Article
Computer Science, Interdisciplinary Applications
Sudharsan Srinivasan, Harry E. A. Van den Akker, Orest Shardt
Summary: The research utilized an immersed boundary-lattice Boltzmann method to study the response of dense granular suspensions to time-varying shear rates and flow reversals. The results showed that the contribution of tangential lubrication corrections to shear stress is dominant when solid concentration exceeds 30%. Weak shear-thinning was found for intermediate solids fractions, while weak shear-thickening was observed for solid concentrations above 40%.
COMPUTERS & FLUIDS
(2021)
Article
Chemistry, Physical
Riccardo Artoni, Michele Larcher, James T. Jenkins, Patrick Richard
Summary: This study reports measurements of self-diffusion coefficients in collisional shearing flows of frictional, inelastic spheres, highlighting the impact of solid volume fractions on diffusivity. Comparison with empirical scaling and kinetic theory predictions reveals discrepancies, suggesting the need for further investigation into the diffusion behavior of such systems.
Article
Engineering, Multidisciplinary
Fuzhen Chen, Tengda Shi, Hong Yan, Hongfu Qiang
Summary: A new constitutive model was designed in this study to consider the cohesion in dense granular media. The model includes a linear elastic-plastic constitutive relationship for the solid-like phase and a viscoplastic constitutive model for the liquid-like phase. Smoothed particle hydrodynamics method was used to discretely solve the new model, and its effectiveness was verified through various cases.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2022)
Article
Mechanics
Saisai Cao, Yu Wang, Haoming Pang, Junshuo Zhang, Yuxuan Wu, Shouhu Xuan, Xinglong Gong
Summary: In this study, the criterion for the occurrence of shear jamming in dense granular suspension is determined by studying the first normal stress difference N-1. It is found that shear jamming is dominated by frictional contact, and the jamming onset stress decreases with increasing particle volume fraction. The state of dense granular suspension can be distinguished in the state diagram via the analysis of N-1, aiding understanding of the rheology of concentrated particle suspensions.
JOURNAL OF RHEOLOGY
(2021)
Article
Engineering, Chemical
Guangyang Hong, Yanzhi Zhou, Jian Li
Summary: Understanding the relaxation process of driven dense granular materials is crucial to the avalanche dynamics and earthquake triggering in geophysics. However, quantitative description or prediction of vibrated dense flows remains largely unexplored. In this study, we quantitatively describe the vibration dependency of dynamical heterogeneities in a vibrated inclined flow exhibiting large hysteresis of the avalanche angle, motivated by theoretical models developed for the glass transition.
Article
Chemistry, Physical
Farnaz Fazelpour, Karen E. Daniels
Summary: In this paper, the influence of boundary shape, particularly roughness, on wall slip in dense granular flows is investigated. Experiments are conducted on a quasi-2D annular shear cell to examine the influence of different boundary properties. It is found that the full flow profile can be accurately captured using a single set of model parameters, with the wall slip velocity set by direct observation. The measurements also reveal a universal relationship between dimensionless fluidity and velocity.
Article
Physics, Fluids & Plasmas
Yongkai Chen, Carlo Scalo
Summary: Investigation on the effects of wall permeability on isothermal-wall supersonic channel flow turbulence was conducted using large-eddy simulations. Results showed that significant changes in near-wall turbulence structures occurred only when the wall impedance was set to 0.50, primarily due to contribution from instability waves triggered by permeability.
PHYSICAL REVIEW FLUIDS
(2021)
Article
Mechanics
Nils T. Basse
Summary: The study focuses on the global high Reynolds number scaling of streamwise turbulence intensity squared, with a transition to asymptotic scaling found at a friction Reynolds number of about 11,000.
Article
Multidisciplinary Sciences
Xiaohui Cheng, Shize Xiao, Alex Sixie Cao, Meiying Hou
Summary: This study investigates transitional regimes in granular shear flows, proposing a unified model to describe transitions between different flow states based on triaxial shear flow tests. The importance of granular viscosity under low pressure is highlighted in the transition between quasi-static and moderate Isotach type flow states.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Multidisciplinary
Fabio De Angelis
Summary: In this paper, a multifield variational formulation of non-smooth viscoplasticity is presented, which is suitable for dealing with multivalued operators and non-smooth functions characterized by singularities. This approach proves to be helpful in describing the geometrical framework of the non-smooth viscoplastic problem and guiding enhancements towards other kinds of plastic and viscoplastic material behavior.
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
(2022)
Article
Mechanics
Fabio De Angelis, Carosena Meola
Summary: The paper discusses plastic and viscoplastic evolutive laws and constitutive behavior for multisurface materials and structures. By using non-smooth evolutive laws and constitutive relations, it effectively models non-smooth elastoplastic problems with non-smooth yield criteria and non-differentiable functions. Additionally, experimental investigations using infrared thermography provide evidence for the validity of alternative approaches and extended formulations in non-smooth multisurface elastoplasticity.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Civil
Baris Mert Pehlivan, Eray Baran, Cem Topkaya, Yagmur Topcuoglugil Isik
Summary: This study aims to fill the gap of limited test data on CFS-framed shear walls with OSB panels on both sides using relatively small fastener spacing. Experimental tests showed that the predominant failure mode of the tested walls was buckling of boundary studs. Numerical modeling using different approaches showed good agreement with the measured response.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Geological
Wei Hu, Yangshuai Zheng, Mauri Mcsaveney, Qiang Xu, Runqiu Huang, Li Zhou
Summary: Shear zone is widely observed in natural faults, landslides, and laboratory experiments. Understanding the evolution of shear zones in granular materials is crucial in studying the dynamics of landslides and faults. In this study, ring-shear experiments and high-resolution X-ray CT were used to investigate the evolution of strain localization and shear-zone internal structure in cohesive and non-cohesive granular materials. The results revealed that shear displacement led to rounding of large particles inside the shear zone and the formation of fine-particle layers on either side of the shear zone during shear localization.
ENGINEERING GEOLOGY
(2023)
Article
Engineering, Chemical
Fanjing Meng, Huabo Liu, Shaozhen Hua, Minghua Pang
Summary: This study investigates the flow characteristics and mechanical mechanisms of granular flows in dense sheared granular systems, exploring the effects of mechanical parameters on fluctuation velocity and solid volume fraction. Results show that granules at different positions in the system exhibit varying fluctuation velocities, while changes in mechanical parameters directly influence the solid volume fraction of the flow.
Article
Mechanics
C. Garat, S. Kiesgen de Richter, P. Lidon, A. Colin, G. Ovarlez
Summary: This paper investigates the impact of vibrations on the behavior of dense granular suspensions. It is found that vibrations can tune the transition from solidlike to liquidlike behavior in these suspensions. Experimental results show that under vibrations, the suspensions of frictional particles exhibit liquidlike behavior similar to that of nonvibrated suspensions of frictionless particles. As the shear rate increases, the suspensions undergo shear thickening and eventually experience shear-jamming, where vibrations no longer have an impact.
JOURNAL OF RHEOLOGY
(2022)
Article
Materials Science, Multidisciplinary
M. H. Khalili, S. Brisard, M. Bornert, P. Aimedieu, J. -M. Pereira, J. -N. Roux
EXPERIMENTAL MECHANICS
(2017)
Article
Materials Science, Multidisciplinary
Noura Ouhbi, Charles Voivret, Guillaume Perrin, Jean-Noel Roux
Review
Engineering, Mechanical
Farhang Radjai, Jean-Noel Roux, Ali Daouadji
JOURNAL OF ENGINEERING MECHANICS
(2017)
Article
Engineering, Mechanical
Vinh Du Than, Saeed Khamseh, Anh Minh Tang, Jean-Michel Pereira, Francois Chevoir, Jean-Noel Roux
JOURNAL OF ENGINEERING MECHANICS
(2017)
Article
Materials Science, Multidisciplinary
Noura Ouhbi, Charles Voivret, Guillaume Perrin, Jean-Noel Roux
Review
Engineering, Mechanical
Farhang Radjai, Jean-Noel Roux, Ali Daouadji
JOURNAL OF ENGINEERING MECHANICS
(2017)
Article
Engineering, Mechanical
Vinh Du Than, Saeed Khamseh, Anh Minh Tang, Jean-Michel Pereira, Francois Chevoir, Jean-Noel Roux
JOURNAL OF ENGINEERING MECHANICS
(2017)
Article
Chemistry, Physical
Emilien Azema, Farhang Radjai, Jean-Noel Roux
EUROPEAN PHYSICAL JOURNAL E
(2018)
Article
Mechanics
Alexandros Theocharis, Jean-Noel Roux, Vincent Langlois
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2020)
Article
Construction & Building Technology
L. Coulon, G. Koval, C. Chazallon, J-N Roux
Summary: A new analytical model is developed to reproduce the complex modulus of asphalt concrete in cyclic dynamic tests, using two elements with variable parameters and calibrated with experimental data.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Article
Mechanics
Ahmad Awdi, Camille Chateau, Francois Chevoir, Jean-Noel Roux, Abdoulaye Fall
Summary: The study investigates nonlinear behavior in large amplitude oscillatory shear of unsaturated wet granular materials and explores how the material properties depend on both strain amplitude and frequency of deformation. The results show that the energy dissipated per unit volume in a single cycle of shear is influenced by factors such as viscosity, reduced pressure, and frequency. By introducing certain numerical parameters, the influence of surface tension, viscosity, and driving frequency on the dissipated energy can be represented effectively.
JOURNAL OF RHEOLOGY
(2023)
Article
Physics, Fluids & Plasmas
Mohamed Hassan Khalili, Jean-Noel Roux, Jean-Michel Pereira, Sebastien Brisard, Michel Bornert
Article
Physics, Fluids & Plasmas
Mohamed Hassan Khalili, Jean-Noel Roux, Jean-Michel Pereira, Sebastien Brisard, Michel Bornert
Proceedings Paper
Engineering, Geological
Vinh-Du Than, Jean-Noel Roux, Anh-Minh Tang, Jean -Michel Pereira
3RD EUROPEAN CONFERENCE ON UNSATURATED SOILS - E-UNSAT 2016
(2016)
Proceedings Paper
Engineering, Geological
Vinh-Du Than, Patrick Aimedieu, Jean-Michel Pereira, Jean-Noel Roux, Michel Bornert, Anh-Minh Tang
3RD EUROPEAN CONFERENCE ON UNSATURATED SOILS - E-UNSAT 2016
(2016)