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http://dx.doi.org/10.7734/COSEIK.2020.33.3.187

Structural Analysis of the Deck of a Dump Truck Based on Bulk Material Behavior using the Discrete Element Method  

Ryu, Seung Hun (Automotive R&D Division, Hyundai Motor Group)
Woo, Ho Kil (Division of Mechanical Engineering, ChungNam Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.33, no.3, 2020 , pp. 187-192 More about this Journal
Abstract
To reduce fuel consumption by reducing the weight of the deck of a dump truck and to design an eco-friendly deck, accurate structural analysis is required. To date, the load on the deck has been calculated based on the hydrostatic pressure or by applying the earth pressure theory. However, these methods cannot be used to determine the non-uniformity of the load on the deck. Load distribution varies depending on the size distribution and interaction of aggregate particles. Compared with the finite element method, the discrete element method can simulate the behavior of aggregate particles more effectively. In this study, major properties were obtained by measuring bulk density and repose. The deck of a 15 ton dump truck was simulated using the obtained properties and bumping, breaking, and turning load conditions were applied. EDEM, which is a discrete element analysis software, was employed. The stress and strain distribution of the deck were calculated by NASTRAN and compared with the measured values. The study revealed that the results derived from a DEM simulation were more accurate than those based on mathematical assumption.
Keywords
discrete element method; bulk material; structural analysis; dump truck;
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