers a solution for cohesive granular solids whose behavior changes depending on the stresses experienced by the material beforehand. It can help realistically simulate applications such as material adhesion to earthmoving equipment, soil-tyre interaction or for instance a cohesive powder compaction process such as tabletting.

This will allow users to take advantage of the EEPA model without the computational cost of running the API. This could be as much as 30% reduction in runtime for your simulations - effectively for free!! All of the features of the API model ³^,⁴ exist and are nicely integrated into the GUI. There should also be a GPU implementation of the modelling making bigger simulations more tractable.

EEPA now available in Contact Model Physics

Inputting EEPA Parameters

I hope this helps making simulation of cohesive granular materials more accessible to more user and that the models popularity continues to grow.

Citations

John P. Morrissey, 2013. Discrete Element Modelling of Iron Ore Fines to Include the Effects of Moisture and Fines. Ph.D. Thesis , p.331. Available at: https://era.ed.ac.uk/handle/1842/8270

Cite PDF Project

S. C. Thakur, John P. Morrissey, Jin Sun, Jian-Fei Chen, Jin Y. Ooi, 2014. Micromechanical analysis of cohesive granular materials using discrete element method with an adhesive elasto-plastic contact model. Granular Matter , vol.16, pp.383-400. Available at: http://link.springer.com/10.1007/s10035-014-0506-4

Cite PDF Project DOI

References

Morrissey, J.P., Discrete Element Modelling of Iron Ore Fines to Include the Effects of Moisture and Fines, University of Edinburgh, 2013. https://www.era.lib.ed.ac.uk/handle/1842/8270. ↩︎
Thakur, S.C., Morrissey, J.P., Sun, J., Chen, J.F., & Ooi, J.Y. (2014). Micromechanical analysis of cohesive granular materials using discrete element method with an adhesive elasto-plastic contact model. Granular Matter, 16(3), 383–400. doi:10.1007/s10035-014-0506-4 ↩︎
Morrissey, J.P., Thakur, S., & Ooi, J.Y. (2014a). EDEM Contact Model: Adhesive Elasto-Plastic Model. University of Edinburgh. doi:10.13140/RG.2.2.10139.18724 ↩︎
Morrissey, J.P., Thakur, S., & Ooi, J.Y. (2014b). Using the Elasto-plastic Adhesion Model: Example Problem. University of Edinburgh. doi:10.13140/RG.2.2.10978.04809 ↩︎

EDEM Contact Model: Timoshenko Beam Bond Model, Version 2.4

Fri, 18 Aug 2017 00:00:00 +0000

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Using the Timoshenko Beam Bond Model, Version 2.4: Example Problem

Fri, 18 Aug 2017 00:00:00 +0000

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Beyond Basic: Advanced simulations in EDEM using the Application Programming and Coupling Interfaces

Wed, 04 May 2016 12:25:00 +0000

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EDEM Contact Model: Timoshenko Beam Bond Model

Wed, 18 Jun 2014 00:00:00 +0000

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Using the Timoshenko Beam Bond Model: Example Problem

Wed, 18 Jun 2014 00:00:00 +0000

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EDEM | John P. Morrissey

The Edinburgh Elasto-Plastic Adhesion (EEPA) Model... in EDEM 2018!

Introduction

Citations

References

EDEM Contact Model: Timoshenko Beam Bond Model, Version 2.4

Using the Timoshenko Beam Bond Model, Version 2.4: Example Problem

Beyond Basic: Advanced simulations in EDEM using the Application Programming and Coupling Interfaces

EDEM Contact Model: Timoshenko Beam Bond Model

Using the Timoshenko Beam Bond Model: Example Problem