A coupled MPM-DEM method for modelling soil-rock mixtures

Li, Jianguo; Bin, Wang; Wang, Di; Zhang, Pei

doi:10.1016/j.compgeo.2023.105508

Cited by 16 publications

(1 citation statement)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The DEM, originally developed by Cundall to address rock mechanics [6], has been extensively applied across various fields. The DEM application spans from analysing road materials in highway engineering [7,8], to investigating soil interaction mechanics [9][10][11], to constructing simplified models for trucks on roads with discrete pebble surfaces [12,13]. This diverse application spectrum not only demonstrates the DEM's versatility but also significantly underscores its efficacy in assessing the load-bearing capacities of pebble aggregates.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Load-Bearing Capacity of Pebble Aggregates

Liu,

Bai,

Liu

2024

Applied Sciences

View full text Add to dashboard Cite

The load-bearing capacity of pebble aggregates plays a pivotal role in influencing the operational performance of uncontrolled trucks on arrester beds. The complexity of this phenomenon stems from the nonuniformity in the shapes of the pebbles and their stochastic arrangement within the beds, presenting notable challenges for traditional mathematical modelling techniques in precisely evaluating the contact dynamics of these aggregates. This study leverages the discrete element method (DEM) to extensively analyse the arrester bed aggregate of a standard truck escape ramp. The aforementioned mechanism entails the gathering of morphological parameters of irregularly shaped aggregate particles and introduces a novel method for constructing random shapes that adhere to the observed distribution characteristics. A discrete element model, grounded in the physical properties of these aggregates, is formulated. This study focuses on the aggregate’s load-bearing capabilities, scrutinising the mechanical behaviour of the aggregate particles at the macroscopic and microscopic scales. These insights offer substantial scientific contributions and practical implications for assessing the safety of escape ramps and determining essential parameters for the brake bed design.

show abstract