Simulation of force chains and particle breakage of granular material
Through particle compression test, early researchers proposed the theory of correlation between particle breakage and particle size [11], studied the internal relationship between total input energy and particle breakage [12, 13], analyzed the evolution form of the particle breakage [14], and proposed the standard for measuring …
Quantifying Particle Breakage and Its Evolution Using …
Particle breakage in soils is a well-recognised behaviour. Conventional methods for quantifying the breakage process rely on calculating the area between the …
Fractal characteristics of particle breakage on the coral …
Particle breakage at coral sands–structure interface is common in marine geological environments and is critical to the stability of geotechnical structures. However, due to the knowledge gap regarding the relationship between structure roughness and coral sand particle breakage, previous studies have not provided a clear understanding of …
Is It Possible to Use Breakage Models to Predict Particle
Stress Models. The limitation of the KE model in predicting particle deformation resulted in the development of a new model. Relating milling conditions to particle breakage was modeled based on the contact area calculated using Hertz theory. 13 To directly compare the contact area model to the stress intensity, linear velocity is …
Simulation experimental investigations on particle breakage …
Semantic Scholar extracted view of "Simulation experimental investigations on particle breakage mechanism and fractal characteristics of mixed size gangue backfill materials" by Dongtao Wu et al. ... interface, resulting in the decrease of interface strength and the increase of normal displacement. Based on the theory of … Expand. 13. Save.
Simulation experimental investigations on particle breakage …
Also, the particle breakage characteristics of gangue with DPSGs under uniaxial conditions remain unclear. In this paper, a physical compression experiment of mixed size gangue is carried out by designing a scheme based on Talbot's theory and fractal theory was used to quantify the breakage degree of mixed size gangue …
Simulation experimental investigations on particle breakage …
Download Citation | Simulation experimental investigations on particle breakage mechanism and fractal characteristics of mixed size gangue backfill materials | The compression deformation and ...
Processes | Free Full-Text | Research on the Particle Breakage …
During the operation of a high-speed shear wet granulator, the rotation of the granulation components leads to the emergence of the phenomenon of particle breakage, which results in changes in particle size. To simulate the breakage process of pharmaceutical powder particle agglomerates in a granulator, a Hertz–Mindlin with …
Particle breakage in construction materials: A geotechnical …
Particle breakage is the phenomena of fragmentation process that particles undergo due to applied load and thus resulting in stresses inside the soil matrix [4]. …
Analytical analysis of cylindrical cavity expansion considering
The particle breakage effect in sand exerts a significant influence on the design of underground space structure. However, the existing theories seldom consider the breakage effect and often lack accurate descriptions of void ratio changes, leading to substantial errors in the numerical calculations compared to the actual scenario.
Particle breakage in granular soils: a review
A number of constitutive models of granular soils incorporating particle breakage were proposed by the elastoplastic theory, the bounding surface theory, the disturb state concept theory, the ...
Theory of shear strength of granular materials based on particle breakage
Download Citation | Theory of shear strength of granular materials based on particle breakage | Great efforts have been made to determine the shear strength of coarse granular materials using both ...
A crack theory-based bonded-particle model for rock …
Particle breakage shows significant effect on the macroscopic behaviour of rock materials, and the discrete element method is a powerful tool to investigate the relationship between micro fracture and
The improved model of inter-particle breakage considering …
The effect of particle shape transformation on the crushing results and the size effect of the breakage process caused by the particle size are considered, and the influence of parameters of inter-particle breakage model on the crushing product is studied by the inter-particle breakage experiment using the cubic and flaky particles with ...
Discrete element method simulation of granular materials …
The original DEM developed by Cundall et al. [69] did not account for particle breakage, prompting the development of various solutions to overcome this constraint. …
A stress dilatancy relationship for coarse-grained soils …
The energy consumption of particle breakage is added to the Cambridge energy balance equation so that the energy balance equation for coarse-grained soil is obtained. To reasonably measure the energy consumption of particle breakage, a function of friction coefficient relating to the axial strain is proposed to replace the friction …
An elastoplastic constitutive model for frozen saline coarse …
The particle crushing was emphasized by the theory of breakage mechanics, while dilation was interpreted through its negative contribution to the overall positive rate of dissipation. With only five parameters to be determined, the proposed model connected the constitutive behavior to index properties which relate to minimum and maximum densities.
An improved breakage model with a fast-cutting method for …
The size distribution of progeny particles is determined by "t 10 theory" proposed by Tavares et al. [26]. t 10 is a key parameter to determine the fineness of the progeny particles, which corresponds to the weight percentage of the particle passing the sieve with an aperture of 10% of the original particle size, expressed by [38], (9) t 10 = …
Particle breakage of granular materials during sample preparation
Particle breakage is commonly observed in granular materials when subjected to external loads. It was found that particle breakage would occur during both sample preparation and loading stages. ... Breakage mechanics – Part I: Theory. Journal of the Mechanics and Physics of Solids, 55 (6) (2007), pp. 1274-1297. View PDF View …
Experimental Investigation on Particle Breakage …
There is often obvious particle breakage for silica sand under high-stress, which will lead to the bearing capacity reduction and excessive settlement of the foundation. This paper focuses on the …
Breakage mechanics—Part I: Theory | Request PDF
According to the ultimate gradation theory [11], the particle breakage increases with the increasing p, but it will eventually tend to a fixed value. Therefore, the gradient of B r * (p/p a ) n ...
New Approach for Predicting Particle Breakage of Granular …
Based on discussion of the problems in the research, it is pointed out that further research should focus on the following: application of the fractal theory to measurement of particle breakage ...
Particle breakage in granular materials — a conceptual …
A simple, yet complete framework is introduced with the aim of modelling grain breakage in soils and crushable granular materials. The evolution of grain …
New Approach for Predicting Particle Breakage of Granular …
The demarcation lines, where the mass percentage of newly generated PSFs started to decline, were calculated and verified. The process of change in fractal dimensions and relative breakage with W was divided into four stages: intense breakage, fast breakage, slow breakage, and creep breakage. Each stage was analyzed to …
Particle breakage in granular soils: a review
In the fundamentals of particle breakage, the crushability of granular soil is mainly related to the physical nature and mechanical properties of soil, the stress-strain …
Mechanism of the Breakage of Spherical Gypsum Particles …
To verify the theory, particle contact tests of gypsum spheres under three-point contact conditions were carried out. The experimental results are consistent with the theoretical prediction. Different from the ball–ball contact test, the rupture surface after breakage is a fixed plane passing through all three contact points under three-point ...
A state-dependent hyperelastic-plastic constitutive …
Keywords Back-stress ratio Crushable granular soils Elastoplasticity theory Elastic–plastic coupling Hyperelasticity Particle breakage 1 Introduction Particle breakage plays a profound role in granular soils behavior [21, 35, 46, 87, 114, 127] which occurs under both high effective stress levels caused by construction of
Simulation of force chains and particle breakage of …
Through particle compression test, early researchers proposed the theory of correlation between particle breakage and particle size [11], studied the internal relationship between total input energy and particle breakage [12,13], analyzed the evolution form of the particle breakage [14], and proposed the standard for measuring …
Particle fragmentation based on strain energy field
In conclusion, our particle breakage theory unifies the breakage criterion, shape of the new fragments, and the sub-particle stress field under one theoretical frame. It avoids the use of empirical parameters and the problems caused by oversimplification with averaged stress tensor. Therefore, the framework is expected to make a good ...
Particle breakage of calcareous sand at high strain rates
Semantic Scholar extracted view of "Particle breakage of calcareous sand at high strain rates" by Yaru Lv et al. ... Critical Dynamic Stress and Cumulative Plastic Deformation of Calcareous Sand Filler Based on Shakedown Theory. Kangyu Wang Zhenhuan Chen Zhe Wang Qianshen Chen Di Ma. Environmental Science, Engineering.