Results 91 to 100 of about 338,480 (190)

Calculations of effective material tensors andthe electromechanical coupling coefficient of a type 1-3 composite transducer

Archives of Acoustics, 2014
In this paper the purpose and manner of conducting the process of asymptotic homogenization of a type 1-3 composite structure are presented. The formulation of the homogenization process is reduced to numerical static analysis of an elementary symmetry ...
K. KYCIA, A. NOWICKI, O. GAJL, T.D. HIEN
doaj  

Unravelling Size‐Dependent and Coupled Properties in Mechanical Metamaterials: A Couple‐Stress Theory Perspective

Advanced Science
The lack of material characteristic length scale prevents classical continuum theory (CCT) from recognizing size effect. Additionally, the even‐order material property tensors associated with CCT only characterize the materials' centrosymmetric behavior ...
Shahin Eskandari, Benyamin shahryari, Abdolhamid Akbarzadeh   +2 more
doaj   +1 more source

Siliceous sponges or seawater as a silicon source? Tracing silicon burial pathways of the Upper Cretaceous opal‐CT deposits using δ30Si and δ7Li

Sedimentology, EarlyView.
ABSTRACT Classical models of formation of sedimentary siliceous rocks (flint, chert, opoka) commonly assume that the Cretaceous marine silicon (Si) cycle was primarily biologically controlled, broadly analogous to the modern ocean. In this framework, siliceous sponges are regarded as the principal source of dissolved silica (dSi) to sediment porewaters,
Agata Jurkowska, Ewa Świerczewska‐Gładysz, Marek Szczerba, Tomáš Magna, Szymon Kowalik Filipowicz   +4 more
wiley   +1 more source

Derivation of a macroscopic model for transport of strongly sorbed solutes in the soil using homogenization theory [PDF]

, 2010
In this paper we derive a model for the diffusion of strongly sorbed solutes in soil taking into account diffusion within both the soil fluid phase and the soil particles.
Ptashnyk, Mariya, Ptashnyk, Mariya; id_orcid, Roose, Tiina   +2 more
core   +1 more source

Multiscale Analysis and Size Effect Discussion Investigation for the Armor Layer of Flexible Risers Based on NIAH Method

Journal of Marine Science and Engineering
The armor layer is one of the core components of flexible risers. It provides essential mechanical properties such as tensile strength, pressure resistance, and torsional performance, which are necessary for operation in complex marine environments ...
Miaoer Liu, Endao Li, Fangqiu Li, Jun Yan, Hailong Lu   +4 more
doaj   +1 more source

A Computational Framework for Myelin as a Regulator of Temporal Integration, Neuronal Excitability, and Synaptic Plasticity

Glia, Volume 74, Issue 12, December 2026.
Computational models illustrate how myelinating glia may shape the temporal integration of spikes upon a common postsynaptic target. Models show consequences for synaptic plasticity, neuronal excitability, and the fidelity of neural signals. ABSTRACT Myelin regulates neural signaling not only by enabling fast conduction but also by dynamically tuning ...
Daniel O'Sullivan, Aref Pariz, Daniel Trotter, Noor Z. Al Dahhan, Juliet K. Knowles, Paul W. Frankland, Donald Mabbott, Jérémie Lefebvre   +7 more
wiley   +1 more source

Study of Liquid Flow Through a Channel With Adjacent Porous Domains of Different Material Properties

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT A common subject in engineering disciplines is the study of flow in and around fractures or channels with adjacent porous domains. In this work, a unified approach based on the Theory of Porous Media (TPM) with an embedded Phase‐Field (PF) fracture model is used to investigate a flow scenario, where a channel separates two porous domains with ...
Yann Rivas, Abishek Masilamani Arumugam, Nikolaos Karadimitriou, Holger Steeb, Wolfgang Ehlers, Arndt Wagner   +5 more
wiley   +1 more source

Homogenization of some evolution problems in domains with small holes

Electronic Journal of Differential Equations, 2016
This article concerns the asymptotic behavior of the wave and heat equations in periodically perforated domains with small holes and Dirichlet conditions on the boundary of the holes.
Bituin Cabarrubias, Patrizia Donato
doaj  

Effective elastic properties of the grid structure based on asymptotic homogenization method

AIP Advances
This study develops a computational framework integrating the asymptotic homogenization method (AHM) for periodic microstructures and classical plate theory to predict the equivalent stiffness parameters of honeycomb grid sandwich plates. By constructing
Tao Gao, Bo Liang, Hang Zhang, Song Chen, Xinliang Zhang   +4 more
doaj   +1 more source

Effective Crack Resistance of a Simplified Ductile Heterogeneous Material With Circular Inclusions

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT This contribution investigates the effective crack resistance obtained from a numerical crack‐growth experiment for a simplified two‐dimensional ductile heterogeneous material. The resolved microstructure contains circular inclusions. Their stiffness and fracture resistance are varied independently together with the ligament width between ...
Alexander Schlüter, Ronjit Medda, Ralf Müller   +2 more
wiley   +1 more source