Three-Dimensional Finite Element Modeling of Haul Road Response to Ultra-Large Dump Truck Dynamic Loading

Kansake, Bruno Ayaga; Frimpong, Samuel; Nyaaba, Wedam; Ateng, Irene Akalanyaba

doi:10.1007/s42461-022-00725-7

Cited by 2 publications

(1 citation statement)

References 36 publications

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“…This analytical approach enables accurate predictions of the dynamic and kinematic behaviour of the investigated entity under varied stress and strain conditions. The application of DEMs extends broadly within the field of highway engineering [27], including the analysis of pavement materials [28][29][30], tyre-soil contact mechanics [31][32][33] and the simulation of trucks travelling on discrete pebble aggregate surfaces [34,35]. Therefore, DEM provides an effective approach for modelling and analysing the load-bearing properties of aggregates with irregular shapes.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Influence of Varied Particle Sizes on the Load-Bearing Properties of Arrester Bed Aggregates

Liu,

Bai

2024

Materials

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This study employs the discrete element method to investigate the influence of particle size on the load-bearing characteristics of aggregates, with a specific emphasis on the aggregates used in escape ramp arrester beds. This study utilises the log edge detection algorithm to introduce an innovative approach for modelling irregularly shaped pebbles, integrating their physical properties into a comprehensive discrete element model to enhance the accuracy and applicability of simulations involving such pebbles. Meticulous validation and parameter calibration (friction coefficient: 0.37, maximum RMSE: 3.43) confirm the accuracy of the simulations and facilitate an in-depth examination of the mechanical interactions between aggregate particles at macroscopic and microscopic scales. The findings reveal a significant relationship between the particle size and load-bearing capacity of aggregates. Smaller pebbles, which are more flexible under pressure, can be packed more densely, thereby improving the distribution of vertical forces and increasing the concentration of local stress. This enhancement substantially increases the overall load-bearing capacity of aggregates. These discoveries hold significant implications for engineering practices, particularly in the optimisation of safety for truck escape ramps and in identifying the ideal sizes of pebbles with irregular shapes.

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