Thin-Walled Structures最新文献

{"title":"Local-global buckling behaviours of axially compressive welded I-section steel columns with local corrosion","authors":"Xinhao Han ,&nbsp;Chen Jia ,&nbsp;Qing Hu ,&nbsp;Changyong Liu ,&nbsp;Tianhao Xiang","doi":"10.1016/j.tws.2025.113239","DOIUrl":"10.1016/j.tws.2025.113239","url":null,"abstract":"<div><div>Welded I-section steel exposed to harsh environments is highly susceptible to corrosion, with local corrosion being particularly common and detrimental. Local corrosion causes uneven changes in plate thickness, leading to increased stress concentration and premature buckling in corroded regions, and a subsequent compromise in the stability. However, the influence of local corrosion on the buckling behaviours has not been clarified in prior research. This paper addresses this gap by designing and testing 12 welded I-section steel columns with simulated local corrosion (varying slenderness ratios, corrosion locations, corrosion depths and corrosion dimensions) under axial compression. Electrochemical accelerated corrosion tests were conducted to effectively simulate local corrosion, and the corrosion morphology was assessed using three-dimensional scanning technology. Axial compression tests were then conducted to study the influence of local corrosion on failure modes, load-displacement curves and cross-sectional strain development of corroded steel columns. Additionally, finite element (FE) models incorporating the scanned corrosion morphology were established and validated against test results for parametric analysis. The key parameters included geometric dimensions (slenderness ratio, width-to-thickness ratio, and thickness ratio) and corrosion region characteristics (location, depth, and dimension). Both experimental and numerical results revealed that local corrosion altered the buckling modes and decreased the residual resistance of the welded I-section steel columns under axial compression. Furthermore, the equivalent thickness and initial eccentricity coefficient were defined and incorporated into the existing codified approaches for predicting the residual resistance of welded I-section steel columns with local corrosion under axial compression.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113239"},"PeriodicalIF":5.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716088","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":"Laser pulses-induced thermoelastic wave propagation analysis in porous materials based on Moore–Gibson–Thompson and Love–Bishop theories using a meshless method","authors":"Seyed Mahmoud Hosseini ,&nbsp;Fengming Li","doi":"10.1016/j.tws.2025.113237","DOIUrl":"10.1016/j.tws.2025.113237","url":null,"abstract":"<div><div>This paper deals with the application of meshless generalized finite difference (GFD) method for laser pulses-induced thermoelastic wave propagation in porous materials. The governing and constitutive equations are derived for a porous rod using Moore-Gibson-Thompson (MGT) theory of coupled thermoelasticity and Love-Bishop elasticity theory for the first time. The porous rod is subjected to laser shock pulses at one of its ends. The dynamic volume fraction balance equation and the effect of porosities are taken into account to derive the MGT-based heat conduction model in porous materials. The GFD is employed to solve the governing equations in Laplace domain and then the obtained fields’ variables are transferred to time domain using Talbot Laplace inversion technique. The transient behaviors of all fields’ variables such as displacement, temperature and voids’ volume fraction are obtained for various values of the time relaxation parameter in the MGT theory. Also, propagations of thermoelastic wave fronts in displacement, temperature and volume fraction are illustrated at various time steps. To verify the proposed solution approach, the derived governing equations and results, a comparison with a good agreement is conducted in the paper.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113237"},"PeriodicalIF":5.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739300","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":"Free vibration and thermoelastic damping analysis of size-dependent piezoelectric circular plate considering surface effect and nonlocal dual-phase-lag heat conduction model","authors":"Shuanhu Shi,&nbsp;Qiang Li","doi":"10.1016/j.tws.2025.113238","DOIUrl":"10.1016/j.tws.2025.113238","url":null,"abstract":"<div><div>Based on classical mechanics methods, this paper examines the size-dependent thermal-mechanical-electrical (TME) coupling performance of a piezoelectric thermoelastic circular nanoplate. The governing equation of the temperature field was derived from the nonlocal dual-phase lag heat conduction model (NDPL model), the fundamental energy balance equation, and the constitutive expression of the entropy. The influence of the surface effect was introduced into the equations of motion and the electric field in the form of surface tension and surface electric displacement, respectively. Analytical solutions for temperature variation, resonant frequency (RF), thermoelastic damping (TED), frequency shift (FS), and frequency attenuation (FA) were obtained. The correctness of the TED expression has been verified. Based on the numerical results, it is worth noting that the nonlocal thermal length (NTL) parameter reduces the real and imaginary parts of temperature variation gradient within the range of small-size effect, thereby decreasing the TED and the FS due to reduced TME coupling. Moreover, as the NTL parameter increases, the impact of thermal relaxation time on TED becomes more significant, while the surface effect on TED is relatively weaker. Additionally, the influences of key factors on TED and FS were discussed. This study showed that the surface effect and the nonlocal thermal effect have distinct impacts on TME coupling behavior. This research is helpful for the design of high-performance piezoelectric resonators.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113238"},"PeriodicalIF":5.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739371","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":"Nonlinear buckling and post-buckling of multilayered piezoelectric graded porous circular nanoplates considering of surface/interface effects","authors":"Qinglu Li ,&nbsp;Xiaojie Niu ,&nbsp;Zhaoyi Pan ,&nbsp;Jinghua Zhang","doi":"10.1016/j.tws.2025.113236","DOIUrl":"10.1016/j.tws.2025.113236","url":null,"abstract":"<div><div>The special characteristics of surfaces and interfaces significantly influence the durability and performance of materials. For the first time, this article introduces surface and interface effects into Kirchhoff thin plate theory to study the buckling and nonlinear post-buckling behavior of multilayer piezoelectric porous nanostructures. The bulk structure is a graded porous material and pores are embedded in the plate in two cosine forms of non-uniform porosity distribution with a pair of piezoelectric layers surface bonded on both sides of the bulk surface. Then, classical plate theory, combined with minimum potential energy principle, is utilized to derive the post-buckling governing equation coupling the piezoelectric effect. A shooting method is presented to obtain the buckling and post-buckling numerical solutions. The numerical results obtained reveal that the surface and interface effects, along with the applied potential, significantly influence the stability of multilayer piezoelectric graded porous circular nanoplates to varying extents.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113236"},"PeriodicalIF":5.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716202","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":"Mechanical properties of a novel mechanical metamaterial with multi-stable and mono-stable characteristics","authors":"Min Sun ,&nbsp;Zhiwei Qiu ,&nbsp;Qiang Chen ,&nbsp;Hongshuai Lei ,&nbsp;Xia Hua ,&nbsp;Zheng Zhang ,&nbsp;Yi Song ,&nbsp;Shaofei Jiang ,&nbsp;Diyong Huang ,&nbsp;Haonan Fu","doi":"10.1016/j.tws.2025.113230","DOIUrl":"10.1016/j.tws.2025.113230","url":null,"abstract":"<div><div>This study designed a novel mechanical metamaterial with multi-stable and mono-stable characteristics, fabricated using carbon fiber composite through a hot-pressing process. The mechanical properties of the designed mechanical metamaterial were obtained through quasi-static compression tests, and the effects of structural geometric parameters on its mechanical performance were analyzed. The finite element model of the mechanical metamaterial was established, and the comparison between the simulation and experiment results showed good agreement. A torque test platform was constructed to measure the torque for transitions between the multi-stable and mono-stable characteristics. The results indicate that transitioning from mono-stable to multi-stable characteristics requires a higher torque than transitioning from multi-stable to mono-stable characteristics. The designed mechanical metamaterial has both multi-stable and mono-stable characteristics, which have potential for a wide range of applications in the field of impact energy absorption as well as vibration attenuation.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113230"},"PeriodicalIF":5.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726107","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":"Data orbits similarity conversion law of scaled-down model tests of ship structures under strong impact loads","authors":"Xiongliang Yao ,&nbsp;Renjie Huang ,&nbsp;Kun Zhao ,&nbsp;Yongran Yin","doi":"10.1016/j.tws.2025.113235","DOIUrl":"10.1016/j.tws.2025.113235","url":null,"abstract":"<div><div>The model test under strong impact loads constitutes a transient, strongly nonlinear, and non-stationary physical process that exhibits extreme sensitivity to system parameters, boundary conditions, and initial conditions. A minor perturbation induces bifurcation and abrupt changes in system dynamics, resulting in output uncertainty for model tests and significant challenges in achieving similarity conversion between models and prototypes. In this paper, the second law of similarity is applied to construct data orbits of impact responses for characterizing kinematic system evolution, and a principle of topologically conjugate conversion for similar systems in phase space is proposed. Through phase space reconstruction methodology, the kinematic evolution patterns of acceleration responses in ship structures under strong impact loads are investigated, with mapping functions of acceleration response data orbits derived in phase space. A similarity equation for model-to-prototype conversion is established based on the topologically conjugate conversion principle. Theoretical analysis demonstrates the rationality of introducing prediction coefficients in distortion models, while fundamental conditions for achieving similarity conversion in nonlinear dynamical systems are formulated. Finally, the numerical results from the single-layer reinforced plate rack and cabin section show that the data orbits corresponding to the acceleration responses of the 1:2 scaled model and the prototype have the same symbol sequences in the phase space under satisfying the similarity conversion condition, which verifies the correctness of the similarity conversion of data orbits for the scaling model test of the ship structures under the strong impact loads.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113235"},"PeriodicalIF":5.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704857","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":"Tensile and shear performance of detachable tapered-head bolt inter-module connection of steel modular structure","authors":"Anling Zhang ,&nbsp;Jiadi Liu ,&nbsp;Zhihua Chen","doi":"10.1016/j.tws.2025.113228","DOIUrl":"10.1016/j.tws.2025.113228","url":null,"abstract":"<div><div>The connections between modular units significantly impact the construction speed and load-bearing capacity of modular steel structures. However, most existing inter-module connections struggle to meet the installation requirements at central connections, often necessitating openings in the module columns, walls, or floor slabs to provide installation space. This leads to internal redecoration after the connections have been installed, reducing construction efficiency and increasing costs. The detachable tapered-head bolt connection is a new type of connection that enables rapid installation and removal of central connection in modular buildings. In this paper, the tensile and shear performance of the connection under static loading is investigated, and the failure mode, bearing capacity and load-displacement response of the connection are investigated. The results indicate that the tensile failure mode of the connection includes the pull-out of the tapered-head bolt or the fracture of weld seam of the upper corner base plate. The shear failure mode is characterized by the shearing of the bolt and bearing-yield failure in the upper corner base plate. It is obtained that the thickness of the upper corner base plate and side plate as well as the diameter of the tapered-head bolt are the key design parameters of the connection. It is recommended that the thickness of the side plate should not be greater than that of the baseplate, otherwise the material strength of the side plate will not be fully utilized and the economy of the connection design will be reduced. Furthermore, the simplified analytical model of tensile resistance of the connection is established, and the calculation formula for the tensile capacity of the connection is developed. Additionally, the study confirms that the shear capacity of the connection can be calculated using the method outlined in GB50017–2017. These research results provide a reliable design basis and reference for the engineering application of detachable tapered-head bolt inter-module connection.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113228"},"PeriodicalIF":5.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739299","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":"Testing, simulation and design of built-up cold-formed steel-lightweight concrete (CFS-LWC) composite beams subjected to elevated temperatures","authors":"Rohola Rahnavard ,&nbsp;Hélder D. Craveiro ,&nbsp;Rui A. Simões ,&nbsp;Luís Laím ,&nbsp;Aldina Santiago ,&nbsp;Leroy Gardner","doi":"10.1016/j.tws.2025.113212","DOIUrl":"10.1016/j.tws.2025.113212","url":null,"abstract":"<div><div>Cold-formed steel (CFS) products are lightweight, structurally efficient and highly versatile, making them suitable for a wide range of construction applications. Although studies have been performed to analyse the flexural behaviour of CFS composite beams at room temperature, their performance at elevated temperatures has yet to be investigated; this is, therefore, the focus of the present study. Through experiments, the structural fire performance of innovative built-up CFS-lightweight concrete (LWC) composite beams is examined. Two full-scale fire tests on simply-supported CFS-LWC composite beams are presented. The test setup, test procedure and obtained results, including the temperature evolution, fire resistance time and failure modes, are described. A numerical modelling study is also presented through which additional insights into the observed structural behaviour are gained. Comparisons between the experimental results and those determined according to EN 1994–1–2 design provision are presented. The results showed that, despite the studied CFS-LWC composite sections being beyond the scope of the code, good predictions of fire resistance were obtained.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113212"},"PeriodicalIF":5.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760046","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}

{"title":"Experimental study of non-reinforced thin-walled concrete-filled double skin steel tubular bridge columns with socket connection","authors":"Jiang Yi ,&nbsp;Fuxiang Zhu ,&nbsp;Wenjing Xu","doi":"10.1016/j.tws.2025.113231","DOIUrl":"10.1016/j.tws.2025.113231","url":null,"abstract":"<div><div>A novel non-reinforced thin-walled concrete-filled double skin steel tubular (NRTW-CFDST) structure with a socket connection is proposed for bridge columns. The advantages of this column include the absence of reinforcement, elimination of formwork installation and removal, and ease of customization, making it ideal for the rapid construction of short-line bridge piers with individualized size and height. Through experiments and finite element simulation analysis, the bending capacity and seismic performance of connection joints are investigated, and design recommendations for the novel column are provided. Experimental results indicate that the failure mode of the column is characterized by concrete crushing due to bending at the plastic hinge, and the full hysteresis curves indicate its good seismic performance. Importantly, the joints remained undamaged, demonstrating a significant reserve of bending capacity. For optimal performance, it is recommended to use a socket depth of 1.0 D to 1.2 D (D is the column section width) and a 6 mm thick base end plate. This configuration ensures adequate bending stiffness of the pier structure and a reasonable failure location at the plastic hinge.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113231"},"PeriodicalIF":5.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716199","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":"Nonlinear response of high-strength cold-formed steel built-up members subject to cyclic compression","authors":"Shin Rui Kho ,&nbsp;Adeline Ling Ying Ng ,&nbsp;Daniel Ting Wee Looi ,&nbsp;Hieng Ho Lau ,&nbsp;Emad Gad ,&nbsp;Krishanu Roy","doi":"10.1016/j.tws.2025.113233","DOIUrl":"10.1016/j.tws.2025.113233","url":null,"abstract":"<div><div>Cold-formed steel (CFS) built-up sections have attracted attention for their enhanced strength and stability over single channels. While previous research has focused on the axial behaviour of CFS built-up sections under monotonic compression, studies on their cyclic performance are limited. Cyclic actions can affect the material properties and potentially cause early failure, making it crucial to understand the cyclic behaviours of CFS built-up sections. This research examined the cyclic responses of G550 high-strength CFS built-up compression members through experimental and numerical investigations. Different built-up sections, such as open-lipped built-up sections (OL series) and closed-unlipped built-up sections (CU series), composed of various section sizes and screw spacings, were studied. These proposed parameters assessed the influence of the member slenderness and section slenderness on the CFS built-up sections with thin-walled profiles. The results demonstrated that the cyclic actions have little influence on the structural performance of the CFS built-up sections at the pre-peak stage. At the post-peak stage, a faster degradation in strength and stiffness was observed for specimens with greater member slenderness and section slenderness. Moreover, the increase in section slenderness leads to higher axial ductility for the CU series but minimal influence on the OL series. Furthermore, a greater member slenderness leads to smaller energy dissipation capacity, especially for the specimens with smaller section slenderness. The OL series is recommended to be designed as a strength-control element that provides structural stability and integrity, such as primary columns. In contrast, the CU series can be used as the sacrificial element to dissipate energy, such as lateral bracing in the framing system, to minimise the risk of catastrophic collapse subject to extreme loadings such as typhoons or earthquakes.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"212 ","pages":"Article 113233"},"PeriodicalIF":5.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716089","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}