International Journal of Solids and Structures最新文献

{"title":"A numerical upper-bound approach to the strength of a masonry wall under combined in-plane and out-of-plane loadings","authors":"Elodie Donval ,&nbsp;Ghazi Hassen ,&nbsp;Duc Toan Pham ,&nbsp;Patrick de Buhan","doi":"10.1016/j.ijsolstr.2025.113513","DOIUrl":"10.1016/j.ijsolstr.2025.113513","url":null,"abstract":"<div><div>The present contribution proposes a novel yield design, finite element based approach to determine the strength of a masonry wall. The proposed approach relies on a semi-analytical upper bound estimate of the in-plane and out-of-plane strength domain of a running bond masonry wall, recently proposed by Donval et al. (2024). Such an estimate is versatile, as it accounts for a finite strength for the blocks and the mortar, and a non-zero thickness for the joints, without any specific assumption on the state of stress or strain of the structure. This estimate may be expressed as a second-order cone optimization problem. We build on this property to derive a kinematic, finite element based formulation of the yield design problem. After describing the finite element implementation, some examples highlight the specificities of the approach. In particular, it accounts for the coupling between membrane stresses and bending moments, depends little on the mesh orientation, and provides a rigorous upper bound on the failure load of the structure. Then, the proposed approach is favorably compared to existing methods based on the limit analysis framework and to experiments.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"320 ","pages":"Article 113513"},"PeriodicalIF":3.4,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144470897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wrinkle behavior of adhesive lined pipe under cyclic bending","authors":"Yi-Fan Liang ,&nbsp;Zhan-Feng Chen ,&nbsp;Lin Yuan ,&nbsp;Yi Shuai ,&nbsp;Wen Wang","doi":"10.1016/j.ijsolstr.2025.113531","DOIUrl":"10.1016/j.ijsolstr.2025.113531","url":null,"abstract":"<div><div>The wrinkle behavior threatens the life and structural integrity of lined pipe, which is a typical composite structure. A new lined pipe with an adhesive layer exhibits excellent resistance to wrinkling. However, the mechanism of wrinkling in adhesive lined pipe remains unclear. In this paper, the wrinkle behavior of the new adhesive lined pipe is studied numerically. Firstly, the wrinkle behavior of adhesive lined pipe structure under cyclic bending load is examined by the finite element method. Secondly, the effect of the length of defects in the adhesive layer is studied. Finally, the influence of local welding and Glue-Free-Zone (GFZ) on the structural stability of the adhesive lined pipe is verified. The results imply that defects within the adhesive layer are a significant factor in wrinkling formation, with wrinkles forming in defect areas. The larger the defect size, the more severe the wrinkle behavior becomes, leading to greater damage to the bonding layer. Results also suggest that the design of GFZ and local welding in adhesive lined pipe structures is more reasonable, as wrinkle behavior in these areas under cyclic bending loads is minimal and does not cause damage to the bonding layer.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"320 ","pages":"Article 113531"},"PeriodicalIF":3.4,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Field Dislocation Mechanics, Conservation of Burgers vector, and the augmented Peierls model of dislocation dynamics","authors":"Amit Acharya","doi":"10.1016/j.ijsolstr.2025.113491","DOIUrl":"10.1016/j.ijsolstr.2025.113491","url":null,"abstract":"<div><div>Dissipative models for the quasi-static and dynamic response due to slip in an elastic body containing a single slip plane of vanishing thickness are developed. Discrete dislocations with continuously distributed cores can glide on this plane, and the models are developed as special cases of a fully three-dimensional theory of plasticity induced by dislocation motion. The reduced models are compared and contrasted with the augmented Peierls model of dislocation dynamics. A primary distinguishing feature of the reduced models is the a-priori accounting of space–time conservation of Burgers vector during dislocation evolution. A physical shortcoming of the developed models as well as the Peierls model with regard to a dependence on the choice of a distinguished, coherent reference configuration is discussed, and a testable model without such dependence is also proposed.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"320 ","pages":"Article 113491"},"PeriodicalIF":3.4,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144338711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelling the impact-damage behaviour of composite sandwich panels with functionally-graded TPMS-latticed cores","authors":"Chukwugozie J. Ejeh ,&nbsp;Imad Barsoum ,&nbsp;Wesley J. Cantwell ,&nbsp;Rashid K. Abu Al-Rub","doi":"10.1016/j.ijsolstr.2025.113534","DOIUrl":"10.1016/j.ijsolstr.2025.113534","url":null,"abstract":"<div><div>Advances in 3D printing technology have driven the digital design of multifunctional lattice structures for use in sandwich panel applications. However, understanding the intrinsic relationship between lattice-core topological features, especially when functionally graded, and impact properties is crucial for designing lightweight sandwich panels. Therefore, this paper simulates the low-energy drop-weight impact behavior of 3D printable sandwich panels composed of a stainless steel 316L sheet-based minimal surface lattice core and Prepreg skin. The study examines how cell size, relative density, topology of the lattice, and control of anisotropy in the core through periodicity gradation influence the low-energy impact-damage behavior of sandwich panels. The results indicate that the impact-damage behavior of sheet-based minimal surface-lattice sandwich panels is highly dependent on the core’s topological features. Notably, controlling anisotropy within the lattice core significantly enhanced the impact properties of the lightweight sandwich panel. Varying the periodicity of the Schwartz Diamond topology to control anisotropy in the lattice core improved the peak load and internal energy-to-maximum penetration ratio of the sandwich panel by 35.2 % and 42.4 %, respectively, for the same average relative density of 20 %. Moreover, combining periodicity gradation and relative density gradation using the same topology minimized damages to the frontal panel, in addition to contributing to 117.4 % and 130.6 % increase in peak load and specific energy absorption of sandwich panels, respectively, alongside a considerable rise in energy dissipation capacity. Furthermore, combining multiple lattice-topology functional gradation techniques proved essential in limiting failure localization and thus, improving the impact-damage tolerance of the sandwich panel. The study highlights the importance of combining various lattice-topology functional grading strategies to control the anisotropy and deformation behaviour of minimal surface lattices under drop-weight impact loads. These findings are crucial for designing high-impact protective and lightweight sandwich panels for diverse engineering applications.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"320 ","pages":"Article 113534"},"PeriodicalIF":3.4,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Approximate solution of finite deformation for the combined bending and torsion of circular tubes","authors":"Zekun Yang,&nbsp;Jianjun Wu,&nbsp;Hui Wang,&nbsp;Long Liu","doi":"10.1016/j.ijsolstr.2025.113533","DOIUrl":"10.1016/j.ijsolstr.2025.113533","url":null,"abstract":"<div><div>In this paper, the equilibrium problem of incompressible hyperelastic circular tubes under combined bending and torsional deformation is studied. By using polar coordinates on the axis, a three-dimensional kinematic model of the longitudinal bending of a circular tube with wall thickness variation is established. Due to the adoption of the semi-inverse method, the displacement field specified in the model contains three unknown functions. Lagrangian and Eulerian analyses are performed on the model to determine the (first) Piola-Kirchhoff stress and Cauchy stress, clarify the equilibrium equations and boundary conditions, and thus solve for the unknown parameters in the kinematic model. In addition, the established model is validated by comparing it with the finite element (FE) results. The results show that the established model is effective and exhibits high accuracy. It describes the combined deformation of bending and torsion quite well and obtains the axial normal stress and torsional shear stress with relatively high precision. It can characterize the distribution of the wall thickness and the strain-neutral layer (SNL) after deformation with quite high precision. According to the deformation angle, the corresponding bending moment and torque are obtained, and the relative errors are all at a low level. Finally, the axial elongation rates of tubes with different specifications are analyzed, and it is found that they increase with the increase of the outer diameter or the inner diameter.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"320 ","pages":"Article 113533"},"PeriodicalIF":3.4,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quasi-brittle fracture mechanics to assess ex vivo Raloxifene treatment of human cortical bone","authors":"Glynn Gallaway ,&nbsp;Rachel K. Surowiec ,&nbsp;Matthew R. Allen ,&nbsp;Joseph M. Wallace ,&nbsp;Laura J. Pyrak-Nolte ,&nbsp;John Howarter ,&nbsp;Thomas Siegmund","doi":"10.1016/j.ijsolstr.2025.113506","DOIUrl":"10.1016/j.ijsolstr.2025.113506","url":null,"abstract":"<div><div>Osteoporosis patients are growing in number, but treatments do not fully reduce fracture risk. Fracture mechanics, historically applied to engineering materials, provides tools to understand the non-linear behavior in cortical bone fractures and inform further treatment opportunities. Specifically, this study demonstrates the relevance of quasi-brittle fracture in the assessment of human cortical bone. Human cortical bone from one male donor femur was sectioned into notched prismatic bars and randomly assigned to two treatment groups: a control group and a treatment group. Treatment consisted of ex vivo soaking with Raloxifene, an FDA-approved pharmaceutical. In-situ four-point bend fracture experiments were conducted in the beamline of a 3D X-ray microscope under physiologic conditions. Fracture process zone (FPZ) length was measured directly from images. Quasi-brittle fracture mechanics (QBFM) theory was applied to assess treatment effects and determine bone tissue properties. QBFM scaling laws are applied to theoretically predict treatment effects at the organ length scale. In both treatment groups, the FPZ is large compared to the microstructure and sample dimension. Raloxifene treatment increases the tissue FPZ length and tissue fracture toughness of the material. Raloxifene treatment significantly decreases the brittleness of bone tissue at the experimental and organ length scales; non-linear relationships emerge from both microstructural influences on the fracture process. Due to the large FPZ and quasi-brittle behavior of the tissue, size effects on apparent fracture toughness emerge. The QBFM theory allows for understanding individual experiments in the context of size and treatment.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"320 ","pages":"Article 113506"},"PeriodicalIF":3.4,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peeling of elastic thin films from cylindrical substrates","authors":"Qingning Yang,&nbsp;Hao Long,&nbsp;Yanwei Liu,&nbsp;Yueguang Wei","doi":"10.1016/j.ijsolstr.2025.113529","DOIUrl":"10.1016/j.ijsolstr.2025.113529","url":null,"abstract":"<div><div>Peeling thin films from flat substrates is a significant testing method to investigate the behavior and characteristics of interfaces. While curved substrates are also common and widely utilized in engineering applications, the research of film peeling from curved substrates has not yet been fully explored and discussed. To clarify the behavior and characteristics of interfaces in film peeling on curved substrates, new models and test methods of peeling are needed. Herein, we propose a theoretical peeling model to describe the peeling of elastic thin films from cylindrical substrates based on Dugdale’s law and acquire theoretical solutions by moment equilibrium combined with elastica deformation description. These theoretical results can predict the load–displacement (<em>F</em>-<em>Δ</em>) curves and the maximum peeling force (<em>F</em>_max) and match well with finite element method results. We reveal the whole peeling process of thin films along the cylindrical substrates and find that <em>F</em>-<em>Δ</em> curves keep changing due to the substrate radius. A smaller substrate radius yields a more obvious change of peeling force. The substrate radius hardly affects <em>F</em>_max, and an increase in the initial peeling position angle increases <em>F</em>_max. The present study can provide guidance for peeling tests involving curved substrates in practical engineering applications.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"320 ","pages":"Article 113529"},"PeriodicalIF":3.4,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effective elastic moduli and failure mechanisms of a random assembly of thin walled glass microbubbles","authors":"Antonios E. Giannakopoulos ,&nbsp;Athanasios Zisis ,&nbsp;Anna D. Zervaki ,&nbsp;Christos D. Dimopoulos ,&nbsp;Efstathios Platypodis ,&nbsp;Robert Eberwein","doi":"10.1016/j.ijsolstr.2025.113528","DOIUrl":"10.1016/j.ijsolstr.2025.113528","url":null,"abstract":"<div><div>In this work a methodology is presented to estimate the elastic properties and failure mechanisms of an assembly of random, brittle microbubbles. The approach is based on the mechanics of frictionless micro-contact between hollow spherical shells by employing relations from classical shell theory and verified by two dimensional axisymmetric Finite Elements. The estimated values are in agreement with available experimental values. Moreover, a granular type analytical homogenization model provides an isotropic elastic constitutive law to be used for the macroscopic deformation of an assembly of glass micro-bubbles when it is compressed by external loads. In addition, approximate estimates are also proposed for two important micro-failure mechanisms of such assemblies that relate either to the splitting or to the buckling of a brittle spherical shell, prior its complete crushing. The results are novel and are expected to enhance the application of glass microbubbles directly in acute thermal insulation problems such as liquid hydrogen storage.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"320 ","pages":"Article 113528"},"PeriodicalIF":3.4,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A numerical study of the evolution of martensitic crack-tip transformation zones in strain-softening pseudoelastic shape memory alloys","authors":"Hongrui Yu,&nbsp;Chad M. Landis","doi":"10.1016/j.ijsolstr.2025.113492","DOIUrl":"10.1016/j.ijsolstr.2025.113492","url":null,"abstract":"<div><div>A numerical investigation is performed for strain softening shape memory alloys utilizing a gradient enhanced constitutive model with the finite element method to study the martensitic transformation near the crack tip under mode-I far-field loading. A unique interaction between the length scales, namely the transformation zone size and the material length scale in a softening shape memory alloy, and the morphology of the transformation zone is revealed. Under mode-I loading, the martensitic transformation produces distinct “needles” of intense transformation, and the overall shape of the transformation zone is similar to that in standard plasticity with the size scaling with the square of the far-field applied stress intensity factor divided by the square of the upper plateau transformation stress. Additional simulations reveal that the presence of <span><math><mi>T</mi></math></span>-stress facilitates the development of these needles and changes their orientation near the crack tip. These simulations indicate that careful observation of the transformation zones near crack tips in SMAs can be used to estimate the characteristic length scale associated with the austenite-to-martensite transition boundary in softening materials.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"320 ","pages":"Article 113492"},"PeriodicalIF":3.4,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A practical method for robust elastic characterisation of mortar in flat jack tests","authors":"Miles Robert William Judd,&nbsp;Marialuigia Sangirardi,&nbsp;Sinan Acikgoz","doi":"10.1016/j.ijsolstr.2025.113503","DOIUrl":"10.1016/j.ijsolstr.2025.113503","url":null,"abstract":"<div><div>Standard interpretations of in-situ flat jack tests rely on uniform stress states and only provide information on the mechanical properties of masonry as a composite and not those of its individual constituents. This paper develops a practical approach to identify the elastic characteristics of mortar using surface strain measurements (e.g. from Digital Image Correlation). It aims to provide robust identification under uncertain jack loads and stochastic material properties. A setup composed of three flat jacks inserted in masonry joints is explored in a micro-scale numerical model to develop the approach. The resulting surface strains are processed using the Virtual Fields Method to simultaneously and non-iteratively identify the mortar’s Young’s and shear modulus. Instead of the uncertain jack loads, mechanical properties of bricks, which are easy to obtain from laboratory testing of extracted samples, are used for the identification. The identified Young’s and shear moduli are robust against variations in jack penetration depth, measurement noise, stochastic material variability, and inaccuracies in brick properties. Poisson’s ratios are also identified, but less robustly, due to their limited influence on the measured strains. Finally, the use of VFM to reconstruct the uncertain jack forces is illustrated to deliver new insights on the applied loads during complex in-situ tests.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"320 ","pages":"Article 113503"},"PeriodicalIF":3.4,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}