International Journal of Engineering Science最新文献_第6页

Asymptotically exact theory of functionally graded elastic beams 功能梯度弹性梁的渐近精确理论

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-02-03 DOI: 10.1016/j.ijengsci.2025.104214

K.C. Le , T.M. Tran

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Wave propagation characteristics of quasi-3D graphene origami-enabled auxetic metamaterial plates 准三维石墨烯折纸辅助超材料板的波传播特性

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-02-01 DOI: 10.1016/j.ijengsci.2024.104185

Behrouz Karami, Mergen H. Ghayesh

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Prediction of the effective properties of matrix composites via micromechanics-based machine learning 基于微力学的机器学习预测基体复合材料的有效性能

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-02-01 DOI: 10.1016/j.ijengsci.2024.104184

E. Polyzos

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Optimising parameters of bone-adaptation model using experimental data 利用实验数据优化骨适应模型参数

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-01-30 DOI: 10.1016/j.ijengsci.2024.104209

Ekaterina Smotrova-Kayali, Simin Li, Vadim V. Silberschmidt

{"title":"Optimising parameters of bone-adaptation model using experimental data","authors":"Ekaterina Smotrova-Kayali, Simin Li, Vadim V. Silberschmidt","doi":"10.1016/j.ijengsci.2024.104209","DOIUrl":"10.1016/j.ijengsci.2024.104209","url":null,"abstract":"<div><div>Trabecular bone is a living material that adapts its spatial organisation and mechanical properties when subjected to loading. There were efforts to describe adaptation in trabecular bone with mathematical models regulating resorption and formation activities as a function of mechanical stimuli. In this paper, an approach to optimise parameters of a bone-adaptation model is proposed and investigated, and the simulation results of trabecular-bone adaptation are quantitatively compared with high-resolution peripheral quantitative computed tomography (HR-pQCT) scans of a distal tibia in a participant following six months of physiological loading. For this purpose, finite-element models were developed from baseline scans of the participant's trabecular bone and used as an initial domain to run simulations regulated by the bone-adaptation model implemented in a Fortran subroutine. The simulated results were element-by-element compared with the corresponding models from follow-up HR-pQCT scans. Mechanostat parameters of the bone-adaptation model were optimised to improve correspondence between the simulated and follow-up HR-pQCT-based models.</div><div>The developed approach captured the main trends in changes of bone volume fraction, trabecular thickness and separation and achieved 84 – 93 % of the element-by-element correspondence with the experimental models when utilising the optimised values of bone-adaptation parameters. These optimised values were different across the bone's cross-section. In the boundary conditions representing physiological loading, they predicted higher bone resorption rate in the inner regions of distal tibia than in the outer regions, intensified bone resorption in the anterior-inner, medial-inner and medial-outer regions, higher bone formation rate in the outer regions of distal tibia than in the inner regions, and intensified bone formation in the lateral-outer region.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"209 ","pages":"Article 104209"},"PeriodicalIF":5.7,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133825","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}

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Modelling of flat pre-strain driven structures, folding to desired surface and application to 3D-printing on textiles 平面预应变驱动结构的建模，折叠到所需的表面，并应用于纺织品上的3d打印

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-01-08 DOI: 10.1016/j.ijengsci.2024.104201

Julia Orlik , David Neusius , Amartya Chakrabortty , Sebastian Backes , Thomas Gries , Konrad Steiner

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Predictions of local stress heterogeneities within fibre-reinforced laminated plates 纤维增强层合板内局部应力非均质性的预测

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-12-25 DOI: 10.1016/j.ijengsci.2024.104199

Xue Zhao , Zhengcheng Zhou , Yichao Zhu

{"title":"Predictions of local stress heterogeneities within fibre-reinforced laminated plates","authors":"Xue Zhao , Zhengcheng Zhou , Yichao Zhu","doi":"10.1016/j.ijengsci.2024.104199","DOIUrl":"10.1016/j.ijengsci.2024.104199","url":null,"abstract":"<div><div>Most plate models in use are hypothesis-based, which struggle to resolve the internal stress distribution resulted from plate microstructural heterogeneities, making the strength prediction of such plates still a challenging issue nowadays. To this end, exemplified by fibre-reinforced laminates, the asymptotic behaviour of three-dimensional full-resolution models of microstructural plates is studied. Without containing any phenomenological parameters but merely the information about the isotropic constituting materials and the microstructural geometry, the derived (leading-order) asymptotic plate model is able, not only to reproduce the quantities indexing the homogenised properties of a microstructural plate, such as its stiffness coefficients and vibration modes, but also to predict the locally heterogeneous stress distribution. For fibre-reinforced laminates, the internal stress distribution can be calculated in a semi-analytical manner, and the relative error in stress prediction is shown to be lower than 8.5% for an arbitrarily oriented laminate bearing a slenderness of 0.08. The predictability of the introduced asymptotic plate model is also demonstrated over methods based on the concept of representative volume.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"208 ","pages":"Article 104199"},"PeriodicalIF":5.7,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142901782","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}

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Nonlinear elastic metafoundation as a model for adhesive micropatterned elastic interfaces 粘接微图案化弹性界面的非线性弹性元基础模型

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-12-25 DOI: 10.1016/j.ijengsci.2024.104211

Ivan Argatov

{"title":"Nonlinear elastic metafoundation as a model for adhesive micropatterned elastic interfaces","authors":"Ivan Argatov","doi":"10.1016/j.ijengsci.2024.104211","DOIUrl":"10.1016/j.ijengsci.2024.104211","url":null,"abstract":"<div><div>A hierarchical asymptotic modeling approach is applied to solve unilateral contact problems for vibroadhesive micropatterned elastic interfaces. The deformation model for individual micropillars accounts for contributions from both local (Hertzian contact) and global (elastic rod with variable cross-section) deformations. The deformation model of substrate (elastic half-space), on top of which the micropatterned interface is attached, is constructed using the Kachanov method for describing the elastic interaction between the pillar bases. The generalized JKR-type rate-dependent adhesion is assumed for characterizing the contact interface between the micropillars and a rigid punch (external indenting body), which is taken to be spherical in the considered specific cases. In the spirit of the metamaterials paradigm, each elastic micropillar is equipped with a rigid inertial inclusion to enhance vibroadhesion in a resonance range of excitation frequencies. Simple analytical approximations for the total pull-off force are obtained by means of a homogenization method. The influence of substrate (or backing-layer interaction) on the adhesive strength is described in detail in the case of flat-ended pillars. It was shown that the effect of rate-dependent adhesion, which is characterized by the Gent–Schultz power law, reveals itself in gradual stiffening the contact with excitation frequency increasing towards the resonance, which implies the so-called stiffening behavior of the amplitude–frequency characteristic for an individual composite micropillar.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"208 ","pages":"Article 104211"},"PeriodicalIF":5.7,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142901781","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

Exploring the impact of thermal fluctuations on continuous models of adhesion 探讨热波动对连续黏附模型的影响

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-12-24 DOI: 10.1016/j.ijengsci.2024.104194

Claudia Binetti , Andrea Cannizzo , Giuseppe Florio , Nicola M. Pugno , Giuseppe Puglisi , Stefano Giordano

{"title":"Exploring the impact of thermal fluctuations on continuous models of adhesion","authors":"Claudia Binetti , Andrea Cannizzo , Giuseppe Florio , Nicola M. Pugno , Giuseppe Puglisi , Stefano Giordano","doi":"10.1016/j.ijengsci.2024.104194","DOIUrl":"10.1016/j.ijengsci.2024.104194","url":null,"abstract":"<div><div>Adhesion and deadhesion processes at the interface between an object and a substrate are well-established phenomena in the realm of materials science and biophysics. These processes can be profoundly influenced by thermal fluctuations, a phenomenon empirically validated through numerous experimental observations. While discrete models have traditionally served as a foundation for understanding this intricate interplay, this paper seeks to bridge the gap between such discrete representations and the continuous models that more accurately reflect experimental scenarios. To achieve this objective, we initially adopt discrete models comprising <span><math><mi>n</mi></math></span> elements, selected such that their physical parameters converge towards the continuum limit as <span><math><mi>n</mi></math></span> approaches infinity. This thoughtful scaling ensures that the discrete system retains its relevance in the context of continuous media. Leveraging principles from Statistical Mechanics and Griffith-type total energy minimization approaches, we employ this scaled discrete model to investigate the impact of temperature in continuous adhesion phenomena. As a result, we obtain an analytical model to account for the decrease of the decohesion threshold depending on thermal (entropic) energy terms. Interestingly, our approach demonstrates that continuous adhesion models invariably exhibit phase transitions, whose critical temperatures can be derived through closed-form calculations. By elucidating these critical temperature values, this work enhances our understanding of adhesion processes within continuous media and opens new avenues for the exploration of adhesion-related phenomena in diverse scientific disciplines. Finally, the comparison with some experimental results is discussed.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"208 ","pages":"Article 104194"},"PeriodicalIF":5.7,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142902111","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 complementary energy-based constitutive model for the Mullins effect Mullins效应的互补能量本构模型

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-12-22 DOI: 10.1016/j.ijengsci.2024.104195

Edgár Bertóti

{"title":"A complementary energy-based constitutive model for the Mullins effect","authors":"Edgár Bertóti","doi":"10.1016/j.ijengsci.2024.104195","DOIUrl":"10.1016/j.ijengsci.2024.104195","url":null,"abstract":"<div><div>A phenomenological pseudo-elastic model for isotropically elastic, incompressible materials exhibiting Mullins-type dissipation has been developed using a complementary energy-based approach. The work-conjugate constitutive variables in the inverse stress–strain relations are the Hencky logarithmic strain tensor and the Cauchy stress tensor. The thermo-mechanically consistent pseudo-elastic model is derived by applying the dissipation inequality in terms of complementary energy. The basic constitutive model for the virgin material is described by a complementary energy potential, which is assumed to be a power-law function of the second and third invariants of the deviatoric Cauchy stress tensor. The scalar measure of the maximum load is chosen to be the basic complementary energy. The virgin state variable describes the amplification of the logarithmic strain and behaves monotonically with respect to the Cauchy stress along the secondary loading paths. The applicability and efficacy of the model are demonstrated for uniaxial tension problems. The basic model contains three fitting parameters, and the monotonic amplification of the logarithmic strain is described by one additional fitting parameter. The predictive capability of this four-parameter pseudo-elastic model is validated through parameter fitting procedures using three different sets of experimental data from the open literature.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"208 ","pages":"Article 104195"},"PeriodicalIF":5.7,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874755","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}

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A thermo-poroelasticity model for partially saturated porous media 部分饱和多孔介质的热孔弹性模型

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2024-12-21 DOI: 10.1016/j.ijengsci.2024.104196

Zhi-He Jin , Michael L. Peterson

{"title":"A thermo-poroelasticity model for partially saturated porous media","authors":"Zhi-He Jin , Michael L. Peterson","doi":"10.1016/j.ijengsci.2024.104196","DOIUrl":"10.1016/j.ijengsci.2024.104196","url":null,"abstract":"<div><div>This work describes a thermo-poroelasticity model for a porous medium filled by two immiscible fluids in the framework of the Biot theory of poroelasticity. Local thermal equilibrium is assumed, i.e., the solid, the wetting fluid and the nonwetting fluid experience the same temperature variation in a continuum material particle. The constitutive relations in the present model include the thermally induced fluid content variations for both the wetting and nonwetting fluids. The model is employed to study the thermo-poroelastic responses of a borehole in a partially saturated, infinite porous medium subjected to a uniform temperature variation at the borehole boundary. The Laplace transform technique is used to obtain closed form, short time solutions for the thermally induced pore pressure and stress fields around the borehole. The analytical solutions indicate that the pore pressures of both the wetting and nonwetting fluids around the borehole at short times are characterized by the complementary error functions with the time scaled by partial saturation parameters as well as the thermal diffusivity of the porous medium. The numerical results for a porous medium dominantly filled by the wetting fluid indicate that the peak thermal pore pressure of the wetting fluid is much higher than that in the corresponding porous medium fully saturated by the wetting fluid while the thermal fluid content variation of the wetting fluid becomes lower due to partial saturation. Partial saturation also increases the thermal radial stress but the thermal hoop stress is relatively insensitive to partial saturation.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"208 ","pages":"Article 104196"},"PeriodicalIF":5.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874784","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