Thin-Walled Structures最新文献_第7页

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

Fatigue experimental study on the joint plate under out-of-plane vibration in steel tubular transmission towers

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-03-07 DOI: 10.1016/j.tws.2025.113178

Jiaqi Wang , Xiaohong Wu , Sitong Wei , Chao Zhao , Ming Sheng , Pereira Paulo , Qing Sun

{"title":"Fatigue experimental study on the joint plate under out-of-plane vibration in steel tubular transmission towers","authors":"Jiaqi Wang , Xiaohong Wu , Sitong Wei , Chao Zhao , Ming Sheng , Pereira Paulo , Qing Sun","doi":"10.1016/j.tws.2025.113178","DOIUrl":"10.1016/j.tws.2025.113178","url":null,"abstract":"<div><div>Vortex-induced vibration (VIV) of steel tubular members in transmission towers under light wind conditions leads to long-term out-of-plane vibration of the joint plates at the ends of the members, which in turn causes fatigue cracking. Given the current inability to fully elucidate the mechanism of VIV, this study focuses on investigating the fatigue performance of such joints to guide fatigue design and ensure the structural safety. In this study, a series of fatigue tests are conducted to explore the influence of two methods—raising the ring plate height and increasing the joint plate thickness—on the fatigue performance of the joints. The analysis includes aspects such as fatigue failure modes, stiffness degradation, crack propagation, life prediction, and changes in dynamic properties. The results indicate that both methods contribute to improving the fatigue life in the two stages of the fatigue failure process to varying degrees. Furthermore, the S-N curve established based on average hot spot stress can effectively predict the fatigue life in the first failure stage. The study also finds a near-linear relationship between crack propagation on the joint plate and stiffness degradation, with the slope depending on the initial stiffness of the joint. Measurements of dynamic properties throughout various stages of fatigue damage indicated a substantial decrease in both the damping ratio and natural frequency of the system as the joint plate incurred fatigue damage.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113178"},"PeriodicalIF":5.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628150","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

On the transient dynamics of FGM cylindrical panels with cutout under thermal shock employing 2D Chebyshev-based energy method

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-03-07 DOI: 10.1016/j.tws.2025.113176

Dongliang Zhang , Dengfeng Li , Jun Gao , Zhixin Wu , Chuan Jin

{"title":"On the transient dynamics of FGM cylindrical panels with cutout under thermal shock employing 2D Chebyshev-based energy method","authors":"Dongliang Zhang , Dengfeng Li , Jun Gao , Zhixin Wu , Chuan Jin","doi":"10.1016/j.tws.2025.113176","DOIUrl":"10.1016/j.tws.2025.113176","url":null,"abstract":"<div><div>In numerous industrial applications, cylindrical panels often require cutout to serve functional purposes, while simultaneously enduring thermal loads. This study investigates the transient dynamic response of cylindrical panels with cutout, composed of functionally graded materials (FGMs), under rapid thermal shock. The FGMs, engineered from a ceramic-metal mixture, are tailored to withstand harsh thermal environments. By solving the heat conduction equation through appropriate discrete numerical methods, the temperature distribution within the panel is determined over time. Subsequently, the modified Lagrangian function of the structure is formulated using the first-order shear deformation theory (FSDT). The 2D Chebyshev-based Ritz approach is then utilized to minimize the Lagrangian energy function, providing an accurate dynamic response. For time evolution analysis, the Newmark time integration scheme is employed to capture the transient deflections. This research is the first to explore the thermally induced dynamic behavior of panels with cutouts, offering new insights into the impact of varying cutout dimensions and boundary conditions on structural performance. This study further employs a sensitivity analysis to evaluate the influence of varying material gradation on the panel's stability and thermal performance, providing deeper insights into optimizing structural design.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113176"},"PeriodicalIF":5.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610717","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