International Journal of Engineering Science最新文献

Numerical modeling of effective elastic properties for heterogeneous porous media. Application to a case study of a carbonate reservoir rock sample 非均质多孔介质有效弹性特性的数值模拟。应用于碳酸盐岩储层岩石样品的实例研究

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-06-20 DOI: 10.1016/j.ijengsci.2025.104309

A. Markov , M.A. Díaz-Viera , M. Coronado , S. Morales-Chávez

{"title":"Numerical modeling of effective elastic properties for heterogeneous porous media. Application to a case study of a carbonate reservoir rock sample","authors":"A. Markov , M.A. Díaz-Viera , M. Coronado , S. Morales-Chávez","doi":"10.1016/j.ijengsci.2025.104309","DOIUrl":"10.1016/j.ijengsci.2025.104309","url":null,"abstract":"<div><div>An application of an open-access software destined for fast calculation of the contribution of an individual inhomogeneity of one of two types (cracks or inclusions/pores) to calculation of the effective elastic properties of an oil reservoir rock sample extracted from a wellcore fragment containing isolated pores is presented. We obtained the pore geometries by a 3D image from an X-ray tomography processed and converted into stereolithography (.stl) format. The data required for the calculations besides the shapes of the inhomogeneities are the Young’s modulus and the Poisson’s ratio of the matrix (in the isotropic case); these data were found by geological analysis. After we had calculated the contribution of each pore to the elastic properties of the rock sample, we obtained the overall effective elastic properties by the Mori–Tanaka scheme. The proposed methodology is straightforward and it was possible to detect even a slight anisotropy (less than 5%) of the effective elastic properties. We found experimentally the effective elastic properties of the sample from the measurement of the acoustic wave velocities. The results obtained show a good agreement in terms of anisotropy and porosity detection; however, the effective elastic properties diverged by a large margin (up to 200%). This may be explained by the presence of microcracks undetected by the tomography. As a future work, we consider a more thorough study of the microstructure of the sample to verify the hypothesis about the presence of microcracks.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"215 ","pages":"Article 104309"},"PeriodicalIF":5.7,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321318","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

Closed-form analysis of the size effects in Body-centered cubic micro-/nanolattices 体心立方微/纳米晶格尺寸效应的封闭分析

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-06-19 DOI: 10.1016/j.ijengsci.2025.104311

Pengpeng He , Yintang Wen , Xi Liang , Xiaoli Du , Yankai Feng , Yaxue Ren , Yuyan Zhang

{"title":"Closed-form analysis of the size effects in Body-centered cubic micro-/nanolattices","authors":"Pengpeng He , Yintang Wen , Xi Liang , Xiaoli Du , Yankai Feng , Yaxue Ren , Yuyan Zhang","doi":"10.1016/j.ijengsci.2025.104311","DOIUrl":"10.1016/j.ijengsci.2025.104311","url":null,"abstract":"<div><div>Micro-/nanolattice structures exhibit exceptional mechanical properties, making them highly promising for applications in micro/nano devices and aerospace areas. However, existing research has primarily focused on experimental studies of compression and bending in three-dimensional micro-/nanolattices, resulting in a limited understanding of the size-dependent mechanisms influencing their macroscopic behavior. To address this gap, this study develops a trans-scale analytical model that integrates modified couple stress theory and Timoshenko beam theory, enabling a comprehensive analysis of body-centered cubic(BCC) micro-/nanolattice unit cells. The model is derived using the Hamiltonian principle through variational calculations, taking into account both Poisson’s ratio and size effects. Utilizing Navier’s method, an analytical relationship is established between the length scale parameter and the macroscopic response of the unit cell under quasi-static conditions. The effectiveness of the model in predicting responses is validated against experimental data. Parameter analysis reveals that size effects cannot be neglected when the dimensionless parameter <span><math><mrow><mi>d</mi><mo>/</mo><mi>l</mi></mrow></math></span> is less than 10 in BCC micro-/nanolattice unit cell response evaluations. Under the combined influence of substrate parameters and size effects, the unit cell exhibits both linear and nonlinear mechanical behaviors, even notable singular features. In particular, strong size effects result in a negative Poisson’s ratio feature of the unit cell. This study not only bridges the theoretical gap in evaluating the response of micro-/nanolattices under size effects but also provides solid theoretical support for the optimized design of micro-/nanolattice devices and aerospace devices area.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"215 ","pages":"Article 104311"},"PeriodicalIF":5.7,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144312771","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

Impact of inertial and nonlinear damping effects on the strain-induced domain wall motion in bilayer composite structure 惯性和非线性阻尼效应对双层复合材料结构应变诱导畴壁运动的影响

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-06-18 DOI: 10.1016/j.ijengsci.2025.104320

Sarabindu Dolui , Ambalika Halder , Saketh Kurumaddali , Sharad Dwivedi

{"title":"Impact of inertial and nonlinear damping effects on the strain-induced domain wall motion in bilayer composite structure","authors":"Sarabindu Dolui , Ambalika Halder , Saketh Kurumaddali , Sharad Dwivedi","doi":"10.1016/j.ijengsci.2025.104320","DOIUrl":"10.1016/j.ijengsci.2025.104320","url":null,"abstract":"<div><div>This article analytically investigates the combined impact of inertial and nonlinear damping (viscous and dry friction) effects on the strain-controlled dynamic features of domain walls in an isotropic, linearly elastic hybrid bilayer piezoelectric-magnetostrictive composite structure. To be precise, we perform the analysis under the one-dimensional inertial Landau–Lifshitz–Gilbert equation, considering the influences of stresses induced by a piezoelectric actuator. By employing the classical traveling wave ansatz, this study explores how various factors, such as magnetostriction, magnetoelasticity, viscous, dry friction, and inertial damping effects, characterize the motion of the magnetic domain walls in both the steady-state and precessional dynamic regimes. The results exhibit valuable insights into how these key parameters can effectively modulate dynamic features such as domain wall width, velocity, mobility, threshold, and Walker breakdown limits. The obtained analytical results are further numerically illustrated for metallic and semiconductor ferromagnet, and a qualitative comparison with recent observations is also presented.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"215 ","pages":"Article 104320"},"PeriodicalIF":5.7,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307640","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

A well-posed theory of linear non-local elasticity 线性非局部弹性的适定理论

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-06-18 DOI: 10.1016/j.ijengsci.2025.104314

Andrea Nobili , Dipendu Pramanik

{"title":"A well-posed theory of linear non-local elasticity","authors":"Andrea Nobili , Dipendu Pramanik","doi":"10.1016/j.ijengsci.2025.104314","DOIUrl":"10.1016/j.ijengsci.2025.104314","url":null,"abstract":"<div><div>We address ill-posedness of Eringen’s non-local theory of elasticity, as a result of the implicit presence of boundary conditions, termed constitutive (CBCs), embedded in the choice of the attenuation function (kernel). Such CBCs supplement the natural boundary conditions of the problem, hence the problem becomes overdetermined and, almost inevitably, ill-posed. Although this feature is true in general, it is especially manifest when the kernel is the Green function of a differential operator. To guarantee well-posedness for any loading, we propose a method by which the kernel is modified only in terms of the CBCs, which are selected to coincide with the natural boundary conditions of the problem. Taking the Helmholtz kernel as an example, we show that, after modification, the self-adjoint character of the integral operator is preserved, which guarantees that the attached elastic energy is a (positive definite) quadratic functional. By eigenfunction expansion of the kernel, we prove, through some examples, that the results obtained from the differential formulation correspond to those given by the integral problem, a result largely disputed in the literature. Along the process, we explain the inevitable appearance of scenarios, sometimes named <em>paradoxes</em>, which lead to solutions that match those of local elasticity. This outcome simply emerges whenever any particular problem produces a local curvature field which matches one of the kernel’s eigenfunctions and it is in no way connected with the problem of the CBCs. Given that the modified kernel remains close to the original kernel away from the boundaries, results correspond to Eringen’s in the limit of an infinite domain. Comparison is also made with respect to the Two Phase Non-local Model (TPNM), that also warrants well-posedness for any load and yet, in contrast to this approach, requires extra nonphysical boundary conditions.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"215 ","pages":"Article 104314"},"PeriodicalIF":5.7,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307641","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

Network yield and detangling as a tool for modeling back-stress network softening: A thermodynamically consistent model for polycarbonate 作为模拟背应力网络软化的工具：聚碳酸酯的热力学一致模型

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-06-11 DOI: 10.1016/j.ijengsci.2025.104322

Wenlong Li , Mehrdad Negahban , Weixu Zhang , Lili Zhang , Jianguo Zhu

{"title":"Network yield and detangling as a tool for modeling back-stress network softening: A thermodynamically consistent model for polycarbonate","authors":"Wenlong Li , Mehrdad Negahban , Weixu Zhang , Lili Zhang , Jianguo Zhu","doi":"10.1016/j.ijengsci.2025.104322","DOIUrl":"10.1016/j.ijengsci.2025.104322","url":null,"abstract":"<div><div>A continuum thermodynamic constitutive model is developed to predict the large-deformation response of glassy polycarbonate (PC) across a broad range of thermo-mechanical loading conditions. It integrates both slow- and fast-relaxing components, enabling it to capture responses from quasi-static to dynamic loading. The slow-relaxing component features a novel back-stress element that evolves due to network disentanglement. This element is designed to yield under load and soften to reproduce new experimental results showing gradual softening of the kinematic hardening slope during progressively expanding cyclic loading. This thermodynamically consistent model proposes heat dissipation that captures the experimentally estimated adiabatic temperature rise in new cyclic shear tests. The elastic response of the model is engineered to reproduce the observed deformation-induced change in elastic anisotropy, and the flow indicates the emergence of both anisotropic yield and flow. The model reproduces responses observed by others in tension and compression across a wide range of strains, strain rates, and temperatures. It also captures stress relaxation following large deformation, strain recovery after loading and unloading, and ratcheting during cyclic tensile loading.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"215 ","pages":"Article 104322"},"PeriodicalIF":5.7,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253525","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

Curved pipes subjected to mechanochemical corrosion under pressure: Analytical and numerical estimates of the lifetime 压力下受机械化学腐蚀的弯曲管道：寿命的分析和数值估计

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-06-11 DOI: 10.1016/j.ijengsci.2025.104319

Alexander Ilyin, Yulia Pronina

{"title":"Curved pipes subjected to mechanochemical corrosion under pressure: Analytical and numerical estimates of the lifetime","authors":"Alexander Ilyin, Yulia Pronina","doi":"10.1016/j.ijengsci.2025.104319","DOIUrl":"10.1016/j.ijengsci.2025.104319","url":null,"abstract":"<div><div>For the estimates of durability of curved pipes, solutions for toroidal shells are often utilized. This paper discusses several available approximate closed-form static solutions for toroidal shells under pressure, and tests them against finite elements computations. Modifications of the considered solutions, relevant to improving accuracy in strength analyses are developed and approximate analytical solutions for the lifetime of toroidal shells subjected to one- or double-sided mechanochemical corrosion under internal and external pressures are obtained, for the first time. The maps of discrepancies between the analytical and numerical solutions for static and evolutionary problems are built, reasons for these discrepancies and applicability of both approaches being discussed. The study highlights how pipe curvature and mechanochemical effect can influence stress distribution and corrosion progression, offering insights for corrosion monitoring strategies. It is shown, in particular, that due to mechanochemical effect, the location of the maximum stresses at the inner surface may shift from the intrados towards the torus crown, resulting in intensification of the internal corrosion in the area between the intrados and the crown.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"215 ","pages":"Article 104319"},"PeriodicalIF":5.7,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253524","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

Surface-driven computational homogenization method for metamaterial beams 超材料梁的表面驱动计算均匀化方法

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-06-06 DOI: 10.1016/j.ijengsci.2025.104313

Shuo Li , Linghua Xiao , Yu Zhang , Daming Nie , Li Li

{"title":"Surface-driven computational homogenization method for metamaterial beams","authors":"Shuo Li , Linghua Xiao , Yu Zhang , Daming Nie , Li Li","doi":"10.1016/j.ijengsci.2025.104313","DOIUrl":"10.1016/j.ijengsci.2025.104313","url":null,"abstract":"<div><div>Metamaterials exhibit extraordinary mechanical properties that surpass those of their constituent materials and conventional constitutive relationships, primarily due to the unique characteristics of their microstructural units and their interactions. However, traditional homogenization methods often fail to capture these remarkable behaviors. This study explores the influence of microstructural units on the size-dependent bending response of metamaterial beams, attributing the observed effects to microstructure-induced surface elasticity. A full-thickness representative volume element (RVE) is constructed, and a surface-driven computational homogenization method (CHM) is developed to accurately characterize the microstructure-induced surface effects. The surface thickness parameters in the homogenized elastic model are calibrated using high-fidelity, high-throughput FEM-based homogenization of the full-thickness RVE. By precomputing a dataset of effective properties and surface thicknesses for various full-thickness RVEs, the developed homogenization model enables efficient and accurate online predictions of metamaterial beam behavior. The results demonstrate that the developed homogenization method, incorporating microstructure-dependent surface thickness, can effectively and accurately capture the mechanical response of metamaterial beams. The proposed model significantly outperforms classical homogenization model that neglect surface effects, particularly in macroscopic bending deformation.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"215 ","pages":"Article 104313"},"PeriodicalIF":5.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232603","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

Creep failure mechanism in single-lap joints 单搭接节点蠕变破坏机理

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-06-04 DOI: 10.1016/j.ijengsci.2025.104315

Marcin Kujawa , Victor A. Eremeyev , Łukasz Smakosz , Karol Winkelmann , Piotr Paczos , Adam Piasecki , Ireneusz Kreja

{"title":"Creep failure mechanism in single-lap joints","authors":"Marcin Kujawa , Victor A. Eremeyev , Łukasz Smakosz , Karol Winkelmann , Piotr Paczos , Adam Piasecki , Ireneusz Kreja","doi":"10.1016/j.ijengsci.2025.104315","DOIUrl":"10.1016/j.ijengsci.2025.104315","url":null,"abstract":"<div><div>The paper presents a study on adhesive creep mechanisms and failure in single lap adhesive-bonded joints, focusing on their time performance and durability. Adhesive connections, while advantageous for their uniform stress distribution, are susceptible to creep-progressive deformation under sustained loading. In the study, the adhesive creep behavior is modeled, employing advanced nonlinear FEA techniques and a probabilistic approach to capture the material complexities within the joint. Cohesive zone models and traction–separation laws are used to simulate crack initiation and propagation within the adhesive layer. The random field approach is used to govern the distribution of internal material imperfections. The results highlight the impact of creep on joint stiffness, ultimate strength, and damage progression over time, offering insights into the critical parameters affecting joint reliability and providing a basis for optimizing adhesive materials in structural applications. The material parameters used in the FE analysis were determined through experimental tests, and the numerical results were validated against experimental studies. The study demonstrates that the load capacity of the single-lap joint is significantly influenced by material imperfections, with their impact depending on both their percentage and location.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"215 ","pages":"Article 104315"},"PeriodicalIF":5.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204137","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

Influence of geometrical incompatibility on morphological instability and evolution of growing tubular soft matter 几何不亲和性对生长管状软物质形态不稳定性及演化的影响

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-06-04 DOI: 10.1016/j.ijengsci.2025.104308

Congshan Liu , Wenxiang Tao , Yipin Su , Kecheng Li , Chuanzhuang Zhao , Chaofeng Lü , Chuanzeng Zhang , Vladimir Babeshko

{"title":"Influence of geometrical incompatibility on morphological instability and evolution of growing tubular soft matter","authors":"Congshan Liu , Wenxiang Tao , Yipin Su , Kecheng Li , Chuanzhuang Zhao , Chaofeng Lü , Chuanzeng Zhang , Vladimir Babeshko","doi":"10.1016/j.ijengsci.2025.104308","DOIUrl":"10.1016/j.ijengsci.2025.104308","url":null,"abstract":"<div><div>Geometrical incompatibility regulated morphological pattern formation and transition across length scales are widely observed in growing soft matter systems, and have attracted considerable attentions due to their widespread applications. Here, the influence of geometrical incompatibility on the growth-induced pattern formation and morphological evolution on the outer surface of bilayer tubes is investigated comprehensively, through quantitative swelling experiment, numerical simulation and theoretical analysis. Both experimental and theoretical results demonstrate that not only the wrinkling pattern but also the critical growth factor can be regulated by manipulating geometric incompatibility. An increasing geometrical incompatibility parameter leads to a pattern transition from the longitudinal pattern to 2D pattern and then to circumferential pattern, and brings forward the onset of swelling-induced wrinkling instability. Notably, spontaneous instability can be observed on the outer surface when the geometrical incompatibility parameter rises to a critical value. Morphological phase diagrams on pattern selection further illustrate how geometrical incompatibility influences the growth-induced morphological instability by coupling with the thickness ratio and modulus ratio. In agreement with our experimental observations, the numerical results show that geometrical incompatibility also has a significant influence on the post-buckling evolution of the wrinkling patterns. The results not only provide a fundamental understanding of the morphological pattern formation on soft matter system, but also pave a new avenue for the fabrication of periodic patterns on curved surfaces through self-wrinkling.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"215 ","pages":"Article 104308"},"PeriodicalIF":5.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204138","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

Towards new strut-based auxetic meta-biomaterials for trabecular bone scaffolds 骨小梁支架新型支撑物辅助元生物材料研究

IF 5.7 1区工程技术

International Journal of Engineering Science Pub Date : 2025-06-02 DOI: 10.1016/j.ijengsci.2025.104316

A. Sorrentino , G. Bianchi , E. Radi , D. Castagnetti

{"title":"Towards new strut-based auxetic meta-biomaterials for trabecular bone scaffolds","authors":"A. Sorrentino , G. Bianchi , E. Radi , D. Castagnetti","doi":"10.1016/j.ijengsci.2025.104316","DOIUrl":"10.1016/j.ijengsci.2025.104316","url":null,"abstract":"<div><div>The work proposes new highly porous, bone-mimicking auxetic meta-biomaterials as trabecular scaffolds for additively manufactured titanium orthopedic implants. The elementary cell of the lattice architecture proposed here consists of strut-based prismatic trabecular units connected by chiral ligaments at their corners. Through an analytical model and Finite Element simulations, we evaluate the <em>quasi-static</em> effective mechanical properties of the investigated bio-designs, revealing that these meta-biomaterials exhibit a wide range of porosities, Young’s moduli, and yield stresses similar to those of human bones, and particularly, vertebral cancellous bone tissues. The developed analytical and computational models consider both the Euler-Bernoulli and Timoshenko beam theories to estimate the meta-biomaterial properties. We also show that these lattice models possess a transverse isotropic property for a specific geometric configuration of the elementary units, and a wide range of negative Poisson’s ratios. In addition, analytical expressions for the elastic properties of such lattices as a function of their unit cell topology are derived and presented. A physical prototype of the proposed lattice architecture is then fabricated using additive manufacturing, in polymeric material, and experimentally tested to assess its auxetic potential, thus validating our analytical and computational predictions. Overall, our results demonstrate that these novel meta-biomaterials exhibit a combination of relatively low elastic moduli and high porosity values that potentially reduce the stress-shielding phenomena while promoting the bone ingrowth within them. The preliminary findings of this work provide new insights into the development of lightweight auxetic lattices for additively manufactured metallic vertebral implants and devices in the spinal oncology.</div></div>","PeriodicalId":14053,"journal":{"name":"International Journal of Engineering Science","volume":"215 ","pages":"Article 104316"},"PeriodicalIF":5.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144190301","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