Composite Structures最新文献

{"title":"Recent advances in aramid-based multilayer composites for thermal-moisture comfort regulation in firefighter protective clothing","authors":"Zhitao He,&nbsp;Guoyi Liu,&nbsp;Yuanjun Liu","doi":"10.1016/j.compstruct.2026.120940","DOIUrl":"10.1016/j.compstruct.2026.120940","url":null,"abstract":"<div><div>Firefighters operating in high-temperature and high-intensity environments are vulnerable to heat stress caused by metabolic heat, sweat accumulation, and deterioration of the clothing microclimate. Aramid fibres are widely used in firefighting suits because of their excellent flame resistance, thermal stability, and mechanical strength; however, their hydrophobicity and low moisture regain restrict liquid sweat transport and water vapour release. This review examines the structural evolution of aramid-based firefighting materials and critically summarises single-component, binary, and multi-component composite systems. It analyses how moisture-wicking fibres, breathable membranes, phase-change materials, air-spacer structures, and aerogels regulate liquid water transport, vapour diffusion, latent heat buffering, and sensible heat insulation, while comparing key indicators including TPP, Rct, and Ret. Existing studies show that these strategies regulate heat and moisture transfer through different mechanisms, but their overall performance depends on interfacial compatibility, pore continuity, structural configuration, and service ageing. Future research should emphasise dynamic heat–moisture testing, full-garment and human-subject evaluation, and performance retention after thermal, hydrothermal, mechanical, and laundering ageing. This paper identifies material- and interface-level design considerations for improving heat and moisture management while preserving thermal protection.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"398 ","pages":"Article 120940"},"PeriodicalIF":7.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149161965","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 high-performance numerical framework for contact problem of layer-substrate structure","authors":"Kai Zhu,&nbsp;Zhen Chen,&nbsp;Haikun Zheng,&nbsp;Guanhao Wang,&nbsp;Weipeng Zhu","doi":"10.1016/j.compstruct.2026.120915","DOIUrl":"10.1016/j.compstruct.2026.120915","url":null,"abstract":"<div><div>Layer–substrate structures are widely used in contact-functional components, and their mechanical reliability is strongly influenced by the contact pressure and the resulting surface and subsurface stress fields. Efficient numerical treatment of layer–substrate contact problems remains challenging because the governing singular integral equations involve Cauchy-type singularities, convolution-type regular terms, and oscillatory Fourier integrals in stress-field calculations. This study investigates the steady-state frictional sliding contact between a rigid cylindrical stamp and a bonded layer–substrate structure. Building on our previously developed Chebyshev–fast Fourier transform (Chebyshev–FFT) framework for contact-pressure determination, the present work extends the framework to the efficient calculation of surface and subsurface stress fields. Fourier-domain influence functions are incorporated to avoid repeated direct numerical evaluation of oscillatory Fourier integrals. A coordinate-transformation procedure is further established to enable consistent comparison between the moving local coordinate system in the theoretical formulation and the global coordinate system used in ABAQUS finite element (FE) simulations. The accuracy of extended framework is validated against FE simulations, and good agreement is obtained for the contact pressure and stress components after appropriate mesh refinement and data-extraction treatment. The method is subsequently applied to investigate stress-field evolution under the normal–tangential decoupling property. For the cases considered, the location of the maximum von Mises stress remains nearly unchanged over an intermediate range of friction coefficients. The present work extends the applicability of the Chebyshev–FFT framework and provides an efficient tool for stress analysis and failure-related assessment of bonded layer–substrate structures.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"398 ","pages":"Article 120915"},"PeriodicalIF":7.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149161967","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 state-of-the-art review on lightweight composite hydraulic cylinders: design, manufacturing and applications","authors":"Tian-Wei Liu,&nbsp;Yao-Xing Shang,&nbsp;Yao Li,&nbsp;Yi-Wei Wang,&nbsp;Xing-Yu Liu,&nbsp;Tian Yu,&nbsp;Zong-Xia Jiao","doi":"10.1016/j.compstruct.2026.120820","DOIUrl":"10.1016/j.compstruct.2026.120820","url":null,"abstract":"<div><div>Hydraulic cylinders act as pivotal actuators in high-end equipment covering aerospace, robotics and construction machinery. Traditional metal hydraulic cylinders have reached a weight-reduction limit, failing to meet escalating lightweight design demands. Carbon Fibre Reinforced Plastics (CFRP), with exceptional specific strength, superior corrosion resistance and high design flexibility, is the optimal candidate for lightweight hydraulic cylinders. This paper comprehensively reviews the research progress, core technologies and engineering applications of CFRP hydraulic cylinders, and analyzes critical technical bottlenecks including bending resistance, sealing friction pair adaptation, oil passage design, detachability and seepage prevention. Based on pressure vessel classification standards, five major structural types and eight subtypes are standardized, with their distinct features and applicable scenarios clarified. The work further details design optimization methods, forming processes and core enabling technologies including dissimilar material joining and anti-leakage solutions. Typical cross-field engineering cases are summarized to verify practical feasibility. Finally, existing challenges in design theory, joining and sealing, process precision and testing systems are concluded, and future directions including multi-field coupled modeling, metal-liner-free fabrication and intelligent integration are prospected, providing a systematic reference for the technical innovation and industrial application of CFRP hydraulic cylinders.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"396 ","pages":"Article 120820"},"PeriodicalIF":7.8,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148936693","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":"Synergistic confinement mechanisms and damage tolerance of concrete hollow bridge pier repaired by FRP-CGM jackets under multi-directional demands","authors":"Qahtan Al-Shami,&nbsp;Mohammed Al-Haaj,&nbsp;Ahmed Al-Olofi,&nbsp;Yousef Sewar,&nbsp;Soria Naji,&nbsp;Mohammed Amer,&nbsp;Ning Li","doi":"10.1016/j.compstruct.2026.120790","DOIUrl":"10.1016/j.compstruct.2026.120790","url":null,"abstract":"<div><div>Post-earthquake repair of bridge piers is typically evaluated under simplified unidirectional loading, although their seismic behavior under realistic multi-directional conditions remains insufficiently explored. In this paper, the seismic repair performance of post-earthquake-damaged hollow concrete bridge piers (HCBPs) is investigated using an improved 6-DOF multi-directional electro-hydraulic testing system. Glass FRP-confined high-strength non-shrink cementitious grout material (CGM) jackets have been proposed as a durable strategy to restore and enhance the structural performance of HCBPs. Large-scale cyclic tests were conducted under simultaneous quadriaxial translational and rotational degrees of freedom, with an amplitude derived from an experimentally validated fiber-based finite element model. The repaired RHCBP recovered 94.9% and 86.3% of the original lateral load capacity, while the resultant lateral load capacity and initial stiffness exceeded the original unidirectional values. The accumulative energy dissipation and resultant flexural capacity increased by 21.6% and 38.2%, respectively. Damage evolution and repair efficiency were quantitatively assessed using the Park–Ang damage index and 3D-DIC based strain mapping. An analysis-oriented cross-section model incorporating constitutive relationships for FRP-confined CGM and a force demand–capacity framework was developed to predict flexural capacity and plastic hinge relocation.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"396 ","pages":"Article 120790"},"PeriodicalIF":7.8,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148936698","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":"Dynamic FE2 multiscale modeling of periodic acoustic black holes using PLA-TPU composites","authors":"M. Nafees,&nbsp;W. Yan,&nbsp;S. El-Borgi,&nbsp;T. Ben Zineb,&nbsp;J.N. Reddy,&nbsp;H. Zahrouni","doi":"10.1016/j.compstruct.2026.120802","DOIUrl":"10.1016/j.compstruct.2026.120802","url":null,"abstract":"<div><div>Acoustic black holes (ABHs) attenuate flexural waves through thickness tapering, but practical implementations are limited by truncated tips and externally bonded damping layers. This study proposes a multi-material ABH in which dissipation is embedded within the tapered region through PLA/TPU composite architectures compatible with multi-material additive manufacturing. The layout combines the stiffness of PLA with the high loss factor of TPU, providing intrinsic damping without post-applied treatments. A dynamic FE² multiscale homogenization framework is adapted to periodic ABH beams by coupling the microscale unit-cell response and micro-inertial effects to macroscopic wave propagation through an enriched one-dimensional continuum with plane-section beam kinematics. Single-leaf and double-leaf periodic ABH configurations are analyzed. Verification against fully resolved FEM simulations for homogeneous, heterogeneous, and ABH media shows close agreement while reducing the computational cost per frequency by more than two orders of magnitude. For the composite beams, the enriched model predicts transmissibility over 100–3000 Hz with mean absolute errors of 0.88 dB and 1.31 dB for the single- and double-leaf cases, respectively. Sensitivity results show that attenuation is governed mainly by the TPU loss factor. Relative to a bonded-neoprene benchmark, the composite gives stronger high-frequency attenuation over 1500–3000 Hz.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"396 ","pages":"Article 120802"},"PeriodicalIF":7.8,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148937052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel arc-star double arrow honeycomb with tunable plateau stresses","authors":"Zhiqiang Zhang,&nbsp;Huiyuan Tian,&nbsp;Peng Xu,&nbsp;Dayong Hu","doi":"10.1016/j.compstruct.2026.120824","DOIUrl":"10.1016/j.compstruct.2026.120824","url":null,"abstract":"<div><div>Multi-plateau auxetic metamaterials have gained increasing attention for their controllable deformation and energy absorption capabilities, yet most existing dual-plateau structures exhibit strong parameter coupling, limiting the independent tuning of plateau stresses. To overcome this limitation, this study proposes an arc-star double-arrow honeycomb (ASAH) that integrates an arc-star configuration, a double-arrow unit, and an internal circular element to realize a multi-stage deformation response with an independently adjustable second plateau stress. The in-plane crushing behavior of ASAH is examined through quasi-static experiments using PA11 specimens and finite element simulations. Results show that ASAH undergoes a two-step deformation process—initial rotational buckling of the arc-star component followed by shrinkage-driven deformation of the double-arrow part. Parametric analyses indicate that the long wall angle <span><math><mi>α</mi></math></span> governs the deformation stages and negative Poisson’s ratio behavior, while the short wall angle <span><math><mi>β</mi></math></span> selectively controls the second plateau stress. The curvature radius <span><math><mi>r</mi></math></span> has minimal influence, and non-uniform wall thickness further enhances tunability and energy absorption. Compared with conventional auxetic honeycombs, ASAH demonstrates higher plateau stresses, improved deformation stability, and superior specific energy absorption, offering a promising strategy for advanced energy-absorbing metamaterials.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"396 ","pages":"Article 120824"},"PeriodicalIF":7.8,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148953461","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":"Constructing spider-web-like PVDF fiber film via electrospinning and resin pre-coating for enhancing interfacial bonding between titanium alloy and CFRP","authors":"Jinheng Zhang,&nbsp;Xueling Liang,&nbsp;Ning Yang,&nbsp;Shuying Shi,&nbsp;Wenjing Xu,&nbsp;Kecheng Zhou,&nbsp;Jing Song,&nbsp;Boris Fedulov,&nbsp;Alexey Fedorenko,&nbsp;Hao Liu,&nbsp;Fei Cheng","doi":"10.1016/j.compstruct.2026.120838","DOIUrl":"10.1016/j.compstruct.2026.120838","url":null,"abstract":"<div><div>Reliable bonding between titanium alloy (Ti) and carbon fiber reinforced polymer (CFRP) is crucial in applications such as aero-engine blades. However, the smooth native oxide film on the Ti substrate surface and the inherent brittleness of the epoxy adhesive layer can readily lead to interfacial debonding failure. This study proposed an integrated surface treatment process combining laser engraving, electrospinning, and resin pre-coating (RPC). Laser engraving was employed to generate regular protrusions and micro-channels on Ti substrate surface, thereby providing mechanical anchoring sites and quasi-vertical infiltration spaces for epoxy resin. Electrospinning was then utilized to deposit a polyvinylidene fluoride (PVDF) fiber web with a controllable areal density (0.2–1.0 g/m²) onto the engraved surface, forming a three-dimensional porous network. Subsequently, the RPC treatment reduced the micro-void defects caused by the intrinsic hydrophobicity of PVDF, ensuring improved resin infiltration and establishing quasi-Z-directional fiber bridging. This approach was designed to construct a spider-web-like PVDF fiber film reinforcement structure at the bonding interface. Surface analysis demonstrated that the combined treatment effectively modulated the surface morphology, roughness, and wettability. Single lap shear tests revealed that the PVDF_0.4-Ti/CFRP composite (laser engraving + 0.4 g/m² PVDF fiber web + RPC) achieved a shear strength of 26.8 MPa, representing a 137.2% increase over the untreated control. Failure mode analysis further revealed that the failure mechanism transitioned from interfacial debonding to CFRP interlaminar tearing, confirming the effectiveness of the PVDF fiber web as an interfacial reinforcement and providing a new pathway for high-performance Ti/CFRP joining.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"396 ","pages":"Article 120838"},"PeriodicalIF":7.8,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148953464","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":"An efficient MITC9 shell element for large-deformation analysis of laminated composite shells","authors":"Bo Liu,&nbsp;Jiaojiao Wu,&nbsp;Ke Xie,&nbsp;Cuiyun Liu","doi":"10.1016/j.compstruct.2026.120818","DOIUrl":"10.1016/j.compstruct.2026.120818","url":null,"abstract":"<div><div>Laminated composite shells are widely used in lightweight structures for their high specific strength and stiffness. However, analyzing their mechanical behavior under large deformations is challenging due to anisotropy, material heterogeneity, and ply-coupling. To address this, we propose a reformulated MITC9 formulation based on geometrically exact shell theory for large-deformation analysis of laminated shells. The Mixed Interpolation of Tensorial Components (MITC) concept is used to construct a nine-node quadrilateral shell element where selected covariant components of the Green-Lagrange strain tensor are independently interpolated at optimally placed tying points and then projected back onto the displacement field. This formulation mitigates both shear and membrane locking even under large-deformation. An orthotropic laminate constitutive model is formulated using equivalent single-layer theory, analytically integrating lamina stiffnesses through the thickness. This yields the classical extensional, coupling, bending, and transverse shear stiffness matrices for arbitrary stacking sequences. The formulation is validated through several benchmark problems involving highly anisotropic laminates and large rotations. In all cases, the MITC9 element accurately reproduces reference load–displacement curves and displacement contours, is locking-free even on relatively coarse meshes, and supports flexible ply sequence modeling. These findings confirm the method’s effectiveness and high accuracy for nonlinear analysis of laminated composite shells.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"396 ","pages":"Article 120818"},"PeriodicalIF":7.8,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148953540","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":"An ESL–HSDT finite element model with a variational exponential thickness function for thermo-mechanical analysis of composite plates","authors":"Aleksandar Radaković,&nbsp;Dragan Čukanović,&nbsp;Gordana Bogdanović,&nbsp;Petar Knežević,&nbsp;Strahinja Milenković,&nbsp;Aleksandar Nešović","doi":"10.1016/j.compstruct.2026.120812","DOIUrl":"10.1016/j.compstruct.2026.120812","url":null,"abstract":"<div><div>This paper presents a novel finite element formulation for the thermo-mechanical bending analysis of orthotropic and laminated composite plates, developed within the framework of an equivalent single-layer higher-order shear deformation theory (ESL–HSDT). In contrast to conventional higher-order models, which rely on predefined polynomial approximations through the thickness and thereby limit the physical accuracy of shear representation, the proposed approach introduces an exponential thickness shape function whose governing parameter is determined through a variational criterion, reducing the arbitrariness associated with predefined through-thickness functions and providing a physically grounded representation of transverse shear deformation.</div><div>By directly linking the kinematic assumptions to the through-thickness distribution of transverse shear deformation, the formulation ensures a smooth and mechanically consistent prediction of deformation and stress distributions without the need for shear correction factors. The model is implemented using a four-node quadrilateral finite element with seven degrees of freedom per node, thus maintaining high computational efficiency while preserving higher-order kinematic accuracy.</div><div>The accuracy and robustness of the proposed formulation are validated through a series of benchmark problems involving orthotropic and laminated plates subjected to both uniform and spatially varying thermal loads, as well as mechanical loading. The results show good agreement with reference solutions from the literature and three-dimensional elasticity theory, with small deviations for global response quantities and larger discrepancies observed only for local transverse shear stresses, which is consistent with the expected behaviour of ESL formulations.</div><div>Compared to classical and layerwise approaches, the proposed model achieves a comparable level of accuracy while significantly reducing computational cost, demonstrating that the adopted thickness function effectively captures interlaminar shear effects within an equivalent single-layer framework.</div><div>The developed formulation provides a robust and computationally efficient tool for the analysis of composite plates under coupled thermo-mechanical loading and establishes a physically motivated basis for the further development of advanced through-thickness modeling strategies.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"396 ","pages":"Article 120812"},"PeriodicalIF":7.8,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148936692","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":"Corrigendum to “An isogeometric formulation for material and geometric nonlinear analysis of functionally graded plates using a Quasi-3D theory” [Compos. Struct. 379 (2026) 119960]","authors":"Renan Melo Barros,&nbsp;Evandro Parente Jr.,&nbsp;Marcelo Silva Medeiros Jr.","doi":"10.1016/j.compstruct.2026.120778","DOIUrl":"10.1016/j.compstruct.2026.120778","url":null,"abstract":"","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"396 ","pages":"Article 120778"},"PeriodicalIF":7.8,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148936788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}