Adaptive lattice discrete particle model for concrete

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00386822" target="_blank" >RIV/68407700:21110/25:00386822 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.compstruc.2025.107925" target="_blank" >https://doi.org/10.1016/j.compstruc.2025.107925</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.compstruc.2025.107925" target="_blank" >10.1016/j.compstruc.2025.107925</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Adaptive lattice discrete particle model for concrete

Popis výsledku v původním jazyce

Simulating the quasi-static mechanical behavior of concrete at the meso-scale quickly becomes prohibitive due to the high computational cost associated with reproducing the actual meso-structure governed by the coarse aggregate distribution in the concrete domain. This manuscript explores a novel adaptive interaction scheme for the Lattice Discrete Particle Model (LDPM) to address this challenge. Unlike the original LDPM for concrete, which utilizes 12-facet interactions per four-particle tetrahedron irrespective of the stress state, the proposed adaptive framework initially employs a simplified formulation with a single facet per edge, thus reducing costs substantially. Only after exceeding a given stress limit does the discretization locally return to a refined 12-facet or 6-facet interaction scheme. The capabilities of this adaptive scheme are evaluated through simulating unconfined compression and three-point bending tests, examining various adaptive schemes and stress criteria. Additionally, the known limitations of the edge-based interaction scheme in cases of unconfined compression are investigated and an improved stress criterion in terms of the shear/normal stress ratio is formulated. Mechanical behavior and computational costs associated with the adaptive scheme are systematically analyzed. The results indicate that appropriately combining edge-based interactions with either 12-facet or 6-facet interactions can achieve a 69.7 % reduction in computational costs while maintaining structural response fidelity comparable to the original LDPM. This research establishes a strong foundation for extending LDPM applications to larger-scale structural applications by offering a pathway to more efficient and scalable simulations.

Název v anglickém jazyce

Adaptive lattice discrete particle model for concrete

Popis výsledku anglicky

Simulating the quasi-static mechanical behavior of concrete at the meso-scale quickly becomes prohibitive due to the high computational cost associated with reproducing the actual meso-structure governed by the coarse aggregate distribution in the concrete domain. This manuscript explores a novel adaptive interaction scheme for the Lattice Discrete Particle Model (LDPM) to address this challenge. Unlike the original LDPM for concrete, which utilizes 12-facet interactions per four-particle tetrahedron irrespective of the stress state, the proposed adaptive framework initially employs a simplified formulation with a single facet per edge, thus reducing costs substantially. Only after exceeding a given stress limit does the discretization locally return to a refined 12-facet or 6-facet interaction scheme. The capabilities of this adaptive scheme are evaluated through simulating unconfined compression and three-point bending tests, examining various adaptive schemes and stress criteria. Additionally, the known limitations of the edge-based interaction scheme in cases of unconfined compression are investigated and an improved stress criterion in terms of the shear/normal stress ratio is formulated. Mechanical behavior and computational costs associated with the adaptive scheme are systematically analyzed. The results indicate that appropriately combining edge-based interactions with either 12-facet or 6-facet interactions can achieve a 69.7 % reduction in computational costs while maintaining structural response fidelity comparable to the original LDPM. This research establishes a strong foundation for extending LDPM applications to larger-scale structural applications by offering a pathway to more efficient and scalable simulations.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA23-04971S" target="_blank" >GA23-04971S: Predikce mechanického chování struktur tvořených 3D tiskem slitiny titanu s betastrukturou</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Computers and Structures

ISSN

0045-7949

e-ISSN

1879-2243

Svazek periodika

317

Číslo periodika v rámci svazku

107925

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

19

Strana od-do

1-19

Kód UT WoS článku

001586020100001

EID výsledku v databázi Scopus

2-s2.0-105013358632