Adaptive lattice discrete particle model for concrete

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

Adaptive lattice discrete particle model for concrete

Original language description

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.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GA23-04971S" target="_blank" >GA23-04971S: Prediction of mechanical behaviour of structures 3D printed based on alloy of titanium with betastructure</a><br>

Continuities

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

Publication year

2025

Confidentiality

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

Name of the periodical

Computers and Structures

ISSN

0045-7949

e-ISSN

1879-2243

Volume of the periodical

317

Issue of the periodical within the volume

107925

Country of publishing house

GB - UNITED KINGDOM

Number of pages

19

Pages from-to

1-19

UT code for WoS article

001586020100001

EID of the result in the Scopus database

2-s2.0-105013358632