Composite Structures最新文献

{"title":"Enriched embedded-fiber crack-bridging element for XFEM fracture and pullout analysis of composites","authors":"Hamid Bayesteh ,&nbsp;Ahmad Jafari ,&nbsp;Soheil Mohammadi","doi":"10.1016/j.compstruct.2026.120118","DOIUrl":"10.1016/j.compstruct.2026.120118","url":null,"abstract":"<div><div>Embedded fiber elements are commonly employed in the finite element formulation to facilitate modeling of fibers in a matrix, without conforming fibers to matrix elements. This study aims to integrate the concept of embedded fiber element into the extended finite element (XFEM) framework to account for fiber bridging across crack surfaces. To this end, the XFEM concept has been expanded to enrich embedded fiber elements using the Heaviside function, alongside cracked matrix elements. Additionally, slipping between fiber and matrix is considered by supplementary degrees of freedom. The formulation also incorporates the pullout effects through the implementation of softening behavior between fiber and matrix. Validation of the proposed method is conducted against the available reference solutions. Its performance is further examined through a variety of single and multi-scale problems. The results demonstrate the mesh-independency of the proposed formulation across arbitrary mesh sizes and configurations, obviating the need for conformity between fiber and matrix elements which is a significant advancement for modeling fiber bridging in crack problems. Moreover, the developed formulation is capable of considering bi-direction or randomly distributed fibers with arbitrary orientations relative to the crack line. Furthermore, the proposed method is successfully employed in multsicale modeling of fiber composites.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"383 ","pages":"Article 120118"},"PeriodicalIF":7.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186779","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":"Extended multiscale multi-patch isogeometric analysis for two-dimensional periodic piezoelectric structures based on penalty function method","authors":"Haozhi Li ,&nbsp;Zhaowei Liu ,&nbsp;Tiantang Yu ,&nbsp;Leilei Chen","doi":"10.1016/j.compstruct.2026.120142","DOIUrl":"10.1016/j.compstruct.2026.120142","url":null,"abstract":"<div><div>High-fidelity analysis of periodic piezoelectric structures is computationally prohibitive due to the complex electromechanical coupling and periodic microstructural heterogeneity. Isogeometric analysis (IGA) using single-patch modeling cannot efficiently handle complex topologies such as honeycombs or lattice structures. To overcome these challenges, this paper proposes an extended multiscale multi-patch isogeometric analysis (EMs-MPIGA) based on the penalty method for two-dimensional periodic piezoelectric structures. The non-uniform rational B-spline (NURBS) basis functions are employed for geometrical description and mechanical simulation of unit cells to obtain the numerical heterogeneity basis functions of piezoelectric problems. The equivalent matrices, including the stiffness, piezoelectric coupling, and dielectric system matrices of unit cells, are constructed using the computed heterogeneity basis functions. Additionally, downscaling computation is applied to obtain the displacement, electric potential, and von Mises stress of the unit cells. The accuracy, reliability, and robustness of the proposed method are validated via several multiscale simulations.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"383 ","pages":"Article 120142"},"PeriodicalIF":7.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186771","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":"Research progress and applications of high-performance fiber ropes in infrastructure: A systematic review","authors":"Bin Liu ,&nbsp;Yue Wang ,&nbsp;Ruixin Jia ,&nbsp;Yingxuan Zhang ,&nbsp;Shanchang Xu ,&nbsp;Angelo Aloisio ,&nbsp;Yue Liu","doi":"10.1016/j.compstruct.2026.120370","DOIUrl":"10.1016/j.compstruct.2026.120370","url":null,"abstract":"<div><div>With the growing demand for lightweight and high-strength designs in marine engineering and civil infrastructure, high-performance synthetic fiber ropes have emerged as promising alternatives to conventional load-bearing components. Owing to their low density, high specific strength, and excellent flexibility, these ropes offer significant potential in next-generation structural systems. However, most existing studies focus on either single-fiber behavior or specific rope configurations, lacking a systematic, cross-material, and cross-structure synthesis. This review aims to provide a comprehensive overview of recent advances in high-performance fiber ropes, encompassing their material characteristics, structural design, mechanical behavior, and civil engineering applications. It highlights the typical configurations, mechanical responses, and functional scenarios of commonly used ropes, while comparing the intrinsic properties of various high-performance fibers and their performance under tensile, creep, and fatigue tests. Furthermore, the paper summarizes the characteristics and applicability of “yarn-level” and “fiber-level” modeling approaches in numerical simulations and discusses the practical uses of fiber ropes in infrastructure systems. Finally, the main challenges and potential research directions are discussed to provide insights for future studies in this evolving field.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"388 ","pages":"Article 120370"},"PeriodicalIF":7.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147804745","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":"Accurate and efficient modeling of circular elastic inclusions in plane elastic heterogeneous materials without interface integration","authors":"Ze She ,&nbsp;Liang Chen ,&nbsp;Fan Yang ,&nbsp;Keyong Wang ,&nbsp;Han Han","doi":"10.1016/j.compstruct.2026.120353","DOIUrl":"10.1016/j.compstruct.2026.120353","url":null,"abstract":"<div><div>Modeling elastic fields in materials with inclusions is pivotal to understanding the mechanical behavior of composites, yet conventional finite element formulations often suffer from high computational cost when dealing with complex inclusion geometries or fine stress concentrations. To address this challenge, we develop a hybrid Trefftz finite element method (HT-FEM) based on a single-functional formulation. The method assumes two independent displacement fields, one within the element domain and the other along its boundary, and couples them through a modified functional with the matrix–inclusion continuity conditions inherently satisfied by the intra-element field. This strategy avoids the need for interface integration, while preserving displacement and stress continuity across matrix–inclusion boundaries. Numerical studies demonstrate that the proposed method captures inclusion-induced local stress concentrations with high fidelity even on coarse meshes, and significantly reduces degrees of freedom and computational time compared with conventional finite element method (FEM). Further analysis reveals an intrinsic balance between the number of Gauss integration points and the admissible number of T-complete functions, and shows that increasing the number of polygonal element edges can further increase the accuracy. Benchmark cases with randomly distributed inclusions or voids in various domains and extreme inclusion configurations confirm the formulation’s robustness and efficiency.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"388 ","pages":"Article 120353"},"PeriodicalIF":7.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147804806","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":"Failure behavior of honeycomb sandwich structural batteries under three-point bending","authors":"Hanmo Zhou ,&nbsp;Ruiyuan Zhang ,&nbsp;Yilin Peng ,&nbsp;Qingqing Wang ,&nbsp;Xu Liu ,&nbsp;Haowei Wu ,&nbsp;Anchalee Duongthipthewa ,&nbsp;Limin Zhou","doi":"10.1016/j.compstruct.2026.120117","DOIUrl":"10.1016/j.compstruct.2026.120117","url":null,"abstract":"<div><div>Structural batteries that integrate energy storage and load-bearing functions are critical for lightweight design, yet existing designs using foam cores suffer from high density (≥100 kg/m³). This study introduces ultralight honeycomb sandwich structural batteries (HSSBs) using Nomex cores (48 kg/m³) embedded with lithium-ion polymer cells and systematically investigates their failure behavior under three-point bending. Three distinct failure modes were identified: global bending (Mode I) for thin cores (3 mm), core shear fracturing (Mode II) for thick rectangular configurations, and face wrinkling (Mode III) for thick annular configurations. Compared to baseline panels, HSSBs exhibit 20% average strength reduction but maintain remarkable electrochemical robustness with &gt; 93% capacity retention after structural failure and negligible degradation during 10,000 bending cycles. A core thickness of 6 mm achieves optimal multifunctional efficiency (<span><math><mrow><msub><mi>η</mi><mtext>multi</mtext></msub></mrow></math></span> = 1.43), balancing 11.87 GPa bending modulus with 121.82 Wh/kg energy density. Thicker configurations exhibit progressive failure, sustaining approximately 80% of peak load post-failure—a valuable safety characteristic. Validated finite element models and a UAV cargo box demonstration establish a design framework for application-specific optimization of these high-performance structural batteries.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"383 ","pages":"Article 120117"},"PeriodicalIF":7.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186447","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 novel self-supporting hybrid structure combining hollow-strut lattices and plate lattices to break the tradeoff between different mechanical properties","authors":"Jiawen Li ,&nbsp;Wei Yu ,&nbsp;Peng Wang ,&nbsp;Mai Zhang ,&nbsp;Yu Bai ,&nbsp;Hai Hao","doi":"10.1016/j.compstruct.2026.120131","DOIUrl":"10.1016/j.compstruct.2026.120131","url":null,"abstract":"<div><div>Mechanical metamaterials (MMs) achieve tailorable mechanical properties through rational structural design. However, limited by single structures and the constitutive relation of base materials, a trade-off often arises in MMs between a high stress level and a stable stress response. To overcome this tradeoff, based on the mechanical performance of different lattices, a novel hybrid lattice with plate and hollow strut (HLPH) design strategy is proposed. Using AlSi10Mg as the base material, four preliminary HLPHs are fabricated via selective laser melting (SLM), and their manufacturability is evaluated. Experiments and simulations are conducted to investigate their static mechanical behavior. The results demonstrate that only the configuration combining a body-centered cubic (BCC) plate lattice with a hybrid simple cubic (SC) and face-centered cubic (FCC) hollow strut lattice preliminarily achieves the objective. Its plateau stress and energy absorption reached 121.60 MPa and 58.37J cm⁻³, respectively. Subsequently, three strategies are employed to optimize, resulting in a maximum increase in plateau stress and energy absorption of 31.76% and 48.23%, which outperform many comparable MMs. Overall, this work overcomes the trade-off between mechanical behaviors through reasonable structural design. It demonstrates the enormous potential of configuration design for achieving the integration of multiple mechanical properties.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"383 ","pages":"Article 120131"},"PeriodicalIF":7.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186781","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":"Mechanical properties and energy absorption characteristics evaluation of negative Poisson’s ratio mechanical metamaterials: A literature review","authors":"Chuan Huang,&nbsp;Naiming Wu,&nbsp;Jize Mao,&nbsp;Hongguang Wang","doi":"10.1016/j.compstruct.2026.120390","DOIUrl":"10.1016/j.compstruct.2026.120390","url":null,"abstract":"<div><div>Mechanical metamaterials are innovative artificial materials that exhibit unconventional mechanical properties not typically found in natural materials. Due to their ability to exhibit expansion (or contraction) under tensile (or compressive) conditions, they have become highly regarded and potentially transformative materials in fields such as aerospace, biomedical engineering, and smart structures. This paper reviews the recent research progress (over the past three years) on negative Poisson’s ratio (NPR) mechanical metamaterials. It also provides a detailed discussion of their development history, current applications, and future potential. First, the paper introduces the fabrication processes and mechanical properties of NPR mechanical metamaterials. Subsequently, based on a review of existing literature, this paper provides a comprehensive overview and discussion of the research and development of 2D and 3D NPR mechanical metamaterials, aiming to gain a deeper understanding of the various mechanical characteristics of these metamaterials. Additionally, the geometric parameters of NPR mechanical metamaterials affect the mechanical performance and energy absorption characteristics are analyzed systematically. This review aims to highlight the broad application prospects of NPR mechanical metamaterials across various fields and provide a theoretical foundation and reference for future research and design methods in this area.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"388 ","pages":"Article 120390"},"PeriodicalIF":7.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147804743","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":"Thermo-mechanical behavior and failure analysis of composite pipes under multi-field coupled loading for directional drilling applications","authors":"Tianyu Wang ,&nbsp;Chengyu Li ,&nbsp;Yapeng Li ,&nbsp;Mou Tang ,&nbsp;Tao Wang ,&nbsp;Shuyue Tong ,&nbsp;Hongneng Cai ,&nbsp;Xinggao Min ,&nbsp;Oleksandr Menshykov ,&nbsp;Marina Menshykova","doi":"10.1016/j.compstruct.2026.120393","DOIUrl":"10.1016/j.compstruct.2026.120393","url":null,"abstract":"<div><div>Composite drill pipes offer significant advantages over conventional steel counterparts for directional drilling applications, yet their mechanical behavior under multi-field coupled loading conditions remains insufficiently understood. This study presents a semi-analytical framework based on three-dimensional elasticity theory for predicting the stress distribution and failure behavior of composite drill pipes subjected to combined thermal gradients, internal pressure, axial force, torque, and bending curvature. The governing equations are solved analytically with failure assessment performed using the criteria. The semi-analytical methodology demonstrates excellent agreement with finite element verification while providing high computational efficiency. Parametric investigations encompass four stacking configurations under external temperatures ranging from 40℃ to 130℃ and dogleg severities from 10°/50ft to 10°/200ft. The results reveal that the [±75°/±45°] configuration demonstrates superior performance. Maximum allowable curvature capacity maps are generated through analysis across the full range of winding angle combinations for both pushing and pulling operational phases. A notable finding is the opposite temperature sensitivity between phases: pushing capacity decreases by 13% from 40℃ to 130℃, while pulling capacity increases by 16% due to beneficial thermal stress interactions and material properties. This disparity produces a temperature-dependent crossover in the limiting condition at approximately 70℃. Compared with conventional steel drill pipes, the composite alternatives improve in curvature capacity, enabled by the lower elastic modulus and tailorable anisotropic properties. Combined with weight reduction, these findings establish composite drill pipes as technically superior alternatives for ultra-deep directional drilling applications. The developed methodology provides a computationally efficient design tool enabling rapid parametric optimization for engineering applications.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"388 ","pages":"Article 120393"},"PeriodicalIF":7.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147804808","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":"Rve-based isogeometric analysis of thermo-electro-mechanical band gaps in piezoelectric composite phononic crystals","authors":"He Zhu ,&nbsp;Liming Zhou ,&nbsp;Xiaolin Li","doi":"10.1016/j.compstruct.2026.120392","DOIUrl":"10.1016/j.compstruct.2026.120392","url":null,"abstract":"<div><div>Piezoelectric composite phononic crystals provide tunable attenuation of elastic waves, but accurate band gap prediction remains difficult because of thermo-electro-mechanical coupling and multiscale heterogeneity. This work develops representative volume element-based thermo-electro-mechanical isogeometric analysis (RVE-TEMIGA) for multiscale band gap analysis of piezoelectric composite phononic crystals. At the microscale, a 1–3 piezoelectric composite is homogenized using an RVE with periodic boundary conditions, coupled thermo-electro-mechanical constitutive relations, and isogeometric analysis to obtain effective properties. At the macroscale, the homogenized properties are introduced into a dynamic isogeometric formulation, and frequency domain transmissibility analysis is used to identify band gap behavior in finite structures. Two- and three-dimensional examples verify the accuracy and efficiency of the proposed method. Compared with the finite element method, RVE-TEMIGA achieves higher accuracy in free vibration analysis. Under comparable degrees of freedom, the proposed method predicts band gap locations and widths more accurately and maintains high accuracy for curved boundaries and high frequency responses. Temperature alters band gap location and width, whereas increasing fiber volume fraction broadens the band gaps. These results indicate that RVE-TEMIGA is an accurate and efficient multiscale approach for the design and analysis of piezoelectric composite phononic crystals under thermo-electro-mechanical coupling.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"388 ","pages":"Article 120392"},"PeriodicalIF":7.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147804885","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":"3D continuum‑coupled Pasternak beam model for shear connectors in composite structures","authors":"Hao Meng ,&nbsp;Huan Wang ,&nbsp;Guannan Wang ,&nbsp;Rongqiao Xu","doi":"10.1016/j.compstruct.2026.120133","DOIUrl":"10.1016/j.compstruct.2026.120133","url":null,"abstract":"<div><div>Shear connectors govern interface slip, load transfer, and durability in steel–concrete composite members. Existing approaches largely rely on test-fitted empirical formulas, and limited theoretical studies remain early-stage and fragmented. This study establishes a three-dimensional continuum-coupled Pasternak beam model within a variational energy framework. Analytical expressions are given for the displacement fields and derived quantities that characterize the shear-transfer mechanism for connectors. Two key parameters, the connector’s effective deformation height (<span><math><mrow><msub><mi>D</mi><mi>s</mi></msub></mrow></math></span>) and the concrete’s effective action depth (<span><math><mrow><msub><mi>D</mi><mi>c</mi></msub></mrow></math></span>) are introduced and analytically evaluated. These parameters determine rational connector height and multi-row spacing. Twenty-four push-out tests are designed and conducted, and predictions agree with measurements with MAPE of 6.8 % for the initial shear stiffness <span><math><mrow><msub><mi>K</mi><mn>0</mn></msub></mrow></math></span> and 9.3 % for <span><math><mrow><msub><mi>D</mi><mi>s</mi></msub></mrow></math></span>, and <span><math><mrow><msup><mrow><mi>R</mi></mrow><mn>2</mn></msup><mo>=</mo><mn>0.90</mn><mspace></mspace><mn>0.91</mn></mrow></math></span>. Parametric analyses clarify the effects of concrete elastic modulus, connector diameter, and steel elastic modulus on the initial shear stiffness and effective deformation height, and comparisons with three existing theoretical models show advantages in accuracy and interpretability. By eliminating empirically fitted foundation coefficients and directly resolving the concrete displacement field, the method provides mechanism-based and transferable guidance for the rational analysis and design of shear connectors in composite structural systems.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"383 ","pages":"Article 120133"},"PeriodicalIF":7.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186768","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}