Composite Structures最新文献

{"title":"Effects of grinding parameters on material failure mechanisms of 2D silicon carbide fiber-reinforced silicon carbide composites","authors":"Yao Liu ,&nbsp;Zhaokun Zhang ,&nbsp;Jiahao Li ,&nbsp;Jinzhu Guo ,&nbsp;Jinjie Zhou ,&nbsp;Chunlei K. Song","doi":"10.1016/j.compstruct.2025.119175","DOIUrl":"10.1016/j.compstruct.2025.119175","url":null,"abstract":"<div><div>The Silicon Carbide Fiber-Reinforced Silicon Carbide (SiC_f/SiC) composite is widely used in ultra-high-temperature applications due to its exceptional properties, but its brittleness makes machining, especially grinding, challenging. This study investigates the failure modes of fibers and the matrix during grinding of 2D SiC_f/SiC composites under varying process parameters, such as wheel speed, feed rate, grinding depth, and surface structure. The results show that transverse fibers undergo ductile removal, shear fracture, bending fracture, and tensile fracture, while longitudinal fibers primarily experience ductile removal, tensile fracture, and bending fracture and normal fibers mainly exhibit shear and bending fractures. The matrix exhibits ductile, brittle, powdery, and peel-off removal modes. Grinding the woven surface (WS) leads to higher grinding forces and surface roughness than the stacking surface (SS), due to differences in fracture mechanisms. The primary material removal mechanisms of grinding wheel are friction wear and grit breakage, resulting from the high hardness of SiC_f/SiC. Increasing wheel speed reduces both grinding force and surface roughness by promoting ductile removal, which is attributed to decreased undeformed chip thickness and enhanced strain toughness. The optimal grinding conditions are high wheel speed and sharp grit on the SS, yielding the best surface quality.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"365 ","pages":"Article 119175"},"PeriodicalIF":6.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Topology optimization of hard-magnetic soft laminates for wide tunable SH wave bandgaps","authors":"Zeeshan Alam,&nbsp;Atul Kumar Sharma","doi":"10.1016/j.compstruct.2025.119157","DOIUrl":"10.1016/j.compstruct.2025.119157","url":null,"abstract":"<div><div>The periodic laminates made of hard-magnetic soft materials (HMSMs) have recently received increasing attention due to their tunable phononic bandgap characteristics—ranges of frequencies at which sound and vibrations cannot propagate, which can be controlled remotely through magnetically induced finite deformations. In this work, we present a gradient-based topology optimization framework for determining the optimum distribution of laminate phases to optimize the anti-plane shear wave (SH wave) bandgap characteristics. In particular, by employing the method of moving asymptotes (MMA), we maximize the bandgap width when the laminate is subjected to external magnetic fields. The Gent material model of hyperelasticity, in conjunction with the ideal HMSMs model, is used to describe the constitutive response of the laminate phases. To extract the band structure of the hard-magnetic soft laminate, we employ an in-house finite element model. To demonstrate the capability of the developed numerical framework, a parametric study exploring the effect of the applied external magnetic field on the optimized bandgap characteristics and the design of the periodic laminated composite unit cell is presented. The optimization framework presented in this study will be helpful in the design and development of futuristic tunable wave manipulators.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"366 ","pages":"Article 119157"},"PeriodicalIF":6.3,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Visco-elastoplastic constitutive modeling of coated woven fabrics — Impact of inelastic response on structural analysis","authors":"L. Makhool,&nbsp;D. Balzani","doi":"10.1016/j.compstruct.2025.119164","DOIUrl":"10.1016/j.compstruct.2025.119164","url":null,"abstract":"<div><div>A constitutive model for the highly nonlinear, anisotropic, and inelastic behavior of coated woven fabrics is proposed by suitably combining different model components from the literature. The material model accounts for viscoelasticity and plastic anisotropy at finite strains and thus, enables the geometrically nonlinear simulation of engineering constructions including prestretch processes and history-dependent load protocols. The formulation is adjusted to experimental data, specifically designed to isolate the individual aspects of the model, and it shows a decent agreement with the data. A numerical integration procedure is provided and the utilization of the model in a computational setting is addressed. Through an exemplary boundary value problem replicating a simplified roof construction, the impact of the individual features of the model on the structural response are analyzed and compared with the linear elastic model commonly used in engineering practice and a competitive hyperelastic model from the literature. As a result, the model shows significant differences to the simpler formulations and is thus found beneficial for the numerical analysis of structural problems.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"365 ","pages":"Article 119164"},"PeriodicalIF":6.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the flexural creep stiffness of chopped basalt fiber reinforced asphalt using finite elements and mean field homogenization","authors":"Xing Wu ,&nbsp;Gabriele Milani ,&nbsp;Aihong Kang ,&nbsp;Pengfei Liu","doi":"10.1016/j.compstruct.2025.119197","DOIUrl":"10.1016/j.compstruct.2025.119197","url":null,"abstract":"<div><div>The aim of the paper is to study the flexural creep stiffness of chopped basalt fiber reinforced asphalts (CBFRAs) using both the finite element (FE) and the mean field homogenization (MFH) method. First, a reliable three-dimensional FE model of a chopped basalt fiber reinforced asphalt is artificially generated with Matlab. Two FE models, in which wire and solid elements are used to mesh fibers, are numerically tested in bending and compared, validating them against experimental results. Then, two different mean field homogenization analytical models based on the Mori-Tanaka approach, which consider the random fiber orientations are developed and applied to predict the flexural creep stiffness of CBFRAs. Third, different fiber approximation methods are considered to carry out MFH computations. Fourthly, the MFH-amending-coefficient (MFHAC) method is proposed to amend MFH predictions, to improve convergence towards FE results. Finally, the MFH methods are compared with several traditional micro-mechanical models available. The results show that there is a significant difference between the results obtained using wire and solid elements, the solid FE model being more reliable. Particular attention should be paid to the values adopted for the fiber simplification number, to match correctly with experimental evidence. The flexural creep stiffness predicted by the two proposed MFH analytical models are closely aligned one each other. The fiber approximation methods adopted during the MFH analysis affect the results, with predictions more accurate when the actual fiber bundle is represented as an ellipsoidal inclusion based on the same-volume-radius criterion. The MFH-amending-coefficient method, combined with the results provided by MFH, can correctly predict the flexural creep stiffness of CBFRAs, allowing a reduction of the computational burden and an increase of computational efficiency when compared with standard FE simulations. It is finally shown how the MFH methods proposed are more accurate than existing methods available in literature.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"365 ","pages":"Article 119197"},"PeriodicalIF":6.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spiderweb-inspired flexible mesh composites with excellent impact resistance, sensing performance and flame retardancy","authors":"Aolin Yang,&nbsp;Lele Liu,&nbsp;Chaoyu Chen,&nbsp;Zhijia Dong,&nbsp;Pibo Ma","doi":"10.1016/j.compstruct.2025.119187","DOIUrl":"10.1016/j.compstruct.2025.119187","url":null,"abstract":"<div><div>Mesh materials, due to their unique structure and excellent performance, are widely used, especially spiderweb structural materials, which have garnered significant attention. Besides requiring lightweight, flexibility, and excellent mechanical performance, intelligence and multifunctionality are also crucial development directions for mesh. In this study, we propose a novel spiderweb-inspired mesh composite (MSTFs/mesh) with excellent impact resistance, sensing performance and flame retardancy. The composite features a knotless mesh with a spiderweb-like topology, fabricated through braiding and knitting techniques, serving as the structural body, complemented by functional layers of shear thickening fluid containing multi-walled carbon nanotubes. Yarn pull-out and bursting tests revealed that the maximum resistance forces of the MSTFs/mesh are 144 N and 3516 N respectively, which are 11.2 times and 1.58 times higher than those of the neat mesh. The topology of the spider web and the shear thickening fluid provide the mesh composite with outstanding impact resistance, capable of withstanding an impact energy of 50 J. The incorporation of MWCNTs imparts sensing capabilities to the composite. Furthermore, the mesh composite retains its structural integrity after 40 s of burning on an alcohol lamp flame, demonstrating excellent flame retardancy and thermal stability. This advanced multifunctional mesh composite offers valuable insights into the design of next-generation mesh materials, promising extensive applications in protection engineering and beyond.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"365 ","pages":"Article 119187"},"PeriodicalIF":6.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Homogeneous and functionally graded piezoelectric structure analysis with finite block method","authors":"X.B. Yan ,&nbsp;S.M. Liu ,&nbsp;P.H. Wen ,&nbsp;J. Sladek ,&nbsp;V. Sladek","doi":"10.1016/j.compstruct.2025.119188","DOIUrl":"10.1016/j.compstruct.2025.119188","url":null,"abstract":"<div><div>In this paper, the functionally graded structures are investigated by using the partial differential matrix of the finite block method with Lagrange polynomial interpolation. A discrete scheme is proposed first time to solve the two- and three-dimensional piezoelectric coupling problems. The nodal values of the displacements and electric potential are evaluated by solving a set of linear algebraic equations established from the governing equations and boundary conditions of the piezoelectric problems. The dynamic responses of the layered piezoelectric problems are solved either in Laplace transform domain with Durbin’s inverse technique or in time domain Houbolt method. Several numerical examples are given to investigate 2D homogeneous and functionally graded material structures vibration under actuator voltage. In addition, the influence of three kinds of boundary condition on the maximum deflection is also studied in order to control the piezoelectric integrated structure by applying actuator voltage to the upper and lower surfaces of the piezoelectric layer. Three-dimensional static and dynamic analysis in piezoelectric materials are also carried out in this paper. By comparing with both analytical solutions and numerical solutions by COMSOL, the results show high accuracy and convergence.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"365 ","pages":"Article 119188"},"PeriodicalIF":6.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the elastic wave speed in heterogeneous materials and structures: A concurrent multiscale modeling approach","authors":"Heng Zhang ,&nbsp;Ang Zhao ,&nbsp;Zhe Liu ,&nbsp;Lu Meng ,&nbsp;Liuyang Zhang ,&nbsp;Pei Li","doi":"10.1016/j.compstruct.2025.119193","DOIUrl":"10.1016/j.compstruct.2025.119193","url":null,"abstract":"<div><div>Elastic wave speed is significant for studying materials’ dynamic behavior, and usually evaluated using the classical equations <span><math><mrow><mi>c</mi><mo>=</mo><msqrt><mrow><mi>E</mi><mo>/</mo><mi>ρ</mi></mrow></msqrt></mrow></math></span> or <span><math><mrow><mi>c</mi><mo>=</mo><msqrt><mrow><mfenced><mrow><mi>λ</mi><mo>+</mo><mn>2</mn><mi>μ</mi></mrow></mfenced><mo>/</mo><mi>ρ</mi></mrow></msqrt></mrow></math></span> especially for homogeneous isotropic materials. However, these analytical methods may not be suitable for heterogeneous materials and structures, while the direct numerical simulation (DNS) using finite element method requires a huge number of elements which leads to unmanageable computational cost. To this end, the Direct Finite Element Square (DFE²) method was used to simulate the elastic wave propagation in heterogeneous materials and structures, whereby it was proposed that both <em>meso</em>-scale stress and density should be scaled in the DFE² method to accurately predict the wave transmission time in heterogeneous materials. Also, it was found that DFE² method generally predicts a higher elastic wave speed due to the unrealistic wave transmission in the macro-element at the impact end, and the error can be reduced by refining the macro-elements. Simulation of several heterogenous materials such as fiber reinforced polymer composites, anisotropic cellular structures and density-gradient porous panels show that the DFE² method can capture the elastic wave speed in 2D heterogeneous materials and structures more accurately compared to classical estimation equations, whereby the DNS result was used as reference. Moreover, the DFE² method exhibits a high computational efficiency, i.e., more than 10 times higher than DNS, and can be easily implemented using available features in commercial software. This implies the valuable potential of the DFE² method in evaluating the elastic wave speed in heterogeneous materials and structures.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"365 ","pages":"Article 119193"},"PeriodicalIF":6.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A deep learning and finite element approach for exploration of inverse structure–property designs of lightweight hybrid composites","authors":"Sanjida Ferdousi ,&nbsp;Zoriana Demchuk ,&nbsp;Wonbong Choi ,&nbsp;Rigoberto C. Advincula ,&nbsp;Yijie Jiang","doi":"10.1016/j.compstruct.2025.119179","DOIUrl":"10.1016/j.compstruct.2025.119179","url":null,"abstract":"<div><div>Hybrid composites have important applications, such as high-performance and lightweight materials in aerospace and automotive industries. Hybrid composites utilize the synergy of diverse fillers to achieve desired material properties, but usually have more complicated microstructures. While topology optimization can optimize a particular property, designing hybrid composites for customized mechanical performances, e.g. full-range stress–strain curve, remains challenging. Here, a computational framework that integrated finite element analysis (FEA) and artificial intelligence (AI) methods of Conditional Generative Adversarial Networks (cGAN) deep learning and transfer learning was developed to establish inverse structure–property relationships and design tailor-made hybrid composites. Based on FEA-generated datasets of hybrid fiber-particle–matrix microstructures and their<!--> <!-->corresponding full-range stress–strain curves, a cGAN architecture was trained to generate tailored microstructures and establish structure–property relationships. Similarity in microstructural features and well-matched stress–strain curves based on the AI-generated composites were achieved. Transfer learning was used to expand the pre-trained model for designing different materials systems.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"365 ","pages":"Article 119179"},"PeriodicalIF":6.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing shear strength of adhesive joint of high modulus CFRP with UV picosecond laser texturing technique","authors":"Chunyang Zhao,&nbsp;Weisheng Yan,&nbsp;Jiayan Sun,&nbsp;Feifan Zhao,&nbsp;Zhenhua Ma,&nbsp;Jianguo Lei","doi":"10.1016/j.compstruct.2025.119190","DOIUrl":"10.1016/j.compstruct.2025.119190","url":null,"abstract":"<div><div>High modulus carbon fiber reinforced polymer (HM-CFRP) is widely employed in the aerospace industry due to its high strength and lightweight characteristics. However, enhancing the bonding strength of adhesive joints remains a challenge. To improve the adhesive strength of HM-CFRP, the present study introduced a UV picosecond laser ring-texturing technique and investigated its effectiveness and the underlying mechanisms of strength enhancement. The maximum shear strength was obtained at a laser power of 1.9 W, as the carbon fibers of the HM-CFRP could be exposed and maintained their integrity. An increase in hydrophilic functional groups on the HM-CFRP surface after laser treatment was observed by FTIR technique. By using appropriate geometric parameters of the ablation area, the surface hydrophilicity and the adhesive strength of HM-CFRP were improved. The difference in bonding strength between different textures was investigated. The result shows that the bonding strength of the circle-ring texture improved by 64 % (18.24 MPa to 29.91 MPa) improvement compared with the untreated ones. By analyzing the failure interfaces and performing a simulation analysis, the ring-texturing mechanism improved the boding strength by impeding crack propagation and reducing the peeling force</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"365 ","pages":"Article 119190"},"PeriodicalIF":6.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy harvesting from delaminated variable stiffness piezolaminated plate and shell panels","authors":"Rishabh Shukla,&nbsp;S. Pradyumna","doi":"10.1016/j.compstruct.2025.119163","DOIUrl":"10.1016/j.compstruct.2025.119163","url":null,"abstract":"<div><div>Energy harvesting from piezolaminated panels has been greatly explored by researchers in past few decades. Delamination is a very common mode of failure in piezolaminated composites and affects the vibration response of the structure. In the present study, the effect of delamination on the Constant and Variable stiffness laminate energy harvester is studied. The energy harvesting characteristics like the voltage, power, and motion frequency response functions are studied. A nine-noded isoparametric element is used with first-order shear deformation theory-based formulation for the analysis of delaminated energy harvester. The continuity of displacement and rotational variables at the delamination fronts is achieved by the point continuity method. The effect of fiber path on the Variable stiffness delaminated harvester is studied and the variations of voltage, power and relative motion FRFs are plotted for different fiber paths. The effect of the location of delamination on different FRFs is also studied. The motion FRFs can be useful in detection of location of delamination FRFs. Parametric study of different geometric and boundary conditions is performed. The current study aims to present a benchmark study on the effect of delamination on different energy harvesting characteristics of the piezolaminated plate and shell constant and variable stiffness panels.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"364 ","pages":"Article 119163"},"PeriodicalIF":6.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}