Diaphragm-based earth pressure cells (EPCs) are commonly used to measure earth pressure within the soil or on a structural boundary. The EPCs measure the pressure indirectly by determining the change in the magnitude of diaphragm deflection. However, the diaphragm deflection alters the stress state in the soil due to arching, causing discrepancies between the measured and the actual pressures. Pressure measurements using EPCs are influenced by multiple factors, making it challenging to quantify the effects of arching separately through laboratory tests. Hence, the present study utilizes numerical modeling to investigate and quantify arching for boundary-type diaphragm EPCs with different cohesionless materials. The diaphragm is modeled as a thin plate element. A nondestructive methodology is proposed to determine the diaphragm thickness indirectly by performing simple laboratory tests and using the thin plate theory. Arching is quantified by calculating the change in vertical pressure with and without using EPCs. The results indicate that the arching magnitude increases with an increase in sand stiffness, while the EPC–sand interface effect is insignificant for a given EPC. The trapdoor experiment is commonly used to quantify arching; therefore, the numerical results are validated against existing literature on trapdoor experiments. For the EPCs and sands considered in the present study, the EPC can record pressure 10%–25% less than the actual pressure due to arching. Design charts are given to determine the arching magnitude from EPC and sand properties.

Numerical investigation on the hydrodynamics and wake characteristics of ducted and bare tidal turbines under wave conditions

Experimental and numerical investigations on diffusion flame structures of cracked fuels

Flexural responses of UHPC wet joints in steel-UHPC composite bridges: Insights from analytical and numerical investigations

Numerical investigation on a Novel Tied Braced Frame (TBF) system with steel infill shear panel upgrade

Numerical investigation on thermal performance enhancement of ammonia/hydrogen-powered multi-channel micro-combustor partially filled with porous media

Numerical investigation on the laser impact welding process with dissimilar metallic joints

Numerical investigations into hydrothermal performance of compound porous-solid ribbed micro-channels

Experimental and numerical investigation on seismic performance enhancement of free-spanning submarine pipelines equipped with casing-pipe type TMD

Experimental and numerical investigation on PCM-integrated roofs for enhancing energy efficiency in large-span buildings

Numerical investigation: Undrained capacity of a hybrid anchor under VHMT combined loading in clay

A numerical investigation on the interaction of a thunderstorm downburst and an atmospheric boundary layer wind

Numerical investigation on flow and combustion characteristics of novel reflux compact combustor under different rotating speeds for gas turbine

Numerical investigation on thermal mixing characteristics with fluid of high temperature difference and Variations of flow rate at a horizontal pipeline T-junction

Numerical investigation on turbulent jet ignition and combustion processes near dilution limit in a natural gas pre-chamber spark-ignition engine

Ignition of lithium-ion battery vent gases: Combined experimental and numerical investigation

To understand the complex mechanical behaviour of Laser Powder Bed Fusion (LPBF) fabricated 316L stainless steel (LPBF-316L), its anisotropic plasticity and ductile fracture are systematically investigated under various stress states and strain rates in this study. For comparison, tensile tests are also conducted on traditionally rolled 316L stainless steel (TR-316L) samples. Based on the experimental results, the transversely isotropic Hill-48 yield criterion and a modified Johnson-Cook (J-C) plasticity model are calibrated to describe the dynamic and anisotropic plastic response. Scanning electron microscopy reveals that fracture morphology is strongly influenced by stress state, strain rate, and build orientation, with void coalescence and dimple formation indicative of ductile failure, alongside manufacturing-induced defects. Additionally, a modified Mohr-Coulomb criterion (MMC) is proposed to characterise both anisotropic fracture initiation and strain rate sensitivity. A combination of experimental and numerical approaches is employed to capture the evolution of stress and strain fields during deformation. Finally, a comparative analysis of the three-dimensional fracture envelopes of TR-316L and LPBF-316L samples is performed. It is found that LPBF-316L exhibits lower sensitivity to the average normalised Lode angle than TR-316L. This study offers critical insight into the mechanical performance of additively manufactured metallic materials and informs the development of predictive models for advanced structural applications. • Quasi-static and dynamic tensile tests are conducted for TR-316L and LPBF-316L specimens. • Plastic and fracture behaviour are assessed under various stress states and strain rates. • Hill-48 yield criterion, modified J-C model and damage evolution law are proposed. • MMC criterion is modified to describe the strain rate and orientation dependent fracture initiation. • 3D fracture envelope of TR-316L and LPBF-316L are comparatively analysed.

Numerical investigation on vibration mechanisms of harbour seal whiskers in fin wakes during acceleration and cruising

On the stability limits for moons orbiting planets: A numerical investigation

Enhancing heat transfer performance in heated corrugated channels has become a main focus of investigation because of its crucial role in an extensive range of thermal systems. In the current study, a numerical investigation is carried out to examine the influence of laminar pulsating flow and SWCNT-water nanofluids on the flow behavior and heat transfer characteristics in a heat channel with nonequilateral triangle corrugations. Two different approaches are applied for nanoparticles motion such as homogenous single-phase model (HPM) and two-phase Eulerian–Lagrangian model (ELM). Governing equations are solved using the finite volume method. The computational fluid dynamics (CFD) simulations include Reynolds number, pulsation frequency and amplitude, volume concentration of SWCNT nanoparticles within the range of 250≤ Re≤1250, 1 ≤ f ≤ 4, 0.5≤ A ≤ 1, 0% ≤φ≤ 4% respectively. According to results, it can be said that while increasing pulsation amplitude, A always yields higher mean Nusselt number, Numean and heat transfer enhancement ratio, η pulsating flow is more effective at lower pulsation frequencies, such as f=0.5 and Numean and η deteriorates with subsequent increment in f. For instance, at Re=500, the mean Nusselt number increases from Numean=13.519 to Numean=15.282 when the pulsation amplitude is changed from A=0.5 to A=0.75 at f=0.5. This corresponds to a 13.04% enhancement in Numean. But this proportion is only observed as 0.378% increment in Numean for the change in pulsation amplitude from A=0.5 to A=0.75 at Re=500 and f=2. Furthermore, it was observed that Numean increases when the nanofluid model is changed from HPM to ELM especially at higher φ. At the optimal condition (Re = 1250, f = 0.5, A = 1, φ = 4%), Numean augmented by approximately 88% with HPM and 91% with ELM compared to the steady flow case, f=0. The outcomes provide design insights for compact heat exchangers in applications such as microchannel coolers, automotive radiators, and electronic thermal management systems demonstrating that low pulsation frequencies and high pulsation amplitudes can remarkably improve heat transfer performance without changing exchanger dimensions.