Thin-Walled Structures最新文献_第5页

Broadband, wide-angle, and high-temperature microwave absorbers enabled by 3D-printed torsion SiC metamaterials 3d打印扭转SiC超材料实现宽带、广角和高温微波吸收器

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-04-14 DOI: 10.1016/j.tws.2025.113315

Lijun Yang , Long Wang , Liuying Wang , Gu Liu , Wenhao Wang , Baoguo Zhang , Xiujian Tang

{"title":"Broadband, wide-angle, and high-temperature microwave absorbers enabled by 3D-printed torsion SiC metamaterials","authors":"Lijun Yang , Long Wang , Liuying Wang , Gu Liu , Wenhao Wang , Baoguo Zhang , Xiujian Tang","doi":"10.1016/j.tws.2025.113315","DOIUrl":"10.1016/j.tws.2025.113315","url":null,"abstract":"<div><div>The design and fabrication of absorbers exhibiting ultra-broadband and wide-angle absorption characteristics represent a viable strategy for enhancing the radar evasion capabilities of hypersonic vehicles. However, traditional microwave absorbing materials are difficult to meet the application requirements of hypersonic vehicles due to their strong angular domain sensitivity, insufficient stealth frequency band, and limited performance under elevated temperature conditions. This study presents a straightforward approach to the development of a 3D-printed ceramic-based microwave absorber. Utilizing powder extrusion printing (PEP) technology, we fabricated a torsion metamaterial absorber composed of silicon carbide (SiC). The structural design integrates the impedance gradient properties of a stepped configuration, the multi-surface attributes of a triply periodic minimal surface structure, and the porous characteristics inherent to a honeycomb structure. The absorber benefits from significant interfacial loss and dipole polarization resulting from the diverse phases within SiC ceramics, in conjunction with the innovative design that merges gradient-variable impedance with a multi-scale loss mechanism of the twisted body. Consequently, the absorber achieves an effective absorption bandwidth (EAB, RL < -10 dB) of 32.87 GHz, a RLmin of -57.15 dB, and demonstrates insensitivity across a wide angular range of 0° to 60°, while also exhibiting remarkable absorption stability at elevated temperatures. These findings offer valuable insights for the advancement of novel high-temperature microwave absorbing materials characterized by extensive absorption frequency ranges and wide-angle performance.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"214 ","pages":"Article 113315"},"PeriodicalIF":5.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A universal parameterized absolute nodal coordinate formulation for arbitrarily shaped shells 任意形状壳的通用参数化绝对节点坐标公式

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-04-14 DOI: 10.1016/j.tws.2025.113307

Yipeng Liu, Wei Fan, Hui Ren, Zheng Chen

{"title":"A universal parameterized absolute nodal coordinate formulation for arbitrarily shaped shells","authors":"Yipeng Liu, Wei Fan, Hui Ren, Zheng Chen","doi":"10.1016/j.tws.2025.113307","DOIUrl":"10.1016/j.tws.2025.113307","url":null,"abstract":"<div><div>Absolute node coordinate formulation (ANCF) has been widely applied to the large deformation and nonlinear dynamic problems of plate/shell structures. Nevertheless, the complex geometries of plate/shell structures and the higher-order discontinuity of gradients have hindered the widespread engineering application of higher-order ANCF elements. In this work, a parameterized ANCF approach tailored for plate/shell structures with complex geometries and multi-connected features is developed, providing a new solution for nonlinear dynamic simulation of complex plate/shell structures in engineering applications. The boundary first flattening (BFF) is used to map complex plate/shell structures onto specified planar domains and achieve global parameterization. Within the parameterized plane, the B-spline interpolation techniques are utilized to construct higher-order gradient vectors for such structures. Finally, various higher-order ANCF elements are applied within the parameterized plane to accurately simulate the nonlinear dynamics of complex plate/shell structures. The proposed method effectively solves the problem of higher-order gradient discontinuity, enabling the application of higher-order ANCF elements to the nonlinear dynamics of plate/shell structures with complex geometries and multi-connected features, thereby expanding ANCF's application scope. On the other hand, the global parameterization of plate/shell structures and higher-order gradient construction are computed only once prior to simulation, which features low offline costs and introduces no additional computational overhead for static/dynamic simulations. Furthermore, owing to its enhanced continuity and utilization of higher-order ANCF elements, this method ensures computational accuracy with fewer mesh elements, reducing computational costs while improving efficiency. The efficacy and reliability of the proposed method are verified by modal frequency comparison, static equilibrium and dynamic response.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113307"},"PeriodicalIF":5.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of center-hung scoreboard on seismic responses of suspendome structure 中悬记分板对悬索结构地震反应的影响

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-04-12 DOI: 10.1016/j.tws.2025.113313

Zhen Lu , Xiongyan Li , Suduo Xue , Yuanqing Wang , Caibao Liu

{"title":"Effects of center-hung scoreboard on seismic responses of suspendome structure","authors":"Zhen Lu , Xiongyan Li , Suduo Xue , Yuanqing Wang , Caibao Liu","doi":"10.1016/j.tws.2025.113313","DOIUrl":"10.1016/j.tws.2025.113313","url":null,"abstract":"<div><div>In order to investigate the effect of the center-hung scoreboard on the seismic response of the suspendome structure, a two-degree-of-freedom (2-DOF) series dynamic model was established based on the primary-secondary coupled effect. The dynamic response of the coupled system was then derived using the transfer function method. Subsequently, the MATLAB software was used to conduct a comprehensive investigation into the impact of various parameters, including the center-hung scoreboard, its lifting, and the site soil characteristic frequency, on the vertical and horizontal seismic responses of the suspendome structure. By comparing with the test results, the impact of different parameters on the dynamic response of the suspendome structure was obtained. Finally, the parametric analysis of the mass ratio and frequency ratio was carried out by using the verified stochastic seismic model of the primary-secondary coupled system. The characteristics and laws of the dynamic interaction between the center-hung scoreboard and the suspendome structure were found and summarized: the center-hung scoreboard increases the vertical seismic response of the primary structure. The center-hung scoreboard exerts a comparatively minor impact on the horizontal seismic response of the primary structure. The center-hung scoreboard lifting has little effect on the seismic response of the superstructure. From the perspective of acceleration and displacement, in order to realize the desired interactive damping of the center-hung scoreboard and suspendome structure, the frequency ratio <em>β</em> ≥ 4 should be guaranteed.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"214 ","pages":"Article 113313"},"PeriodicalIF":5.7,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-physical driven time-dependent reliability analysis framework for reinforced concrete floating wind turbine foundations considering climate change 考虑气候变化的钢筋混凝土浮式风力机基础多物理驱动时变可靠性分析框架

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-04-12 DOI: 10.1016/j.tws.2025.113309

Jiaxin Zhang , Hongyuan Guo , Jafar Jafari-Asl , You Dong , Emilio Bastidas-Arteaga , Hongzhi Cui

{"title":"Multi-physical driven time-dependent reliability analysis framework for reinforced concrete floating wind turbine foundations considering climate change","authors":"Jiaxin Zhang , Hongyuan Guo , Jafar Jafari-Asl , You Dong , Emilio Bastidas-Arteaga , Hongzhi Cui","doi":"10.1016/j.tws.2025.113309","DOIUrl":"10.1016/j.tws.2025.113309","url":null,"abstract":"<div><div>As a critical component of floating offshore wind turbines (FOWTs), reinforced concrete (RC) floating foundations are typically designed to last two to three times longer than the upper structure. However, their durability and reliability are challenged due to the coupled effects of corrosion and fatigue in harsh marine environments. This study proposes a multi-physics coupling framework to explore the deterioration mechanisms of RC-FOWT foundations under dynamic wind-wave loading and adverse environments. A cylindrical chloride diffusion model quantifies chloride transport in concrete, considering temperature, humidity, and fatigue-induced cracks. A pitting corrosion model assesses the cross-sectional loss and pitting depth of steel reinforcements, while the Paris-Erdogan fatigue crack growth model simulates corrosion-induced crack propagation under cyclic loading. Additionally, probability density function informed method-driven probabilistic analysis and various climate change scenarios predict the time-dependent failure probability of FOWT foundations. Results indicate that extreme climate change scenarios may increase energy production by 12.9% compared to non-climate-change scenario. However, chloride diffusion and corrosion rates accelerate by 62%, significantly speeding up crack propagation and reducing structural lifespan by approximately 49.15%. This study highlights the trade-off between increased energy production and accelerated structural deterioration due to climate change, emphasizing the need for balanced design considerations.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113309"},"PeriodicalIF":5.7,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lipped channel section laminated beams with non-symmetries subjected to four-point bending 受四点弯曲的非对称唇形槽截面层合梁

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-04-12 DOI: 10.1016/j.tws.2025.113311

Filip Kazmierczyk, Monika Zaczynska, Tomasz Kubiak

{"title":"Lipped channel section laminated beams with non-symmetries subjected to four-point bending","authors":"Filip Kazmierczyk, Monika Zaczynska, Tomasz Kubiak","doi":"10.1016/j.tws.2025.113311","DOIUrl":"10.1016/j.tws.2025.113311","url":null,"abstract":"<div><div>Short GFRP beams with lipped cross-section beams subjected to four-point bending have been investigated. The influence of non-symmetries in the form of non-symmetric cross-section and non-symmetric laminate layer arrangement on buckling and post-buckling behavior has been investigated. It was found that also for short beams under bending the distortion or lateral distortion buckling mode could exist. These types of buckling modes may lead to lateral deflection in the post-buckling range and finally decrease the load-carrying capacity. The non-symmetrical layer arrangement characterizes the non-obvious behavior due to different types of ABD matrix couplings. Therefore, it was danalyzed how the layer arrangements impact the lateral deflection, buckling load, and/or load-carrying capacity. The finite element model has been developed and validated by the results of experimental tests. The parametric studies, i.e., checking the influence of non-symmetries on beam behavior have been performed. Discussing relations between layer arrangements, cross-section, buckling, and post-buckling behavior is presented. Where it was found that it is possible to find non-symmetrical cross-section and layer arrangements that provide the lowest lateral deflections.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113311"},"PeriodicalIF":5.7,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Elastic dislocation states of full-polarization micromechanical metamaterials 全极化微机械超材料的弹性位错态

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-04-12 DOI: 10.1016/j.tws.2025.113270

Yuyang Chen , Boqing Lei , Ying Wu , Yijie Liu , Zhiwei Yu

{"title":"Elastic dislocation states of full-polarization micromechanical metamaterials","authors":"Yuyang Chen , Boqing Lei , Ying Wu , Yijie Liu , Zhiwei Yu","doi":"10.1016/j.tws.2025.113270","DOIUrl":"10.1016/j.tws.2025.113270","url":null,"abstract":"<div><div>Benefiting from the profound advancements in topological metamaterials of condensed matter physics, micromechanical metamaterials have demonstrated extensive applicability in transporting high-frequency elastic waves. However, the full-polarization elastic waves impose profound challenges on the practical applications of micromechanical metamaterials. Since most current studies remain confined to single polarization, we have engineered micromechanical metamaterials capable of eliciting a full polarization response to topological edge and corner modes. Firstly, we design a phononic crystal with <span><math><msub><mrow><mi>C</mi></mrow><mrow><mn>4</mn></mrow></msub></math></span> symmetry, which exhibits line degeneracies along the boundaries of the Brillouin zone. Line degeneracies are lifted through geometric perturbation, and a higher-order bandgap identified by modal analysis is generated. By successfully separating the high-order bandgaps for in-plane and out-of-plane modes, we achieve edge and corner states in pure in-plane, out-of-plane, and full-polarization configurations. Besides, we first incorporate topological Wannier cycles into full-polarization micromechanical metamaterials. Compared to the edge states in higher-order phases, the robust dislocation states span nearly the entire bandgap, greatly enhancing the utilization of topological protection. Inspired by the mode conversion of elastic waves, we explored the coupling phenomenon between dislocation and edge states, which enhances the energy harvesting and frequency identification capabilities of higher-order dislocation structures. The novel concept of combining helical dislocations with artificial gauge flux significantly expands the manipulation of full-polarization elastic waves, offering a powerful tool for identifying higher-order topological phases.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"214 ","pages":"Article 113270"},"PeriodicalIF":5.7,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental and numerical investigation of axially loaded aluminium alloy angle struts with lateral bracing on one leg 单腿侧撑轴向载荷铝合金角支撑的试验与数值研究

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-04-11 DOI: 10.1016/j.tws.2025.113310

Zhaoyu Xu , Yujia Zhang , Lei Zhang , Yafei Chen , Genshu Tong

引用次数: 0

Mechanical response and damage mechanism of carbon/Kevlar hybrid braiding composite laminates under quasi-static indentation and low-velocity impact loading 准静态压痕和低速冲击载荷下碳/凯夫拉混杂编织复合材料层合板的力学响应及损伤机理

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-04-11 DOI: 10.1016/j.tws.2025.113291

Mingling Wang , Lin Shi , Zhongxiang Pan , Zhenyu Wu

{"title":"Mechanical response and damage mechanism of carbon/Kevlar hybrid braiding composite laminates under quasi-static indentation and low-velocity impact loading","authors":"Mingling Wang , Lin Shi , Zhongxiang Pan , Zhenyu Wu","doi":"10.1016/j.tws.2025.113291","DOIUrl":"10.1016/j.tws.2025.113291","url":null,"abstract":"<div><div>The study explains the distinctions in the response and damage evolution of hybrid structures subjected to quasi-static indentation (QSI) and low-velocity impact (LVI) loading, and the toughening mechanism of Kevlar in enhancing the impact resistance of Carbon Fiber Reinforced Polymer (CFRP). It offers insights for the design of hybrid composites under QSI and LVI loading. The analysis encompasses an investigation of the discrepancies in energy absorption, damage area, and damage form for hybrid laminates with varying Kevlar hybrid ratios and interlayer sequences. Furthermore, the finite element models (FEM) and periodic indentation test were employed to elucidate the damage mechanisms of laminates under loading process. It is proposed that energy absorption can be employed as a reasonable indicator for the comparison of static and dynamic loading responses. As the ratio of toughness to Kevlar hybrid increases, the static energy absorption of hybrid laminates declines gradually, whereas the dynamic energy absorption rises. Compared to static loading, the damage of fibres and yarns is more pronounced under dynamic loading. The extent of impact damage in hybrid specimens is contingent upon the number and distribution of Kevlar layers. In static loading, damage propagated from the loading surface to the non-loading surface, ultimately leading to the failure of structure. In contrast, under dynamic loading, damage initiated on the surface not subjected to loading and propagated towards the loaded surface, ultimately leading to a similar outcome.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113291"},"PeriodicalIF":5.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic compressive behaviour of multi-dimensional hybridized TPMS structure 多维杂化TPMS结构的动态压缩特性

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-04-11 DOI: 10.1016/j.tws.2025.113304

Xiaonan Zhang, Xiangyu Xie, Shilin Yan, Yongjing Li, Yushuang Fang, Cheng Wang, Liang Ke

{"title":"Dynamic compressive behaviour of multi-dimensional hybridized TPMS structure","authors":"Xiaonan Zhang, Xiangyu Xie, Shilin Yan, Yongjing Li, Yushuang Fang, Cheng Wang, Liang Ke","doi":"10.1016/j.tws.2025.113304","DOIUrl":"10.1016/j.tws.2025.113304","url":null,"abstract":"<div><div>Triply periodic minimal surface (TPMS) lattices are widely used in aerospace, ballistic protection, and impact mitigation. Although numerous studies indicate that hybrid designs can improve the mechanical performance of TPMS structures, their effects on dynamic crushing and impact properties are still not well understood. This study integrates the mechanical characteristics of P and IWP unit cells to develop multi-dimensional (from 1D to 3D) hybrids using Sigmoid functions. Hybrid TPMS structures were produced from Al–Si10–Mg powder using the laser-based powder bed fusion (PBF–LB/M) technique. Their dynamic performance was evaluated through Split Hopkinson Pressure Bar (SHPB) tests, which validated finite element simulations within a 10 % strain range. The numerical simulations then provided dynamic response results over a broader range. The results demonstrate that hybrid designs significantly enhance energy absorption, with hybrid direction or plane aligned parallel to the compression direction achieving higher specific energy absorption (<em>SEA</em>), while the plateau stress increases under vertical alignment. Among these, the Hyb-1D IWP–P–IWP showed the best performance under high-strain-rate conditions. Additionally, the Gibson-Ashby theory was used to predict <em>SEA</em> and plateau stress across different relative densities, and stress-strain responses revealed notable sensitivity to loading rates. These findings highlight the potential of hybrid TPMS designs to optimize dynamic energy absorption, offering promising applications in military and impact protection systems.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113304"},"PeriodicalIF":5.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel CFS truss with stamped diagonal system 新型冲压对角体系CFS桁架

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-04-11 DOI: 10.1016/j.tws.2025.113295

Cleirton A.S. Freitas , Cheng Yu , Sai K. Nalla

引用次数: 0