Characterization of Force Distribution and Force Chain Topology in Asphalt Mixtures Using the Discrete Element Method DOI Open Access
Sudi Wang, Jianxia Wang, Jie Wang

и другие.

Materials, Год журнала: 2025, Номер 18(10), С. 2347 - 2347

Опубликована: Май 18, 2025

The force chain network within asphalt mixtures serves as the primary load-bearing structure to resist external forces. objective of this study is quantitatively characterize contact distribution and topology structure. discrete element method (DEM) was employed construct simulation models for two stone matrix (SMA) open-graded friction course (OGFC) mixtures. Load characteristics, including average force, load bearing contribution angle, topological parameters, clustering coefficient, edge betweenness path length, were analyzed elucidate transfer mechanisms. findings present demonstrate that between aggregate–aggregate types in specific particle sizes significantly exceeds same size aggregates. For SMA16 OGFC16 mixtures, aggregates initially increases then decreases with decreasing size, peaking at 13.2 mm. SMA13 OGFC13 a consistent decline aggregate size. analysis mixture reveals SMA exhibited higher coefficients features comparison OGFC It indicates gradations have superior skeletal structures. While maximum nominal minimally influences length relative change rate 3%, gradation type exerts more substantial impact, exhibiting 7% 9%. These confirm stable structures than proposed parameters effectively capture structural distinctions networks, offering insights optimizing design enhancing mechanical performance.

Язык: Английский

Characterization of Force Distribution and Force Chain Topology in Asphalt Mixtures Using the Discrete Element Method DOI Open Access
Sudi Wang, Jianxia Wang, Jie Wang

и другие.

Materials, Год журнала: 2025, Номер 18(10), С. 2347 - 2347

Опубликована: Май 18, 2025

The force chain network within asphalt mixtures serves as the primary load-bearing structure to resist external forces. objective of this study is quantitatively characterize contact distribution and topology structure. discrete element method (DEM) was employed construct simulation models for two stone matrix (SMA) open-graded friction course (OGFC) mixtures. Load characteristics, including average force, load bearing contribution angle, topological parameters, clustering coefficient, edge betweenness path length, were analyzed elucidate transfer mechanisms. findings present demonstrate that between aggregate–aggregate types in specific particle sizes significantly exceeds same size aggregates. For SMA16 OGFC16 mixtures, aggregates initially increases then decreases with decreasing size, peaking at 13.2 mm. SMA13 OGFC13 a consistent decline aggregate size. analysis mixture reveals SMA exhibited higher coefficients features comparison OGFC It indicates gradations have superior skeletal structures. While maximum nominal minimally influences length relative change rate 3%, gradation type exerts more substantial impact, exhibiting 7% 9%. These confirm stable structures than proposed parameters effectively capture structural distinctions networks, offering insights optimizing design enhancing mechanical performance.

Язык: Английский

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