TY - JOUR
T1 - CG-enriched concurrent multi-scale modeling of dynamic surface interactions between discrete particles and solid continua
AU - Cheng, Hongyang
AU - Luding, Stefan
AU - Weinhart, Thomas
N1 - Funding Information:
Hongyang Cheng acknowledges funding from the Sectorplan Béta & Techniek of the Dutch Government. Thomas Weinhart acknowledges funding from the NWO-TTW project No.16604 Virtual Prototyping of Particulate Processes (ViPr)—Design and Optimisation via Multi-scale Modelling and Rapid Prototyping. This work made use of the Dutch national e-infrastructure with the support of the SURF Cooperative (Grant No. EINF-3381). We thank Anthony R. Thornton for the initial discussions on the implementation of FEM-DEM coupling in oomph-lib and Mercury-DPM and Mohammed. B. A. Hassan for defining the problem of deformable objects impacting granular beds, as part of his EngD project.
Publisher Copyright:
© 2023, The Chinese Society of Theoretical and Applied Mechanics and Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2023/1
Y1 - 2023/1
N2 - The interaction between granular materials and deformable structures is relevant to many industries, such as mining, construction, and powder processing. Surface coupling between the discrete (DEM) and the finite element method (FEM) is commonly used to numerically describe particle-continuum interactions. Using a recently developed “surface-coupling” method, enriched by coarse graining, a micro-macro transition technique to extract continuum fields from discrete particle data, we study the time evolution of linear momenta and energies in various particle-continuum systems and their dependencies on the coarse-graining (CG) width, the support of the smoothing kernel. Via three numerical examples including (1) a dense granular flow impacting on a flexible obstacle, (2) a viscoelastic cube bouncing and resting on a frictional granular bed, and (3) a monolayer of particles flowing on a cantilever, we show that CG-enriched surface coupling not only leads to more accurate predictions but also reduces excess energies numerically generated by the coupling method, and CG is more effective as the particle-structure interaction becomes dynamic. By varying the CG width, we observe stronger attenuation, decreasing the magnitudes of high-frequency oscillations, facilitating stress relaxation in dissipative coupled systems, and that the identification of the optimal CG width is indeed problem-dependent. [Figure not available: see fulltext.]
AB - The interaction between granular materials and deformable structures is relevant to many industries, such as mining, construction, and powder processing. Surface coupling between the discrete (DEM) and the finite element method (FEM) is commonly used to numerically describe particle-continuum interactions. Using a recently developed “surface-coupling” method, enriched by coarse graining, a micro-macro transition technique to extract continuum fields from discrete particle data, we study the time evolution of linear momenta and energies in various particle-continuum systems and their dependencies on the coarse-graining (CG) width, the support of the smoothing kernel. Via three numerical examples including (1) a dense granular flow impacting on a flexible obstacle, (2) a viscoelastic cube bouncing and resting on a frictional granular bed, and (3) a monolayer of particles flowing on a cantilever, we show that CG-enriched surface coupling not only leads to more accurate predictions but also reduces excess energies numerically generated by the coupling method, and CG is more effective as the particle-structure interaction becomes dynamic. By varying the CG width, we observe stronger attenuation, decreasing the magnitudes of high-frequency oscillations, facilitating stress relaxation in dissipative coupled systems, and that the identification of the optimal CG width is indeed problem-dependent. [Figure not available: see fulltext.]
KW - Coarse-graining
KW - Concurrent multi-scale modeling
KW - Granular flows
KW - Particle-structure interaction
KW - Surface coupling
KW - UT-Hybrid-D
KW - 2023 OA procedure
UR - http://www.scopus.com/inward/record.url?scp=85146622522&partnerID=8YFLogxK
U2 - 10.1007/s10409-022-22218-x
DO - 10.1007/s10409-022-22218-x
M3 - Article
AN - SCOPUS:85146622522
SN - 0567-7718
VL - 39
JO - Acta Mechanica Sinica/Lixue Xuebao
JF - Acta Mechanica Sinica/Lixue Xuebao
IS - 1
M1 - 722218
ER -