Thin-Walled Structures最新文献

{"title":"Radiative energy transfer model for high-frequency vibration analysis of functionally graded saturated porous beams","authors":"Yitao Xing ,&nbsp;Qiang Zhong ,&nbsp;Haibo Chen","doi":"10.1016/j.tws.2025.113227","DOIUrl":"10.1016/j.tws.2025.113227","url":null,"abstract":"<div><div>This paper presents an efficient approach for the high-frequency response prediction of finite functionally graded (FG) saturated porous beams based on the radiative energy transfer method (RETM). So far, although extensive research has been conducted on the dynamic analysis of FG saturated porous beams, study on the high-frequency vibration characteristics remains unreported. In this paper, we fill this gap in two main aspects. First, to consider the pore pressure, we use Biot theory instead of Hook’s law to derive the motion-governing equations of FG saturated porous beam, and based on which we analyse the wave propagation characteristics of FG saturated porous beam which are important for high-frequency vibration analysis. Second, based on the RETM, we establish an energy flow model suitable for high-frequency vibration analysis of FG saturated porous beams. Numerical examples show that the proposed approach can accurately predict the energy distributions of saturated porous beams, and the effects of porosity distribution patterns, the porosity coefficient, and the Skempton coefficient on vibration responses are observed.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113227"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760047","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":"Experimental and numerical investigation on the aging behavior of CFZnL composites in salt spray environment","authors":"Jingang Huang ,&nbsp;Yutong Liu ,&nbsp;Yuliang Hou ,&nbsp;Kang Yang ,&nbsp;Jianwei Shi ,&nbsp;Liang Meng ,&nbsp;Thaneshan Sapanathan","doi":"10.1016/j.tws.2025.113225","DOIUrl":"10.1016/j.tws.2025.113225","url":null,"abstract":"<div><div>This study develops a class of novel carbon-fiber-Zinc-alloy-laminated (CFZnL) composites, and investigates the modulus after salt spray aging. Experimental salt spray aging and tensile tests have been sequentially performed on CFZnL composites and conventional CFRP composites, to assess the aging behavior and residual tensile modulus. It has been observed that Zn alloy layer significantly enhances the aging-resistance due to moisture absorption. In addition, a multiscale modeling approach is proposed to predict the aging behavior and moduli of CFZnL and CFRP composites. Microscale models have been established to obtain the effective diffusion coefficients and effective properties of CFRP layers. Moreover, residual properties of CFRP and Zn alloy layers are calculated using an exponential degradation model. Then, they are introduced in the macroscale model for the tensile simulation. The numerical results concur well with the experimental ones, validating the accuracy of the multiscale modeling approach. It indicates that CFZnL composites with double-side Zn alloy layers possess superior aging-resistance than others in salt spray environment. Finally, the damage mechanisms are analyzed for the aged CFRP and CFZnL composites via experimental observations.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113225"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760064","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":"Theoretical prediction of buckling deflection for I-shaped steel beams reinforced with bamboo scrimber stiffeners (BSSs)","authors":"Zihan Gong ,&nbsp;Yang Wei ,&nbsp;Jiyang Yi ,&nbsp;Jiawei Chen ,&nbsp;Mingmin Ding ,&nbsp;Hui Liu","doi":"10.1016/j.tws.2025.113263","DOIUrl":"10.1016/j.tws.2025.113263","url":null,"abstract":"<div><div>In response to the buckling instability problem of I-shaped steel beams, a new method of using bamboo scrimber stiffeners (BSSs) to constrain the lateral-torsional buckling (LTB) of the steel beam is proposed. This method uses epoxy adhesive to combine BSSs and pure I-shaped steel beam (PIS) together to work synergistically. 12 full-scale beam specimens were tested and a series of refined finite element models (FEMs) corresponding to PIS and I-shaped steel beams reinforced with BSSs was established to investigate the Mises stress distribution in unstable regions that are difficult to obtain in experiments, which will contribute to buckling analysis. It was found that as the spacing between BSSs decreased, the moment enhancement in the critical buckling point was relatively small, ranging from 5.84 % to 11.94 %, as compared to PIS. However, the critical buckling deflection was significantly improved, with up to 167.40 % increase compared to PIS. Numerical and experimental results both show that BSSs alter the instability behavior of I-shaped steel beams, shifting rapid LTB failure to a slower lateral torsion of the web plate and localized buckling of compressed flanges between BSSs. To further expand the application scenarios, 17 additional simulation specimens were established to study the reinforcement effect of BSSs with varying lengths and quantities on beams with different clear spans. According to the experimental and numerical results, a critical buckling deflection prediction formula for I-shaped steel beam reinforced with BSSs was derived, which achieved good results and provided theoretical basis for practical engineering applications.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113263"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767833","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":"Recent advances in machine learning guided mechanical properties prediction and design of two-dimensional materials","authors":"Runkai Liu ,&nbsp;Shu Lin ,&nbsp;Jing Wan ,&nbsp;Le Li ,&nbsp;Guoqiang Zhang ,&nbsp;Huasong Qin ,&nbsp;Yilun Liu","doi":"10.1016/j.tws.2025.113261","DOIUrl":"10.1016/j.tws.2025.113261","url":null,"abstract":"<div><div>Two-dimensional (2D) materials have garnered significant attention due to their exceptional physical properties and potential for diverse applications. Recent advances in the machine learning (ML) based methodologies have opened new avenues for predicting and designing the mechanical behaviors of these materials. This review comprehensively examines ML-based methodologies that predict key mechanical properties including fracture strength, elastic modulus, and Poisson's ratio, by integrating intrinsic structural features, defect characteristics, external loading conditions, and environmental influences. The ML-based ways of crack propagation and fracture mechanisms are thoroughly explored. Furthermore, high-throughput screening, reverse design and model+data based intelligence design of 2D materials are highlighted for accelerating the discovery and engineering of 2D materials with tailored mechanical properties. Emerging challenges such as the development of universal descriptors and potentials, multi-field coupling analysis, the integration of experimental, theoretical, and simulation datasets, and interpretable ML-based approach are discussed alongside future perspectives aimed at the design of high-performance 2D materials.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113261"},"PeriodicalIF":5.7,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760065","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":"Strengthening of circular austenitic stainless steel tubular columns with CFRP under eccentric loading: Experimental and numerical investigations","authors":"Galal M. Al-Mekhlafi ,&nbsp;Mohammed A. Al-Huri ,&nbsp;Abdelrahman El-Tohfa ,&nbsp;Mohammed A. Al-Osta ,&nbsp;Ahmed H. Alwathaf","doi":"10.1016/j.tws.2025.113256","DOIUrl":"10.1016/j.tws.2025.113256","url":null,"abstract":"<div><div>This study investigates the structural behavior of CFRP-wrapped circular stainless-steel tubular (CSST) columns subjected to combined axial compression and bending loads. Eighteen cold-formed stainless steel tubular specimens with varying diameter-to-thickness ratios, CFRP wrapping configurations, and load eccentricities were tested experimentally. Results reveal that CFRP wrapping significantly enhances the load-bearing capacity and ductility of CSST columns by mitigating local buckling and delaying failure. Finite element models were developed and validated using ABAQUS software to complement experimental findings. A comprehensive parametric study explored additional factors influencing structural behavior. Based on the combined experimental and numerical results, a design model was proposed by incorporating the effect of CFRP wrapping into the Continuous Strength Method (CSM) framework. The proposed model demonstrated high accuracy in predicting failure loads and moments, offering a practical approach for the structural design of the strengthened CSST. This work advances the application of CFRP in enhancing the performance of structural stainless-steel components.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113256"},"PeriodicalIF":5.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760061","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":"Inverse design of cylindrical curved shell metasurface for elastic wave modulation based on PSO-BP model","authors":"Jialin Wu ,&nbsp;Lingyun Yao ,&nbsp;Hui Chen","doi":"10.1016/j.tws.2025.113253","DOIUrl":"10.1016/j.tws.2025.113253","url":null,"abstract":"<div><div>Nowadays, there is a lack of systematic and comprehensive theory regarding the propagation of elastic wave on cylindrical curved shells metasurface, largely due to the complex three-dimensional structural parameters on cylindrical curved shells. As a new powerful tool for predictive modeling, machine learning method can be learned and updated constantly, and is being used to design complex metasurface structures for controlling elastic wave propagation. In this work, an inverse design method was proposed to deal with the design of cylindrical curved shell metasurface with different curvatures. Firstly, machine learning technique was utilized to construct a mapping between structural parameters and properties of elastic wave propagation. Transmittance and phase shift properties under multiple outputs are initially predicted using multiple variable geometric parameters as inputs to machine learning network. Subsequently, particle swarm optimization (PSO) algorithm is utilized on original network to improve the quality of the predictions. Finally, the constructed models are used to design the unitary metasurface with high transmittance and special phase shifts, which are combined to realize the various modulation functions of elastic wave. Experimental results disclose that the network trained based on a large data set has high prediction accuracy. It is demonstrated the proposed method can not only be used to explore more elastic wave propagation laws in cylindrical curved shells, but also lays foundation for future functions of vibration isolation, energy focusing related to these structures.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113253"},"PeriodicalIF":5.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760048","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":"Customized preparation of super martensitic stainless steel from duplex stainless steel and low alloy steel through double-wire arc additive manufacturing","authors":"Weiyao Tian ,&nbsp;Haoyu Kong ,&nbsp;Chencun Zhu ,&nbsp;Chunyu Wang ,&nbsp;Qi Sun ,&nbsp;Yibo Liu ,&nbsp;Qingjie Sun","doi":"10.1016/j.tws.2025.113252","DOIUrl":"10.1016/j.tws.2025.113252","url":null,"abstract":"<div><div>Super martensitic stainless steel (SMSS), known for its excellent properties, was widely used in marine engineering, hydropower, and petrochemical fields. This study employed double-wire arc additive manufacturing, utilizing ER2209 and ER70-G welding wires as raw materials to fabricate a thin-walled structure with SMSS composition instead of traditional martensitic stainless steel welding wire or powder. This objective of this study was to explore a convenient material preparation method that reduced dependence on raw materials, thereby enhancing production efficiency and lowering costs. The produced SMSS exhibited a well-formed appearance with a uniform composition and no macro defects. The microstructure of the top layer consisted of δ-ferrite and fresh martensite, while other areas displayed a microstructure of martensite and austenite due to thermal cycle effects. The average microhardness of the prepared SMSS was 377.9 ± 15.5 HV, with a tensile strength of 1235.5 ± 11.4 MPa and an elongation of 16.7 ± 1.0 %, demonstrating a favorable combination of mechanical properties. During the deformation of the fabricated SMSS, a phase transformation from austenite to martensite occurred, resulting in material strengthening. This innovative material processing method may facilitate the customized preparation of high-performance SMSS thin-walled structures.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113252"},"PeriodicalIF":5.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760062","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":"Higher strength of double-double over traditional quad laminates in equal-stiffness design of single lap joint","authors":"Yizhou Huang ,&nbsp;Cheng Qiu ,&nbsp;Zongkai He ,&nbsp;Yile Hu ,&nbsp;Guangyong Sun ,&nbsp;Jinglei Yang","doi":"10.1016/j.tws.2025.113255","DOIUrl":"10.1016/j.tws.2025.113255","url":null,"abstract":"<div><div>Double-Double (DD) is a novel laminate design concept that not only reduces design variables and simplifies the manufacturing process but also exhibits unique homogenization properties. While theory suggests that for any QuaDriaxial (QUAD or QD) laminate, DD can provide a corresponding laminate configuration with equivalent stiffness, the mechanical behavior of their Single-Lap Joint (SLJ) still requires further investigation. In this study, a DD SLJ equivalent to the quasi-isotropic QD SLJ commonly used in fuselage structures is designed by ensuring equivalence in the in-plane stiffness matrix. While the experimental results show nearly identical in-plane stiffness, the tensile strength of the DD SLJ is approximately 13 % higher than that of the Quad SLJ. Additionally, DD SLJ exhibit reduced out-of-plane deformation compared to Quad SLJ. Both theoretical and numerical analyses are conducted to elucidate the underlying mechanisms responsible for the superior mechanical behavior of DD SLJ. The findings indicate that the observed differences are primarily due to variations in bending stiffness, despite identical in-plane stiffness matrices. The results further demonstrate that the smaller bending deformation of DD laminates leads to reduced interfacial peeling forces, making DD SLJ less susceptible to failure. Finally, a comparison of different staggered ways of DD laminates indicated no significant differences in strength or stiffness. The study demonstrates that DD SLJ, designed with equivalent in-plane stiffness matrices, not only achieve the same tensile stiffness as QD SLJs but also exhibit higher strength. This highlights the great potential of DD laminates for application in the single-lap joints of aircraft structures.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113255"},"PeriodicalIF":5.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767834","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":"Magnetic field and magnetic induction spatial distribution and stress-magnetic variation models of natural gas pipelines magnetized","authors":"Zhaoyang Han,&nbsp;Guangyuan Weng,&nbsp;Xinlei Xing,&nbsp;Yao Zhai,&nbsp;Le Wang,&nbsp;Xiyu Zhu,&nbsp;Bo Wang","doi":"10.1016/j.tws.2025.113254","DOIUrl":"10.1016/j.tws.2025.113254","url":null,"abstract":"<div><div>This study investigates the numerical relationship between the magnetic properties of pipeline steel and the stress-magnetic induction in natural gas pipelines through magnetic simulation and experimental research, based on multi-physical field coupling. A finite-element models for magnetomechanical interactions in natural gas pipelines, constructed from steel grades X52, X56, X60, X65, X70, and X80, was developed utilizing COMSOL Multiphysics software. The simulations were conducted under seven different internal pressures (0 MPa, 2 MPa, 4 MPa, 6 MPa, 8 MPa, 10 MPa, and 12 MPa) and three pipe diameters (300 mm, 406 mm, and 670 mm). These simulations facilitate the analysis of magnetic field and magnetic induction distributions within the spatial area of the pipelines. The study also examined the technical parameters for magnetization saturation across the various steel grades. A numerical relationship curve of stress and magnetic induction relative to pipeline length, termed the <em>σB-L</em> curve, was established. The reliability of the simulation results and the numerical model was validated using pipelines made from X80 and X70 steel grades. The findings confirm that the characteristics of the saturated magnetic field distribution and magnetic induction in natural gas pipelines are consistent across different steel grades. A consistent linear relationship exists between the peak internal pressure of the pipeline and the magnetic flux density. Additionally, under locally uniform magnetic fields, the trends in stress and magnetic induction density changes are parallel both along the length and across the cross-sectional direction of the pipeline. The <em>σB-L</em> curve accurately represents the magnetic coupling relationship. Experimental validation indicated that the <em>σB-L</em> curve derived from the numerical simulations provides high accuracy in assessing the magnetic-coupling stress, with a maximum error of less than 5%. This establishes a reliable theoretical basis for non-destructive, online stress detection in operational natural gas pipelines.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113254"},"PeriodicalIF":5.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767831","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":"Transverse coupled resonances for ultrathin lightweight acoustic metamaterials","authors":"G. Sal-Anglada ,&nbsp;D. Yago ,&nbsp;J. Cante ,&nbsp;J. Oliver ,&nbsp;T. Pàmies ,&nbsp;D. Roca","doi":"10.1016/j.tws.2025.113219","DOIUrl":"10.1016/j.tws.2025.113219","url":null,"abstract":"<div><div>Innovations in acoustic metamaterials increasingly focus on optimizing sound insulation capabilities while addressing manufacturing and integration challenges. Previous studies have explored coupled resonance mechanisms in multilayered structures, where resonators are aligned along the direction of wave propagation. While these approaches provide enhanced sound transmission loss (STL) over broadband frequency ranges, they often require increased panel thickness to achieve the desired insulation. This study introduces a novel approach based on transverse coupled resonances, where the resonators are arranged in the same plane, i.e., perpendicular to wave propagation, by exploiting bending effects in the metamaterial design. By implementing these mechanisms in a single layer, the resulting panel’s thickness and weight are significantly reduced, simplifying the manufacturing process. The proposed transverse coupled-resonances acoustic metamaterial (TCAM) is validated numerically and experimentally using impedance tube measurements, with prototypes achieving 60 dB of attenuation over a broad frequency range around 1000 Hz. Further parametric studies show the potential for enhanced sound attenuation at even lower frequencies with thinner and lighter designs, paving the way for customizable soundproofing solutions tailored to specific application requirements.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"213 ","pages":"Article 113219"},"PeriodicalIF":5.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739370","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}