Composite Structures最新文献

Development of an effective modelling method for the mechanical analysis of submarine power cables under bending

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-04-24 DOI: 10.1016/j.compstruct.2025.119198

Pan Fang , Xiao Li , Xiaoli Jiang , Hans Hopman , Yong Bai

{"title":"Development of an effective modelling method for the mechanical analysis of submarine power cables under bending","authors":"Pan Fang , Xiao Li , Xiaoli Jiang , Hans Hopman , Yong Bai","doi":"10.1016/j.compstruct.2025.119198","DOIUrl":"10.1016/j.compstruct.2025.119198","url":null,"abstract":"<div><div>The complex interplay of numerous helical components within submarine power cables (SPCs), especially those with significant contact issues due to initial residual stress, complicates their modelling and limits our understanding of these structures. In this paper we proposed an effective modelling method designed for the local mechanical analysis of SPCs under bending. The method was developed based on three key aspects: (1) constructing appropriate finite elements to reduce the number of elements required; (2) employing contact damping to address the effects of initial residual stress at contact interfaces; and (3) applying periodic boundary conditions on a repeated unit cell (RUC) to reduce the model size. The accuracy of this method was validated through extensive testing on both single-core and three-core SPC samples, and its efficiency was confirmed by comparing these results with those obtained from traditional full-scale models. Following validation, the model was employed to illustrate the local mechanical behaviours of SPCs under bending, both at the overall level and at the component level. This model serves as a powerful tool for cable engineers, offering deeper insights into the internal interplays of SPCs. All relevant codes developed in this paper are freely available at <span><span>https://pan-fang.github.io/Codes/</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"366 ","pages":"Article 119198"},"PeriodicalIF":6.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873905","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}

引用次数: 0

Reinforcing shell elements for fiber-reinforced composites undergoing large deformations and general motion

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-04-22 DOI: 10.1016/j.compstruct.2025.119195

Yanhu Li , Yongjie Lu , Jibo Song , Linao Zhang

{"title":"Reinforcing shell elements for fiber-reinforced composites undergoing large deformations and general motion","authors":"Yanhu Li , Yongjie Lu , Jibo Song , Linao Zhang","doi":"10.1016/j.compstruct.2025.119195","DOIUrl":"10.1016/j.compstruct.2025.119195","url":null,"abstract":"<div><div>Fiber-reinforced composites offer excellent mechanical properties and lightweight advantages in multibody systems. However, their significant anisotropy and geometrical and material nonlinearities present challenges for accurate modeling and simulation. In this paper, two new types of reinforcing shell elements are developed within the Absolute Nodal Coordinate Formulation framework. The first type assumes that each fiber behaves as an Euler beam with only tensile and bending stiffness, making it suitable for simulating reinforcing fibers with arbitrary orientations and nonuniform materials and cross-section areas. The second type employs elastic force formulation based on Kirchhoff–Love theory or continuum mechanics. It is suitable for simulating reinforcing fibers that appear in a layered form with unique orientation, material, and cross-section area. The fibers and matrix are described independently in these new reinforcing elements, coupled through consistent deformation compatibility conditions. This approach allows different material models and element formulations for the fibers and matrix to be used. Furthermore, multiple fibers (or layers) can be embedded within a single reinforcing shell element, providing more accurate representations of the actual physical structure. The effectiveness of the developed reinforcing elements is validated through several benchmark problems. Numerical results demonstrate that both types of reinforcing shell elements are locking-free and can automatically capture the reinforcing effects of the fibers and the coupled deformation modes. This investigation enriches the element library of the Absolute Nodal Coordinate Formulation and provides an effective tool for the accurate simulation and optimal design of fiber-reinforced composites in multibody systems.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"366 ","pages":"Article 119195"},"PeriodicalIF":6.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867943","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}

引用次数: 0

Design and analysis of the thick-wall cylindrical origami metamaterials based on tessellation principles

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-04-22 DOI: 10.1016/j.compstruct.2025.119182

Zihang Ma , Keyao Song , Jaehyung Ju , Yongbin Wang , He Jia , Xiang Zhou

{"title":"Design and analysis of the thick-wall cylindrical origami metamaterials based on tessellation principles","authors":"Zihang Ma , Keyao Song , Jaehyung Ju , Yongbin Wang , He Jia , Xiang Zhou","doi":"10.1016/j.compstruct.2025.119182","DOIUrl":"10.1016/j.compstruct.2025.119182","url":null,"abstract":"<div><div>Origami structures with embedded creases provide predesigned deformed paths that could enhance the mechanical properties upon loading. Nature has provided hints from the cross-section of the hexagon-filled tessellation pattern of the bamboo and the porous protective layer of the pomelo peel, but the design method of the mechanical metamaterials that combines both energy absorption and protection capacities remains unknown. Inspired by this, the novel design method of the thick-wall cylindrical origami-based metamaterials (TCOM) derived from different tessellation patterns is provided, and both capacities are studied under two loading cases. The main parameters, such as layer heights ranging from <span><math><mrow><mn>5</mn><mspace></mspace><mi>mm</mi></mrow></math></span> to <span><math><mrow><mn>10</mn><mspace></mspace><mi>mm</mi></mrow></math></span> and rotation angles of 1°, 3°, and 5°, are varied to investigate their influence on these two capacities. The results show that these two capacities are generally incompatible, and the mixed polygon tessellation patterns stand out. We found that the specific energy absorption (SEA) capacity could be inversely programmable from the parametric study results, hence an optimization method based on the Gaussian Process Regression is provided as a design tool by a simple input of a user-preferred SEA value, hence providing a programmable energy-absorption capacity design tool for the future applications of the cylindrical origami-based mechanical metamaterials. The research here sheds light on the effects of tessellation design principles on origami-based mechanical metamaterial design.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"366 ","pages":"Article 119182"},"PeriodicalIF":6.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876951","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}

引用次数: 0

Quasi-static compression and impact resistances of novel re-entrant chiral hybrid honeycomb structures

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-04-21 DOI: 10.1016/j.compstruct.2025.119206

Z.H. Xu , Y.J. Cui , K.F. Wang , B.L. Wang , B. Wang

{"title":"Quasi-static compression and impact resistances of novel re-entrant chiral hybrid honeycomb structures","authors":"Z.H. Xu , Y.J. Cui , K.F. Wang , B.L. Wang , B. Wang","doi":"10.1016/j.compstruct.2025.119206","DOIUrl":"10.1016/j.compstruct.2025.119206","url":null,"abstract":"<div><div>Negative Poisson’s ratio metamaterials have excellent energy absorption performance and have been widely used in impact protection structures. The re-entrant hexagonal honeycomb (TRH) is one typical and widely used metamaterial. However, the TRH has drawbacks of insufficient stiffness and unstable deformation. This paper combines the traditional re-entrant cell with a chiral cell to form re-entrant chiral hybrid cells (RCEs) to further improve the mechanical properties of TRH. By arranging the intercellular connectors and RCEs with different patterns, four novel negative Poisson’s ratio honeycomb structures (RCH-1, RCH-2, RCH-3 and RCH-4) are proposed. The in-plane quasi-static compression characteristic of TRH and RCH-4 are investigated through experiments and simulations. Effects of the honeycomb type, the cell wall’s thickness, the chiral ring’s radius, the impact direction and velocity on impact resistance are evaluated. It’s found that the introduction of chiral ring not only has a supportive effect on the inclined cell walls also enhances the deformation stability and load-bearing capacity of RCEs. Reducing the radius of chiral ring within a certain range can enhance the impact resistance of the proposed honeycomb structures. Properly increasing the cell wall’s thickness can improve the impact resistance of honeycomb structures. It is observed that the RCH-4 has the highest plateau stress, elastic modulus, specific energy absorption and the most stable deformation pattern under vertical impact. In the case of lateral impact, the RCH-2 has the highest specific energy absorption. At different impact velocities, the specific energy absorptions of the proposed honeycomb structures are higher than that of TRH.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"366 ","pages":"Article 119206"},"PeriodicalIF":6.3,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867944","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}

引用次数: 0

Stress-related multi-material structures topology optimization with gradient interfaces

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-04-17 DOI: 10.1016/j.compstruct.2025.119176

Xiaomei Huang, Yun Chen, Liang Hou, Congmin Miao, Yuan Li

{"title":"Stress-related multi-material structures topology optimization with gradient interfaces","authors":"Xiaomei Huang, Yun Chen, Liang Hou, Congmin Miao, Yuan Li","doi":"10.1016/j.compstruct.2025.119176","DOIUrl":"10.1016/j.compstruct.2025.119176","url":null,"abstract":"<div><div>Aerospace components, such as turbine disks, endure complex loads and extreme thermal conditions. Stress-related multi-material topology optimization (MMTO) allows for the superior performance design of these components. Additionally, most studies on MMTO focus on continuous or single-gradient interfaces, multi-gradient design remains largely unexplored. This study proposes a stress minimization topology optimization method for multi-material structures with gradient interfaces. A multi-gradient material interpolation is established based on the standard solid isotropic material with penalization (SIMP) method and piecewise Heaviside projection, and the quantity and properties of gradient materials are defined by the gradient ratios of parent materials. Notably, the proposed method requires only a single set of density variables. The global stress is evaluated using the p-norm function, and element sensitivity is calculated with the adjoint method. Design variables are filtered. Turbine disk and L-bracket examples are presented to validate the effectiveness of the proposed approach. The results demonstrate that multi-material structures with gradient interfaces can be effectively described and optimized. The quantity and mechanical properties of gradient materials can be precisely defined. The maximum stress in single-gradient and double-gradient structures is lower than that in non-gradient structures, indicating that topology design with gradient interfaces enhances structural strength. The proposed method effectively reduces the stress level by distributing multi-gradient materials across multi-material interfaces.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"365 ","pages":"Article 119176"},"PeriodicalIF":6.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847755","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}

引用次数: 0

Exact solutions for the linear hardening elastoplastic model in functionally graded spherical shell

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-04-17 DOI: 10.1016/j.compstruct.2025.119208

Jun Xie , Xiaofan Gou , Pengpeng Shi

{"title":"Exact solutions for the linear hardening elastoplastic model in functionally graded spherical shell","authors":"Jun Xie , Xiaofan Gou , Pengpeng Shi","doi":"10.1016/j.compstruct.2025.119208","DOIUrl":"10.1016/j.compstruct.2025.119208","url":null,"abstract":"<div><div>As functionally graded materials (FGMs) technology advances, there has been a growing emphasis on the mechanical analysis of FGMs structures. Exceeding the yield strength in FGMs structures often leads to irreversible plastic deformation in localized regions under applied loads. An analysis of the linear hardening elastoplastic model is necessary to assess accurately the load-carrying capacity of these structures. It is assumed that the elastic modulus of FGMs spherical shell varies with the thickness distribution of the structure according to a power function. This paper provides the exact solutions for the linear hardening elastoplastic model in the FGMs spherical shell under mechanical loads, including purely elastic, partially plastic, and fully plastic deformation states. The elastoplastic theory is employed to analyze the linear hardening elastoplastic model, and each deformation state is thoroughly analyzed. A significant contribution of this research is the presentation of comprehensive exact solutions for the linear hardening elastoplastic model in FGMs spherical shell, addressing all deformation regions. The findings demonstrate that the radial variation in material properties significantly influences the elastoplastic model analysis of the FGMs spherical shell. These conclusions are expected to aid in the design of FGMs spherical shells to mitigate yielding under high circumferential stress.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"366 ","pages":"Article 119208"},"PeriodicalIF":6.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859338","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}

引用次数: 0

Energy absorber inspired by spider webs

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-04-15 DOI: 10.1016/j.compstruct.2025.119160

Koray Yavuz , Seymur Jahangirov , Recep M. Gorguluarslan

引用次数: 0

Ultra-high temperature mechanical behavior and microstructural evolution of needle-punched carbon/carbon composites under time-varying thermo-mechanical coupling conditions

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-04-15 DOI: 10.1016/j.compstruct.2025.119192

Boyi Wang, Songhe Meng, Bo Gao, Kunjie Wang, Chenghai Xu

{"title":"Ultra-high temperature mechanical behavior and microstructural evolution of needle-punched carbon/carbon composites under time-varying thermo-mechanical coupling conditions","authors":"Boyi Wang, Songhe Meng, Bo Gao, Kunjie Wang, Chenghai Xu","doi":"10.1016/j.compstruct.2025.119192","DOIUrl":"10.1016/j.compstruct.2025.119192","url":null,"abstract":"<div><div>Carbon/carbon (C/C) composites are extensively employed in the thermal protection systems of hypersonic vehicles, and the precise acquisition of critical process information is vital for the reliable design of such vehicles. Consequently, this research introduces a high-temperature repeated loading testing protocol for needle-punched C/C composites, aimed at characterizing the mechanical behavior of re-entry vehicles in intricate thermal–mechanical coupling environments. Initially, an ultra-high-temperature speckle pattern was prepared using plasma spraying and laser etching techniques, which is suitable for the temperature range of this study (room temperature to 2000 °C). Subsequently, under time-varying temperature and load conditions, the local strain field and tensile properties were investigated. In the single-loading test, at 1500 °C, the stress–strain curve slope decreased by up to 58 %. In the cyclic loading test, at 2000 °C, the slope increased by up to 46 % with the number of cycles, while the specimen strength decreased by up to 27.1 % compared to the standard test. By examining fracture morphology and internal structure at both macroscopic and microscopic scales, the study elucidated how interfacial performance and the level of graphitization contribute to the tensile behavior. The results indicate that as the number of loading cycles increases, the stress–strain curve slope is primarily influenced by interfacial properties and carbon fiber graphitization, with each playing a dominant role at different loading stages. Additionally, tensile strength decreases with the rise in loading cycles, positively correlating with interfacial performance and inversely with carbon fiber graphitization.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"365 ","pages":"Article 119192"},"PeriodicalIF":6.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847754","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}

引用次数: 0

Multi-body dynamic transfer matrix modeling and validation for full-scale wind turbine blades in biaxial fatigue testing systems

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-04-15 DOI: 10.1016/j.compstruct.2025.119205

Yi Ma, Aiguo Zhou, Yutian Zhu, Jinlei Shi, Shiwen Zhao, Jianzhong Wu

{"title":"Multi-body dynamic transfer matrix modeling and validation for full-scale wind turbine blades in biaxial fatigue testing systems","authors":"Yi Ma, Aiguo Zhou, Yutian Zhu, Jinlei Shi, Shiwen Zhao, Jianzhong Wu","doi":"10.1016/j.compstruct.2025.119205","DOIUrl":"10.1016/j.compstruct.2025.119205","url":null,"abstract":"<div><div>Continuous advancements in wind turbine technology, driven by the pursuit of increased power generation and extended blade dimensions, have heightened the demand for reliable biaxial fatigue testing of full-scale blades. Such testing is critical for evaluating long-term structural integrity under realistic loading conditions. This study presents a novel multi-body dynamic transfer matrix methodology to address the modeling and analysis challenges inherent in full-scale biaxial testing systems for large wind turbine blades. The proposed approach discretizes the heterogeneous blade structure into beam elements and employs transfer matrix theory to derive system matrices encompassing spatial beam dynamics, mass distribution, damping characteristics, and elastic properties. Through the systematic formulation of the dynamic transfer equations and subsequent numerical solutions of the characteristic equations, this method enables comprehensive vibration analysis of the multi-body test system. Comparative validation through finite element simulations and experimental measurements demonstrates that the equivalent model achieves prediction discrepancies below 7% across multiple blade configurations. The developed framework provides an effective multibody transfer matrix model for investigating vibration characteristics and bending moment distributions in blade fatigue testing systems, establishing theoretical foundations for dynamic characterization and optimized design of full-scale biaxial fatigue testing platforms.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"365 ","pages":"Article 119205"},"PeriodicalIF":6.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838928","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}

引用次数: 0

Fatigue response and fracture mechanisms of polymer matrix composites under dominance of the self-heating effect

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-04-14 DOI: 10.1016/j.compstruct.2025.119207

Andrzej Katunin , Tomasz Rogala , Jafar Amraei , Dominik Wachla , Marcin Bilewicz , Łukasz Krzemiński , Paulo N.B. Reis

{"title":"Fatigue response and fracture mechanisms of polymer matrix composites under dominance of the self-heating effect","authors":"Andrzej Katunin , Tomasz Rogala , Jafar Amraei , Dominik Wachla , Marcin Bilewicz , Łukasz Krzemiński , Paulo N.B. Reis","doi":"10.1016/j.compstruct.2025.119207","DOIUrl":"10.1016/j.compstruct.2025.119207","url":null,"abstract":"<div><div>The self-heating effect in polymer matrix composites (PMCs) can be dangerous due to dominance of the fatigue process and its significant acceleration. Therefore, investigation of its influence on structural behavior and thermomechanical response is crucial for safe and reliable operation of PMCs. Due to lack of standardization of criteria of determination of fatigue properties, such as fatigue limit, during various modes of fatigue loading, the investigation of fatigue response attracts special attention. In some loading scenarios when the process is dominated either by mechanical fatigue degradation or self-heating effect, the classical approaches to determine fatigue limit may fail. This implies the need to establish new criteria for fatigue limit determination, also considering stress relaxation. In this study, the authors demonstrated that fatigue behavior is represented by bi-linear <em>S</em>-<em>N</em> curve, which reveals different thermomechanical responses and damage mechanisms under specific loading conditions. Moreover, it was demonstrated the existence of a transition point on the intersection of these <em>S</em>-<em>N</em> curves, where dominance of self-heating effect and mechanical degradation was clearly noticeable. The fatigue process for both mentioned regimes was characterized in terms of self-heating temperature evolution and acoustic emission, which was validated by microscopic analysis and X-ray computed tomography after fatigue failure.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"365 ","pages":"Article 119207"},"PeriodicalIF":6.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834419","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}

引用次数: 0