Thin-Walled Structures最新文献_第6页

Theoretical, experimental and numerical studies of a novel tension-compression bolt (TCB) for single-sided beam-column joints

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-03-09 DOI: 10.1016/j.tws.2025.113172

Yulong Feng , Cheng Han , Wensu Chen

{"title":"Theoretical, experimental and numerical studies of a novel tension-compression bolt (TCB) for single-sided beam-column joints","authors":"Yulong Feng , Cheng Han , Wensu Chen","doi":"10.1016/j.tws.2025.113172","DOIUrl":"10.1016/j.tws.2025.113172","url":null,"abstract":"<div><div>Single-sided beam-column joints can minimize damage to the floor slab by avoiding the opening at the top flange. However, they face the challenge of limited restorative capacity, as unidirectional self-centering components cannot effectively resist both opening and closing actions at the bottom flange. Therefore, this study proposes a novel tension-compression bolt (TCB) that is a bidirectional self-centering component. It consists of a high-strength bolt for applying preload, a disc spring set to enhance deformation capacity, and a pair of sleeves that provide tension-compression functionality. In this study, theoretical analysis of the TCB is derived regarding load-displacement relationship and the TCB design process is proposed. After that, experimental study of the TCB is conducted to investigate its tension-compression performance as well as the effects of the disc spring set and sleeve on the performance. In addition, numerical simulations are conducted using detailed and simplified modelling methods for the TCB tests, and the influence of machining inaccuracies on the performance is assessed. Subsequently, a case study of beam-column joints incorporated with the TCB is numerically conducted. The proposed TCB demonstrates an enhanced tension-compression performance with sound energy-dissipating capacity, providing an effective solution for single-sided beam-column joints used in resilient structures to enable rapid restoration of functionality after earthquakes.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113172"},"PeriodicalIF":5.7,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel concrete-filled steel square tubular columns stiffened with semi-circles: Concept and behaviour

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-03-09 DOI: 10.1016/j.tws.2025.113188

Shuai Li , Faqi Liu , Tak-Ming Chan , Hua Yang , Ben Young

{"title":"Novel concrete-filled steel square tubular columns stiffened with semi-circles: Concept and behaviour","authors":"Shuai Li , Faqi Liu , Tak-Ming Chan , Hua Yang , Ben Young","doi":"10.1016/j.tws.2025.113188","DOIUrl":"10.1016/j.tws.2025.113188","url":null,"abstract":"<div><div>A novel concrete-filled steel tubular (CFST) column with semi-circular stiffeners welded in the inner side of the square tube is proposed in this study. The semi-circular stiffeners are developed based on the confinement mechanism in square CFST columns and aim to strengthen the confinement effect on concrete in the whole cross-section area, therefore improving the overall structural performance of the composite columns. The section is also flexible to use different grades of concrete in the core and cell regions. Experimental investigation on axial compressive behaviour of the semi-circle stiffened concrete-filled steel tubular (SCS-CFST) columns was carried out. High strength steel Q690 and two concrete grades C40 and C90 were adopted for the test specimens. Various parameters including steel tube thickness, cross-section slenderness, combination of different concrete grades as well as semi-circular stiffener size were investigated. Results showed that the semi-circular stiffeners were effective resist local buckling of the square tubes. SCS-CFST columns, particularly for those with C40 infilled in the core region and C90 infilled in the cell regions, presented significantly enhanced compressive strength and ductility compared to the corresponding normal unstiffened CFST columns. The applicability of existing design equations in European, American and Chinese standards was evaluated for the novel SCS-CFST columns. A new design approach that could more accurately consider the confinement effect in different regions was proposed and exhibited good performance.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113188"},"PeriodicalIF":5.7,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686268","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

Numerical investigation of the flexural-torsional behaviour of built-up cold-formed steel beams

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-03-08 DOI: 10.1016/j.tws.2025.113183

Di Ma, Kim J.R. Rasmussen, Hao Zhang

{"title":"Numerical investigation of the flexural-torsional behaviour of built-up cold-formed steel beams","authors":"Di Ma, Kim J.R. Rasmussen, Hao Zhang","doi":"10.1016/j.tws.2025.113183","DOIUrl":"10.1016/j.tws.2025.113183","url":null,"abstract":"<div><div>This study examines the structural behaviour of built-up cold-formed steel (CFS) beams with and without lateral bracings, failing under four-point bending due to various buckling modes. The numerical models are developed using the Finite Element (FE) software ABAQUS 6.13. The models are discretised with S4R elements, end conditions are modelled as simply supported, and non-linear analyses are conducted which include material, geometric and contact non-linearities as well as geometric imperfections. The numerical models are validated by means of comparisons with published experimental results in terms of moment capacities, moment versus deflection curves and failure modes. Subsequently, using the verified FE models, a parametric study is carried out for different cross-section geometries and different thicknesses by varying the fastener spacings and fastener shear stiffness. The paper draws conclusions about the effectiveness of varying the fastener parameters for different built-up cross-sections, and presents a comprehensive database of ultimate strengths towards deriving design strength curves.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113183"},"PeriodicalIF":5.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic response and damage characterization of the clamped plate subjected to underwater explosions with double charges

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-03-08 DOI: 10.1016/j.tws.2025.113177

Lele Cheng , Fenglei Huang , Haijun Wu , Ximin Deng , Junhao You

{"title":"Dynamic response and damage characterization of the clamped plate subjected to underwater explosions with double charges","authors":"Lele Cheng , Fenglei Huang , Haijun Wu , Ximin Deng , Junhao You","doi":"10.1016/j.tws.2025.113177","DOIUrl":"10.1016/j.tws.2025.113177","url":null,"abstract":"<div><div>Understanding the dynamic responses and damage mechanisms of thin-walled metal structures under complex loading conditions is crucial for the safety of marine vessels. Previous research has predominantly focused on the dynamic response behavior of thin-walled structures under sequentially repeated loads, without considering the damage effects induced by the simultaneous application of multiple loads. This study employs a combination of experimental and numerical approaches to systematically investigate the dynamic responses and damage characteristics of thin-walled steel plates subjected to simultaneous double-charge underwater explosions. The experimental and simulation results reveal that the sustained propagation of transmitted waves in a water-backed environment influences the bubble expansion behavior, resulting in the deformation rebound of the plates. Furthermore, the concave deformations in the plate are aligned along the symmetry plane of the two charges, resulting in the development of a trace line during the deformation process. In addition, the influence of the pre-pierced holes on the plate deflection within the plastic range is negligible. An optimal spacing range for double-charges at a given standoff distance is identified, which results in the maximum plate deflection. These findings provide valuable insights into the damage to thin-walled structures under simultaneous multi-load conditions and offer new perspectives for enhancing protective design in ship engineering.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113177"},"PeriodicalIF":5.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143635819","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 buckling behavior of steel pallet rack frames stabilized by single-sided spine bracing

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-03-08 DOI: 10.1016/j.tws.2025.113186

Zhaoqi Huang , Xianzhong Zhao , Shen Yan , Ken S. Sivakumaran

{"title":"Experimental buckling behavior of steel pallet rack frames stabilized by single-sided spine bracing","authors":"Zhaoqi Huang , Xianzhong Zhao , Shen Yan , Ken S. Sivakumaran","doi":"10.1016/j.tws.2025.113186","DOIUrl":"10.1016/j.tws.2025.113186","url":null,"abstract":"<div><div>Steel pallet rack frames stabilized by single-sided spine bracing are efficient structural systems in that they commonly carry a large number of pallets while utilizing only limited footprints. This research experimentally establishes the global buckling behavior of the steel pallet racks under vertical loads and stabilized by single-sided spine bracing. A total of eight rack frames are involved in the test program. The test setup was designed to achieve realistic loading conditions at all times. The research explicitly considered the various types of commonly used spine bracing configurations and upright frame bracing configurations in industrial practices, and generated comprehensive test data. The experimental observations suggest that the pallet rack frames stabilized by single-sided spine bracing exhibit combined translational and torsional sway motions under vertical loads, and fail by a global three-dimensional buckling of the entire frame. The investigation established that the effectiveness of down-aisle spine bracing is compromised by the rack-to-spine-bracing connections, and the strength of the global rack frame is intertwined with the stabilizing force transfer mechanism between the main rack frame and the spine bracing. The transverse shear stiffness of the upright frames in the cross-aisle direction plays a key role in determining the global torsional performance and strength of the rack frames. Recommendations for the design of pallet racks stabilized by single-sided spine bracing are proposed.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113186"},"PeriodicalIF":5.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593964","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

Design of short-to-intermediate slender built-up flanged cruciform columns

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-03-08 DOI: 10.1016/j.tws.2025.113181

Jelena Dobrić , Nina Gluhović , Aljoša Filipović , Mileva Samardžić-Petrović , Xiongfeng Ruan , Barbara Rossi

{"title":"Design of short-to-intermediate slender built-up flanged cruciform columns","authors":"Jelena Dobrić , Nina Gluhović , Aljoša Filipović , Mileva Samardžić-Petrović , Xiongfeng Ruan , Barbara Rossi","doi":"10.1016/j.tws.2025.113181","DOIUrl":"10.1016/j.tws.2025.113181","url":null,"abstract":"<div><div>This paper explores the structural behaviour of cold-formed austenitic stainless steel flanged cruciform section columns through a combination of experimental and numerical methods, focusing on the influence of discrete fasteners on their flexural and torsional stiffness. The columns are designed as doubly symmetrical built-up sections, utilizing four star-oriented lipped equal-leg angle profiles interconnected with M8 bolts of class 8.8. Four intermediate slender built-up cruciform section columns, each measuring 2250 mm in length and featuring various fastener arrangements, were tested under semi-rigid support conditions and subjected to pure axial compression. The specimens failed due to a combination of torsional and local buckling. Following the experimental campaign, a parametric study was conducted based on experimentally validated numerical models to investigate key variables such as cross-sectional dimensions, column length, and bolt spacing. The experimental and numerical findings regarding the failure modes of the columns and their corresponding buckling resistances were compared with theoretical predictions. The recently proposed design procedures for carbon steel columns, based on the Direct Strength Method for built-up sections and the established Perry-Robertson design curve for solid cruciform sections, were evaluated. Results indicated that these procedures exhibited insufficient accuracy and significant data scatter, which necessitated modifications for improved predictions. The new design equations enhance accuracy and reliability, laying the groundwork for their potential incorporation into future standards.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113181"},"PeriodicalIF":5.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610719","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

Fatigue crack growth behavior of wire arc additively manufactured 316L austenitic stainless steel

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-03-08 DOI: 10.1016/j.tws.2025.113182

Yangyu Chen , Man-Tai Chen , Ou Zhao , Barbara Rossi , Xiongfeng Ruan

{"title":"Fatigue crack growth behavior of wire arc additively manufactured 316L austenitic stainless steel","authors":"Yangyu Chen , Man-Tai Chen , Ou Zhao , Barbara Rossi , Xiongfeng Ruan","doi":"10.1016/j.tws.2025.113182","DOIUrl":"10.1016/j.tws.2025.113182","url":null,"abstract":"<div><div>This study investigated the fatigue crack growth (FCG) performance of 316L austenitic stainless steel produced by wire arc additive manufacturing (WAAM) through fatigue tests and fractographic analyses. A total of 11 compact tension (CT) specimens were designed considering three minimum-to-maximum load ratios (<em>R</em>= 0.1, 0.3, 0.5), various load directions (<em>θ</em> = 0°, 30°, 45°, 60°, 90°) and two surface conditions (milled and as-built). Details of specimen fabrication and design as well as fatigue test setup are presented. The Paris’ law material constants of all specimens were derived. The influences of various parameters on the FCG behavior such as crack length development histories and fatigue crack growth rate (FCGR) are discussed. The test results demonstrated that the fatigue crack growth rate increased with the load ratio, and that the specimen with <em>θ</em> = 0°, i.e. load parallel to the welding pass, possessed higher FCGR value than the counterparts characterized by other load directions. The as-built and milled specimens had similar FCG performance. The FCG test results of WAAM 316L austenitic stainless steel obtained in this study were compared against those of 316L steels manufactured by traditional hot-rolling and selective laser melting as well as the predictions by current international standards (BS 7910 and IIW-1823-07). The fractographies of typical CT specimens from macroscopic and microscopic perspectives were analyzed. Transgranular fracture was observed as evidenced by abundant fatigue striations, secondary cracks and dimples.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113182"},"PeriodicalIF":5.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601066","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

Analysis and design of Kirigami-based metallic energy-dissipating systems

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-03-07 DOI: 10.1016/j.tws.2025.113127

Sahand Khalilzadehtabrizi , Iman Mohagheghian , Martin G. Walker

引用次数: 0

A novel prediction method for pressure vessel dome profiles based on "shortest path"

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-03-07 DOI: 10.1016/j.tws.2025.113180

Shaojing Dong , Kai Li , Yudong Pan , Ziyi Li , Xichen Wang , Shuo Zhang , Xiuli Shen

{"title":"A novel prediction method for pressure vessel dome profiles based on \"shortest path\"","authors":"Shaojing Dong , Kai Li , Yudong Pan , Ziyi Li , Xichen Wang , Shuo Zhang , Xiuli Shen","doi":"10.1016/j.tws.2025.113180","DOIUrl":"10.1016/j.tws.2025.113180","url":null,"abstract":"<div><div>As the characteristic coefficients of carbon fiber composite pressure vessels improve, the design requires more precise finite element models. However, the varying thickness profiles of the dome caused by fiber stacking and changes in winding angle pose significant challenges. To predict the dome profile more accurately, this paper developed a three-dimensional prediction method that did not require piecewise solving. The yarn was discretized, and its centerline was computed using the geodesic equation. Discrete points in the width direction were expanded outward according to the \"shortest path\" principle, forming its three-dimensional winding shape. The profile of the next layer was calculated using the arcs formed by the intersection of the yarn boundary and the parallel circles on the dome. The predicted outermost profile was then compared with the CT scan results. Based on this method and the cubic spline method, finite element models were established respectively, and progressive damage analysis was conducted. Hydraulic burst tests of the pressure vessel were performed. The results indicate that the predicted shape of the yarn shows a maximum deviation of approximately 2 mm from the actual measurements at the polar hole. The maximum relative error of the thickness predicted is -14.3%. The average strength from the three hydrostatic burst tests was 40.4 ± 0.6 MPa. The relative error of the simulation result based on the proposed method was -1.9%, marking a 5.5% improvement in accuracy over the cubic spline method. The proposed method can provide valuable insight for accurate modeling of pressure vessels.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113180"},"PeriodicalIF":5.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642207","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

Analysis of thermoelastic damping and frequency shift of nano-scale piezoelectric fiber-reinforced thermoelastic composite beam under single, dual, and three phase-lag models: A comparative approach

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-03-07 DOI: 10.1016/j.tws.2025.113134

Abhishek Kumar Singh , Sayantan Guha , Arpita Maji

{"title":"Analysis of thermoelastic damping and frequency shift of nano-scale piezoelectric fiber-reinforced thermoelastic composite beam under single, dual, and three phase-lag models: A comparative approach","authors":"Abhishek Kumar Singh , Sayantan Guha , Arpita Maji","doi":"10.1016/j.tws.2025.113134","DOIUrl":"10.1016/j.tws.2025.113134","url":null,"abstract":"<div><div>Thermoelastic damping (TED) & frequency shift (FS) have become key concerns in modeling and designing micro and nanoelectromechanical systems (MEMS/NEMS). As a result, significant research efforts are focused on reducing thermoelastic damping in MEMS/NEMS. This motivated us to analytically study TED and FS in nano-scale piezoelectric fiber-reinforced composite (PFRC) thermoelastic beams comprising PZT-5A and epoxy. The linearized Euler–Bernoulli theory is assumed and the adopted generic beam structure is treated by four sets of different conditions at its boundaries to model four distinct beams, viz., clamped-clamped (CC), simply supported-simply supported (SS), clamped-free (CF) & clamped simply supported (CS) types. We employed the Newton–Raphson method to calculate the eigenvalues of each type of beam for numerically accurate results. One of the highlights of this work is the simultaneous analysis of three-phase-lag (TPL), dual-phase-lag (DPL), and single-phase-lag (SPL) thermoelastic models under Green–Naghdi III (G-N III) thermoelasticity theory. The influences of thermal relaxation parameters, volume fraction of fibers, nano beam dimensions, and first two modes on the TED & FS are studied by means of graphs. The influences of all existing parameters on critical thickness and critical length of all four beams are also meticulously analyzed. By comparing the results with previous literature, their validity is confirmed. In comparison to a monolithic piezothermoelastic beam, the PFRC thermoelastic beams exhibit higher quality factor (Q-factor). This generates appropriate values of V<span><math><msub><mrow></mrow><mrow><mi>f</mi></mrow></msub></math></span> to design & optimize frequency-sensitive PFRC thermoelastic nano beams.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"211 ","pages":"Article 113134"},"PeriodicalIF":5.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577491","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