NDLI: A new method for the determination of particle contact stiffness

Content Provider	Springer Nature Link
Author	Paulick, M. Morgeneyer, M. Kwade, A.
Copyright Year	2014
Abstract	The behaviour of granular material can be predicted numerically with the discrete element method. This method potentially uses material properties to describe the behaviour of a particle and its interactions with other particles or walls. One characteristic property is the particle contact stiffness. The work described herein reviews on one hand shortly different types of stiffness in particle mechanics and on the other hand, with regard to the experimental work, an overview of the newly developed method to examine the contact behaviour between two particles is given. The advantage of this approach is the exclusion of possible equipment deformation and is, thus, only referring to the deformation of two particles in contact. Therefore, especially the deformation of asperities on the particles’ surface can be taken into account. A variety of contact experiments on single and two particles were conducted to validate the new method. Glass beads with a particle diameter from $$\hbox {d}_\mathrm{p}=$$ 0.8 to $$3.0\hbox { mm}$$ were chosen and a maximum compression force of $$\hbox {F}= 80\hbox { N}$$ . While only one material type was studied, this work has the broader implication to present a method for determining a material’s contact stiffness and its evolution during increasing contact. This study is part of the PARDEM research network: www.pardem.eu .
Starting Page	83
Ending Page	93
Page Count	11
File Format	PDF
ISSN	14345021
Journal	Granular Matter
Volume Number	17
Issue Number	1
e-ISSN	14347636
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-12-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Micromechanics Contact mechanics Particle Normal contact stiffness DEM simulation Experiment Soft and Granular Matter, Complex Fluids and Microfluidics Engineering Fluid Dynamics Materials Science Geoengineering, Foundations, Hydraulics Industrial Chemistry/Chemical Engineering Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Mechanics of Materials Materials Science

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