International Journal of Engineering Science最新文献_第8页

Modeling shock attenuation in hydrogels via frequency-dependent acoustic drag 通过频率相关的声阻力模拟水凝胶中的冲击衰减

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-09-26 DOI: 10.1016/j.ijengsci.2024.104149

Orel Guetta , Daniel Rittel

引用次数: 0

Integral micromorphic model reproducing dispersion in 1D continuum 再现一维连续体色散的积分微观模型

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-09-16 DOI: 10.1016/j.ijengsci.2024.104147

Michal Šmejkal , Milan Jirásek , Martin Horák

{"title":"Integral micromorphic model reproducing dispersion in 1D continuum","authors":"Michal Šmejkal , Milan Jirásek , Martin Horák","doi":"10.1016/j.ijengsci.2024.104147","DOIUrl":"10.1016/j.ijengsci.2024.104147","url":null,"abstract":"<div><p>The paper develops a new integral micromorphic elastic continuum model, which can describe dispersion properties of band-gap metamaterials, i.e., metamaterials that inhibit propagation of waves in a certain frequency range. The enrichment consists in nonlocal treatment of three terms in the expression for the potential energy density of the standard micromorphic continuum. After proper calibration, such a formulation can <strong>exactly</strong> reproduce two given branches of the dispersion curve (acoustic and optical), even in cases with a band gap. The calibration process exploits Fourier images of the unknown weight functions, which are analytically deduced from the dispersion relation of the material of interest. The weight functions are then reconstructed in the spatial domain by numerical evaluation of the inverse Fourier transform. The presented approach is validated on several examples, including discrete mass–spring chains with alternating masses, for which the dispersion relation has an explicit analytical form and the optical and acoustic branches are separated by a band gap.</p></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"205 ","pages":"Article 104147"},"PeriodicalIF":5.7,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142235023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interfacial performance evolution of ceramics-in-polymer composite electrolyte in solid-state lithium metal batteries 固态锂金属电池中陶瓷聚合物复合电解质的界面性能演变

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-09-01 DOI: 10.1016/j.ijengsci.2024.104137

Ao Cheng , Linlin Sun , Nicola Menga , Wanyou Yang , Xin Zhang

{"title":"Interfacial performance evolution of ceramics-in-polymer composite electrolyte in solid-state lithium metal batteries","authors":"Ao Cheng , Linlin Sun , Nicola Menga , Wanyou Yang , Xin Zhang","doi":"10.1016/j.ijengsci.2024.104137","DOIUrl":"10.1016/j.ijengsci.2024.104137","url":null,"abstract":"<div><p>The incorporation of ceramics into polymers, forming solid composite electrolytes (SCEs) leads to enhanced electrical performance of all-solid-state lithium metal batteries. This is because the dispersed ceramics particles increase the ionic conductivity, while the polymer matrix leads to better contact performance between the electrolyte and the electrode. In this study, we present a model, based on Hybrid Elements Methods, for the time-dependent Li metal and SCE rough interface mechanics, taking into account for the oxide (ceramics) inclusions (using the Equivalent Inclusion method), and the viscoelasticity of the matrix. We study the effect of LLTO particle size, weight concentration, and spatial distribution on the interface mechanical and electrical response. Moreover, considering the viscoelastic spectrum of a real PEO matrix, under a given stack pressure, we investigate the evolution over time of the mechanical and electrical performance of the interface. The presented theoretical/numerical model might be pivotal in tailoring the development of advanced solid state batteries with superior performance; indeed, we found that conditions in the SCE mixture which optimize both the contact resistivity and the interface stability in time.</p></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"204 ","pages":"Article 104137"},"PeriodicalIF":5.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142117495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On effective surface elastic moduli for microstructured strongly anisotropic coatings 关于微结构强各向异性涂层的有效表面弹性模量

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-08-30 DOI: 10.1016/j.ijengsci.2024.104135

Victor A. Eremeyev , Giuseppe Rosi , Salah Naili

{"title":"On effective surface elastic moduli for microstructured strongly anisotropic coatings","authors":"Victor A. Eremeyev , Giuseppe Rosi , Salah Naili","doi":"10.1016/j.ijengsci.2024.104135","DOIUrl":"10.1016/j.ijengsci.2024.104135","url":null,"abstract":"<div><p>The determination of surface elastic moduli is discussed in the context of a recently proposed strongly anisotropic surface elasticity model. The aim of the model was to describe deformations of solids with thin elastic coatings associated with so-called hyperbolic metasurfaces. These metasurfaces can exhibit a quite unusual behaviour and concurrently a very promising wave propagation behaviour. In the model of strongly anisotropic surface elasticity, strain energy as a function of the first and second deformation gradients has been introduced in addition to the constitutive relations in the bulk. In order to obtain values of surface elastic moduli, we compare dispersion relations for anti-plane surface waves obtained using the two-dimensional (2D) model and three-dimensional (3D) straightforward calculations for microstructured coatings of finite thickness. We show that with derived effective surface moduli, the 2D model can correctly describe the wave propagation.</p></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"204 ","pages":"Article 104135"},"PeriodicalIF":5.7,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0020722524001198/pdfft?md5=c2416474a1bd2e434072802677d6c807&pid=1-s2.0-S0020722524001198-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142097190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fracture properties of green nano fibrous network with random and aligned fiber distribution: A hierarchical molecular dynamics and peridynamics approach 具有随机和排列纤维分布的绿色纳米纤维网的断裂特性：分层分子动力学和周动力学方法

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-08-24 DOI: 10.1016/j.ijengsci.2024.104136

Razie Izadi , Raj Das , Nicholas Fantuzzi , Patrizia Trovalusci

{"title":"Fracture properties of green nano fibrous network with random and aligned fiber distribution: A hierarchical molecular dynamics and peridynamics approach","authors":"Razie Izadi , Raj Das , Nicholas Fantuzzi , Patrizia Trovalusci","doi":"10.1016/j.ijengsci.2024.104136","DOIUrl":"10.1016/j.ijengsci.2024.104136","url":null,"abstract":"<div><p>Polylactic acid (PLA) nanofibrous networks have gained substantial interest across various engineering and scientific disciplines, such as tissue engineering, drug delivery, and filtration, due to their unique and multifunctional attributes, including biodegradability, tuneable mechanical properties, and surface functionality. However, predicting their mechanical behaviour remains challenging due to their structural complexity, multiscale features, and variability in material properties.</p><p>This study presents a hierarchical approach to investigate the fracture phenomena in both aligned and randomly oriented nanofibrous networks by integrating atomistic modelling and non-local continuum mechanics, peridynamics. At the nanoscale, all-atom molecular dynamics simulations are employed to apply tensile loads to freestanding pristine and silver-doped PLA nanofibres, where key mechanical properties such as Young's modulus, Poisson's ratio, and critical energy release rate are determined using innovative approaches. A new method is introduced to seamlessly transfer data from molecular dynamics to peridynamics by ensuring the convergence of the tensile response of a single fiber in both frameworks. This nano to micro coupling technique is then utilised to examine the Young's modulus, fracture toughness of mode I and II, and crack propagation in PLA nanofibrous networks. The proposed framework can also incorporate the effects of surface coating and fiber arrangements on the measured properties. The current research paves the way for the development of stronger and more durable eco-friendly nanofibrous networks with optimised performance.</p></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"204 ","pages":"Article 104136"},"PeriodicalIF":5.7,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0020722524001204/pdfft?md5=5a2924a0737229ad53086f87723b9ce9&pid=1-s2.0-S0020722524001204-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142048518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantum-informed simulations for mechanics of materials: DFTB+MBD framework 以量子为基础的材料力学模拟：DFTB+MBD 框架

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-08-16 DOI: 10.1016/j.ijengsci.2024.104126

Zhaoxiang Shen , Raúl I. Sosa , Stéphane P.A. Bordas , Alexandre Tkatchenko , Jakub Lengiewicz

{"title":"Quantum-informed simulations for mechanics of materials: DFTB+MBD framework","authors":"Zhaoxiang Shen , Raúl I. Sosa , Stéphane P.A. Bordas , Alexandre Tkatchenko , Jakub Lengiewicz","doi":"10.1016/j.ijengsci.2024.104126","DOIUrl":"10.1016/j.ijengsci.2024.104126","url":null,"abstract":"<div><p>The macroscopic behaviors of materials are determined by interactions that occur at multiple lengths and time scales. Depending on the application, describing, predicting, and understanding these behaviors may require models that rely on insights from atomic and electronic scales. In such cases, classical simplified approximations at those scales are insufficient, and quantum-based modeling is required. In this paper, we study how quantum effects can modify the mechanical properties of systems relevant to materials engineering. We base our study on a high-fidelity modeling framework that combines two computationally efficient models rooted in quantum first principles: Density Functional Tight Binding (DFTB) and many-body dispersion (MBD). The MBD model is applied to accurately describe non-covalent van der Waals interactions. Through various benchmark applications, we demonstrate the capabilities of this framework and the limitations of simplified modeling. We provide an open-source repository containing all codes, datasets, and examples presented in this work. This repository serves as a practical toolkit that we hope will support the development of future research in effective large-scale and multiscale modeling with quantum-mechanical fidelity.</p></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"204 ","pages":"Article 104126"},"PeriodicalIF":5.7,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0020722524001101/pdfft?md5=2101857dffb97909280e02ce601f2c8c&pid=1-s2.0-S0020722524001101-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141992768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-standard interface conditions in flexure of mixture unified gradient Nanobeams 混合物统一梯度纳米梁弯曲时的非标准界面条件

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-08-14 DOI: 10.1016/j.ijengsci.2024.104127

S. Ali Faghidian , Hossein Darban

{"title":"Non-standard interface conditions in flexure of mixture unified gradient Nanobeams","authors":"S. Ali Faghidian , Hossein Darban","doi":"10.1016/j.ijengsci.2024.104127","DOIUrl":"10.1016/j.ijengsci.2024.104127","url":null,"abstract":"<div><p>Structural schemes of applicative interests in Engineering Science frequently encounter the intricate phenomenon of discontinuity. The present study intends to address the discontinuity in the flexure of elastic nanobeam by adopting an abstract variational scheme. The mixture unified gradient theory of elasticity is invoked to realize the size-effects at the ultra-small scale. The consistent form of the interface conditions, stemming from the established stationary variational principle, is meticulously set forth. The boundary-value problem of equilibrium is properly closed and the analytical solution of the transverse displacement field of the elastic nanobeam is addressed. As an alternative approach, the eigenfunction expansion method is also utilized to scrutinize the efficacy of the presented variational formulation in tackling the flexure of elastic nanobeams with discontinuity. The flexural characteristic of mixture unified gradient beams with diverse kinematic constraints is numerically illustrated and thoroughly discussed. The anticipated nanoscopic features of the characteristic length-scale parameters are confirmed. The demonstrated numerical results can advantageously serve as a benchmark for the analysis and design of pioneering ultra-sensitive nano-sensors. The established variationally consistent size-dependent framework paves the way ahead in nanomechanics and inspires further research contributing to fracture mechanics of ultra-small scale elastic beams.</p></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"204 ","pages":"Article 104127"},"PeriodicalIF":5.7,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0020722524001113/pdfft?md5=a656c71a5c74865742beba0627bbd601&pid=1-s2.0-S0020722524001113-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141985498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A digital-twin for rapid simulation modular Direct Air Capture systems 用于快速模拟模块化直接空气捕获系统的数字孪生系统

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-08-08 DOI: 10.1016/j.ijengsci.2024.104120

T.I. Zohdi

引用次数: 0

Nanocomposites with cylindrical/rectangular/spherical/ellipsoidal reinforcements: Generalized continuum mechanics 带有圆柱形/矩形/球形/椭圆形增强体的纳米复合材料：广义连续介质力学

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-08-08 DOI: 10.1016/j.ijengsci.2024.104125

Maziar Janghorban

引用次数: 0

Multiphase thermo-hydro-mechanical coupled soil drying model with phase-exchange based on mixture coupling theory 基于混合物耦合理论的带相交换的多相热-水-机械耦合土壤干燥模型

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-08-03 DOI: 10.1016/j.ijengsci.2024.104119

Andrea Sendula , Kai Wang , Shashank B. Subramanyam , Jake Cray , Matthew Oram , Xiaohui Chen , Ana Heitor , David Harbottle , Kenny Brown

{"title":"Multiphase thermo-hydro-mechanical coupled soil drying model with phase-exchange based on mixture coupling theory","authors":"Andrea Sendula , Kai Wang , Shashank B. Subramanyam , Jake Cray , Matthew Oram , Xiaohui Chen , Ana Heitor , David Harbottle , Kenny Brown","doi":"10.1016/j.ijengsci.2024.104119","DOIUrl":"10.1016/j.ijengsci.2024.104119","url":null,"abstract":"<div><p>The drying phenomenon in soils involves complex interactions between thermal, hydrological, and mechanical effects within a multiphase system. While several researches (both mechanics and mixture theory approach) has been applied to study various thermo-hydro-mechanical (THM) coupled processes in porous media, incorporating both multiphase flow and phase change in soil drying remains limited. This work addresses this research gap by deriving new governing equations for a two-phase flow model suitable for soil drying by extending the mixture coupling approach. The derived model is implemented in COMSOL Multiphysics and validated against experimental data, demonstrating good agreement between the model predictions and the ob- served results. A sensitivity analysis is performed to investigate the impact of critical parameters on the drying process. The findings reveal that volumetric strain is most sensitive to Young’s modulus, while the saturation of liquid water is most affected by intrinsic permeability. Additionally, preliminary results for a kaolinite clay sample during the drying process are presented, extending the applicability of the derived model to specific soil types. This research provides a comprehensive framework for fully THM coupled modelling of soil drying, which can serve as a basis for future investigations.</p></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"203 ","pages":"Article 104119"},"PeriodicalIF":5.7,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0020722524001034/pdfft?md5=7b9579150cd6c77652885e8ef3a57b3f&pid=1-s2.0-S0020722524001034-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141895799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0