Thin-Walled Structures最新文献

{"title":"Strengthening of hot-rolled S355 steel I-section beams using WAAM high strength steel","authors":"Jiachi Yang,&nbsp;M. Ahmer Wadee,&nbsp;Leroy Gardner","doi":"10.1016/j.tws.2025.113437","DOIUrl":"10.1016/j.tws.2025.113437","url":null,"abstract":"<div><div>An experimental investigation to assess the major-axis flexural behaviour of 12 hot-rolled S355 steel I-section beams strengthened by the addition of high strength steel (HSS) through wire arc additive manufacturing (WAAM) is presented. The geometry of the beam specimens was obtained by means of 3D laser scanning. The mechanical properties of both the hot-rolled and the WAAM steel were determined through monotonic tensile testing. Physical testing of the strengthened beam specimens was conducted. The results showed that the WAAM strengthening led to dramatic increases in bending resistances of between 35% and 80% under four-point bending, and of between 30% and 85% under three-point bending, for increases in mass of between just 5% and 15% respectively. At the same time, the specimens exhibited good ductility, despite the high strength of the WAAM additions. The presented experimental results, which are the first of their kind, successfully demonstrate the applicability of the proposed strengthening approach for both new and retrofitted steel beams, and the game-changing potential for enhancements in structural efficiency and reductions in embodied carbon in the construction industry.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"215 ","pages":"Article 113437"},"PeriodicalIF":5.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178426","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}

{"title":"An origami structure exhibiting both structural stability and mechanical flexibility","authors":"Ning Feng ,&nbsp;Yuanhao Tie ,&nbsp;Ronghui Guo ,&nbsp;Jie Yan ,&nbsp;Qingwen Yuan ,&nbsp;Klaus Pantke ,&nbsp;Andras Biczo","doi":"10.1016/j.tws.2025.113500","DOIUrl":"10.1016/j.tws.2025.113500","url":null,"abstract":"<div><div>Origami is an ancient craft that enables paper to be skillfully folded into delicate three-dimensional (3D) structures. In recent years, the integration of origami into the realm of mechanical metamaterials has given rise to origami metamaterials, garnering significant attention across diverse disciplines. The present study takes inspiration from the art of origami to propose an innovative origami structure. The structure consists of several unit cells rotating array, and the structure are accurately localized by establishing the spatial equations. Meanwhile, theoretical, experimental and finite element (FE) methods are used to thoroughly investigate the load-bearing capacity of the structure, the significant stiffness discrepancy in the two directions, and the cavity volume. The study reveals that the structure exhibits a load-bearing capacity exceeding 1730 times its own weight and demonstrates a maximum stiffness ratio of 74.35 in two directions, while also displaying a negative Poisson’s effect. Additionally, the structure exhibits bi-stability during an indefinite flipping process, and the cavity volume of a single structure can be tuned by orders of magnitude under pressure. This study further advances the field of origami metamaterials and provides new ideas for the design of origami metamaterial structures.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"215 ","pages":"Article 113500"},"PeriodicalIF":5.7,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169383","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}

{"title":"3D-printing multiphase triply periodic minimal surfaces lattice: A novel hybrid design with excellent energy absorption and impact resistance","authors":"Zheng Bian ,&nbsp;Yu Gong ,&nbsp;Hao Liu ,&nbsp;Jianyu Zhang ,&nbsp;Libin Zhao ,&nbsp;Ning Hu","doi":"10.1016/j.tws.2025.113442","DOIUrl":"10.1016/j.tws.2025.113442","url":null,"abstract":"<div><div>The multi-phase design of additively manufactured triply periodic minimal surfaces (TPMS) lattices and a series of studies have demonstrated that this design strategy has excellent mechanical performance improvement effects compared to homogeneous materials. However, the influence of phase proportions on mechanical properties under quasi-static compression and high strain-rate impact remains underexplored. Inspired from precipitation strengthening, this study investigates the energy absorption and deformation behaviors of multiphase TPMS lattices with varying hybrid ratios. By combining finite element simulations and experiments, the impact of hybrid ratio, relative density, and strain rate on specific stiffness, strength, and energy absorption was investigated. Results indicate that unlike the previous equipartitioned multiphase structure, the inserted multiphase structure has better energy absorption performance and impact resistance with a smaller hybrid ratio. These findings provide valuable insights for multiphase design and application of multiphase metamaterials in engineering structures.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"215 ","pages":"Article 113442"},"PeriodicalIF":5.7,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123391","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}

{"title":"GFRP – sea water sea sand coral concrete – high strength steel composite column: Concept and axial compressive behavior","authors":"F.M. Ren ,&nbsp;C.L. Lai ,&nbsp;J.C.M. Ho ,&nbsp;J. Cui ,&nbsp;S.Y. Tian ,&nbsp;R.Y. Zeng ,&nbsp;M.H. Lai","doi":"10.1016/j.tws.2025.113487","DOIUrl":"10.1016/j.tws.2025.113487","url":null,"abstract":"<div><div>An innovative glass fiber-reinforced polymer (GFRP) - sea water sea sand coral concrete (SSCC) - high strength steel (HSS) composite column has been proposed, offering excellent corrosion resistance, the use of locally sourced raw materials and superior mechanical performance. Eleven columns have been designed and tested under axial compression. The effect of GFRP layers and filament winding angle of GFRP tube, HSS thickness and concrete mix proportion on the axial compressive behavior of the newly-developed composite column has been investigated. Test results indicated that the composite column exhibited superior strength and deformation capacity. Besides, using silica fume to replace partial cement could improve the material performance of SSCC and also the stiffness and strength of the composite column. Moreover, larger layer and filament winding angle of GFRP could enhance the overall behavior of the composite column. The strength of the columns exceeded 1.7 times of the squash load, i.e., the sum of the load carried by GFRP tube, SSCC and HSS, showing significant confinement effect. Considering the effect of coral aggregate and filament winding angle, equations predicting the load-carrying capacity for the composite columns were proposed. By comparing the predicted and experimental results, the validity of the proposed equations was confirmed.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"215 ","pages":"Article 113487"},"PeriodicalIF":5.7,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169384","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}

{"title":"Probabilistic seismic design method for high-rise self-centering friction-viscous braced steel moment-resisting frames using the XGBoost-GA algorithm","authors":"Ruizhao Zhu ,&nbsp;Tong Guo ,&nbsp;Shuling Hu ,&nbsp;Tao Wang ,&nbsp;Yu Xia ,&nbsp;Solomon Tesfamariam","doi":"10.1016/j.tws.2025.113394","DOIUrl":"10.1016/j.tws.2025.113394","url":null,"abstract":"<div><div>The self-centering friction-viscous device (SC-FVD) is a novel high-performance resilience system reducing the structural peak inter-story drift ratio (PISDR), residual inter-story drift ratio (RISDR), and peak floor acceleration (PFA). This study proposes a design method for high-rise SC-FVD braced steel moment-resisting frames (MRFs) based on the machine learning algorithm, with the performance objectives of the probability of exceeding PISDR, RISDR, and PFA. First, an equivalent multi-degree-of-freedom shear model is established, and a lateral load distribution model is established based on the XGBoost algorithm using hyperparameters optimized by the genetic algorithm (XGBoost-GA algorithm). The probability distribution models of peak inter-story displacement (PISD), residual inter-story displacement (RISD), and PFA ratios are then established, and the influence of design parameters on the probabilistic PISD, RISD, and PFA ratios is studied. Subsequently, a prediction model for the mean and variance of PISD, RISD, and PFA ratios is established using the XGBoost-GA algorithm. Finally, the design method with the probability of exceeding PISDR, RISDR, and PFA as performance objectives is proposed and validated through different height structures with different probability objectives. The results indicate that the revised Eurocode lateral load distribution model results in a more uniform PISDR distribution than the revised ASCE, unrevised Eurocode, and unrevised ASCE lateral load distribution models. The prediction models for the revised Eurocode load distribution model, as well as the mean and variance of the PISD, RISD, and PFA ratios, based on the XGBoost-GA algorithm, are highly accurate, with a determination coefficient of mostly above 0.99. The actual performance of the designed structure is close to the predicted probability performance, with the probability error falling within 10 %, confirming the effectiveness of the design method.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"215 ","pages":"Article 113394"},"PeriodicalIF":5.7,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169336","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}

{"title":"Probabilistic analysis of cylindrical shells under continuously varying load combinations","authors":"Niklas Reuter,&nbsp;Benedikt Kriegesmann","doi":"10.1016/j.tws.2025.113319","DOIUrl":"10.1016/j.tws.2025.113319","url":null,"abstract":"<div><div>This paper presents a probabilistic design method for cylindrical shells under combined loading without explicitly simulating each load combination. Exemplarily, the combination of axial compression and torsion is considered. The probabilistically motivated design load is a quantile of the buckling load distribution. The stochastic distribution of the buckling load (and hence any quantile) differs for each combination of axial load and torsion. The basic idea of the presented method is to consider the buckling response as a random field, where the parameter describing the load ratio is the field variable. When this random field is characterized, the stochastic distribution may be determined for any load combination without explicitly running a probabilistic analysis for this load combination. This approach is compared to a more simple and straightforward approach of interpolating stochastic moments or quantiles between different load combinations.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"215 ","pages":"Article 113319"},"PeriodicalIF":5.7,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117078","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}

{"title":"Molecular dynamics study on fracture mechanism of functionally graded multilayer graphene origami under nanoindentation","authors":"Wei Zhang,&nbsp;Yingyan Zhang,&nbsp;Shaoyu Zhao,&nbsp;Yihe Zhang,&nbsp;Jie Yang","doi":"10.1016/j.tws.2025.113482","DOIUrl":"10.1016/j.tws.2025.113482","url":null,"abstract":"<div><div>Owing to its outstanding mechanical properties, graphene has been widely used as an ideal reinforcement material in nanocomposites for various engineering structures. However, its practical application is significantly hindered by its inherent brittleness, i.e., it breaks at a low strain level under external loading. To address this formidable limitation, we leverage hydrogen functionalization and origami engineering to develop new graphene origami (GOri) and on top of that design innovative functionally graded multilayer graphene origami (FG-MGOri) structures with hydrogenation degree changing gradually in a layer-wise manner. Molecular dynamics simulation results on nanoindentation demonstrate that the transformation of two-dimensional flat graphene to three-dimensional GOri through hydrogen functionalization significantly enhances graphene’s flexibility, albeit with a trade-off in strength. However, this flexibility-strength trade-off can be effectively mitigated by using FG-MGOri. Our findings reveal that FG-MGOri with the O pattern (highest hydrogen atom in the middle and lowest hydrogen atom in the top and bottom) exhibits a remarkable 79.7 % improvement in indentation depth compared to pristine multilayer graphene while maintains its high failure load. It is also found that the maximum indentation depth at the final failure of FG-MGOri increases as the total number of layers increases but the indentation load is rather insensitive. The present study reveals distinct nanoindentation features of FG-MGOri and provides valuable insights for the design of novel multilayer GOri structures with great potential applications in advanced materials and composites.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"215 ","pages":"Article 113482"},"PeriodicalIF":5.7,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169381","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}

{"title":"Vibration analysis of nonuniform and curved-axis flexure hinges/beams by a recursive dynamic compliance matrix","authors":"Shilei Wu ,&nbsp;Jie Zhu ,&nbsp;Huaxian Wei ,&nbsp;Yiteng Zhang ,&nbsp;Mingxiang Ling","doi":"10.1016/j.tws.2025.113495","DOIUrl":"10.1016/j.tws.2025.113495","url":null,"abstract":"<div><div>Dynamic analysis plays a crucial role in designing flexure hinges/beams and their composed compliant mechanisms and structures. However, the complexity of nonuniform profiles and variable-curvature curved axes often presents significant modeling challenges. In this paper, we introduce a novel dynamic compliance matrix (DCM) with the idea of beam discretizing and mass grounding to efficiently analyze the static compliance and vibrational behavior of both straight and curved-axis flexure hinges/beams. A recursive formulation of the presented DCM is established for all kinds of nonuniform, curved-axis and folded flexure hinges/beams by developing the scheme of dynamic compliance matrix summation for serial chains and dynamic stiffness matrix summation for parallel branches. A designer just needs to prepare the concerned geometry of hinges/beams and follow a step-by-step matrix summation operation without being caught into laborious and even unsolvable derivations. To demonstrate the effectiveness of the recursive DCM, three case studies are presented. Comparisons with theoretical methods in literature, finite element simulations and experimental testing confirm the advantages of the recursive DCM for both kinetostatic compliance and vibration analyses of complex flexure hinges/beams, as well as their composed compliant building blocks.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"215 ","pages":"Article 113495"},"PeriodicalIF":5.7,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138478","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}

{"title":"TOPSIS analysis and failure mechanism of low-velocity impact behavior of S-glass/aramid fiber reinforced hybrid composite laminates","authors":"Yuhang Ding ,&nbsp;Xishuang Jing ,&nbsp;Fubao Xie ,&nbsp;Siyu Chen ,&nbsp;Chengyang Zhang ,&nbsp;Gang Zhao ,&nbsp;Wei Jiang","doi":"10.1016/j.tws.2025.113489","DOIUrl":"10.1016/j.tws.2025.113489","url":null,"abstract":"<div><div>Hybrid fiber design has great potential to enhance the mechanical properties of laminates and is widely applied in aerospace and automotive industries. However, there is limited research on hybrid fiber-reinforced laminates (HFRP) where both sides consist of glass fibers. This study employs multicriteria decision analysis and experimental methods to investigate the hybrid effects on the failure mechanisms of S-glass/aramid HFRP under low-velocity impact. Different impact energies (5 J, 10 J, and 20 J), glass fiber/aramid fiber ratios, and fiber arrangements were designed and applied in the experiments. The results demonstrate that HFRP laminates exhibit a positive hybrid effect, with pure fiber laminates being the worst design. Under the asymmetric arrangement, the energy dissipation of HFRP surpasses that of pure glass fiber by 56 %. Through experiments and TOPSIS verification, this configuration enhances the resistance to low-velocity impacts, providing key data for optimizing lightweight, impact resistant structures in aerospace applications.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"215 ","pages":"Article 113489"},"PeriodicalIF":5.7,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146931","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}

{"title":"Local buckling load of a perforated plate – A computational study","authors":"Elenor Naraidoo ,&nbsp;Barbara Rossi","doi":"10.1016/j.tws.2025.113445","DOIUrl":"10.1016/j.tws.2025.113445","url":null,"abstract":"<div><div>The webs of thin-walled beams and columns can be perforated for aesthetic, maintenance or structural purposes, affecting the elastic buckling behaviour when subject to compression. When conservatively approximated as a simply-supported plate, the web may exhibit one of four local buckling modes. These modes may interact, akin to the interaction of global, distortional and local buckling observed in thin-walled columns. Accounting for this, five subsets of buckling deformation are defined and used to develop an algorithm, which determines the corresponding buckling mode depending on geometrical limits. These modes are Whole Plate Buckling (WPB), Unstiffened Strip Buckling (USB), Euler Strip Buckling (ESB), Lateral Perforation Buckling (LPB), or an interaction of these (INT). For each mode, a predicting equation for the critical elastic buckling load is proposed and compared to the critical elastic buckling load determined with the Finite Element Method (FEM). The mean ratio of the elastic buckling load for a perforated plate found with FEM to that predicted with the proposed formulae is 1.00 for 775 models, with an overall R² coefficient of 0.840. Finally, a reliability assessment determines a statistical model factor <span><math><mi>γ</mi></math></span> for a 95 % confidence interval. This factor is found for each local buckling mode, and proposed as 1.17 for all plates with any number of perforations, not exhibiting LPB.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"215 ","pages":"Article 113445"},"PeriodicalIF":5.7,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105738","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}