...Mohsen Kamali Zarch; Limin Zhang; S. Mohsen Haeri; Zhengdan Xu The flow dynamics of dry granular flows is significantly affected by a prominent feature of a granular mass known as dilatancy. Although their rheological behaviour has been characterised by way of friction and dynamic dilatancy laws...

... cycles per test). For the traditional apparatus, a clear change in soil particle size distribution and abrasive wear of the structural interface occurs after many cycles. This change results in a significant increase of the interface friction ratio, which is the main parameter used in traditional design...

..., and the use a single lightweight cable and connector, which significantly simplifies installation on site compared to electrical multi-axis sensors. 30 06 2023 04 07 2024 © 2025 Emerald Publishing Limited 2025 friction sensors soil/structure interaction In urban environments...

... an essentially ‘static’ behaviour to an accelerated displacement. A sensitivity analysis, inspired by the Selborne case, resulted in an interesting relationship between runout and soil brittleness. Rate effects on friction angle explain the creeping behaviour of landslides. Changing velocities of Vallcebre slide...

...Mark Talesnick; Shay Nachum; Sam Frydman Lateral soil pressures under at-rest conditions are commonly estimated as K₀ times vertical normal pressure, where K₀ is obtained from generally accepted empirical formulae, related to the soil's friction angle...

... in contact with one multifilament woven geotextile, one non-woven geotextile and one geomembrane. Analysis of the soil–geosynthetic data highlights mobilisation of higher peak friction angles with increases in initial relative density and angularity of sand particles and decrease in the effective normal...

... cavity expansion process and the residual friction at the soil–anchor interface is assumed to be fully developed. The shear resistance and adhesion factor just after installation are first determined by consideration of the short-term changes in total stresses and excess pore pressure around the anchor...

... friction soil/structure interaction The soil used for all tests was kaolin clay from Amberger Kaolin Werke (Germany). It consists of kaolinite mineral in the majority, with traces of mica and quartz. Its particles are slender with an average aspect ratio of 28 : 1, and 52% of its particles by mass...

... on the elasticity theory, but at lower loads the particle roughness needs to be accounted for. In shearing the coefficient of inter-particle friction is highly variable, both for a single sand and between different sands, but the average values are controlled predominantly by the surface roughness. Current...

.... The weathered tephra experiences brittle failure and exhibits higher friction than sedimentary clays. Cyclic contour diagrams, covering the whole compressional and extensional range of stress conditions, are used to compare the cyclic shear strength of Pahoia tephra with those derived for sedimentary clays...

.... In this paper, the mobilised plane is introduced and used to reveal the failure mechanism of soils. By projecting the microstructure tensor of transversely isotropic soils onto the normal of the mobilised plane, the directionality of the transversely isotropic soils is introduced into the friction rules...

...K. J. Hanley; X. Huang; C. O'Sullivan The discrete-element method was used to simulate drained triaxial compression of large-scale, polydisperse numerical samples at a range of void ratios while tracing all relevant energy components. The frictional dissipation and boundary work are almost equal...

...A. Sufian; A. R. Russell; A. J. Whittle The anisotropy associated with the contact network in granular media is investigated. A unique expression for mobilised internal friction has been discovered using numerical simulations of monodisperse and polydisperse spherical assemblies under two-way...

... μ is the coefficient of inter-particle friction. Equations (1) and (3) lead to the following expression for the contact stiffness ratio (R_K) for smooth contacts In the case of soil under isotropic loading, the relationship between the soil shear modulus at small strains...

... decrease in the internal friction angle down to that of the montmorillonite. Microstructural investigation provided an explanation of these phenomena through a mechanism activated at the scale of particles. The Greek clay is a calcium (Ca)-montmorillonite (97·7%), taken from Milos Island in the Aegean...

..., display significant randomness, which is attributed to the random location of pellets and their associated macro-voids. Nevertheless, certain trends are evident. Two key observations are made. The first is that the interface friction factor when shearing against a smooth interface can be greater than...

... 19 2 2013 © 2013 Thomas Telford Ltd 2013 earth pressure friction model test retaining walls sands soil/structure interaction Many experimental results show that the distribution of active earth pressure on a wall is non-linear, and depends on the mode of wall movement...

... resistance, expressed as a proportion of the submerged pipeline weight, can vary by an order of magnitude, depending on the rate of axial movement and cumulative time. This paper provides a theoretical framework for assessing the magnitude of axial friction. The framework is developed within a critical-state...

.... For constant friction angles the note produces scale-independent solutions that perfectly match already published results. For friction angles degrading with pressure, the note numerically quantifies and theoretically explains the scale dependence of the bearing capacity factor N_γ...

... is not straightforward. During compression the particle can rotate. Both horizontal and vertical forces are induced at the particle–platen contacts, and so there may be frictional sliding at the contact points at the same time as, or prior to, compression of the bulk particle. Asperities can yield, changing the particle...