Thin-Walled Structures最新文献

{"title":"Flexural behavior of aluminum alloy hub joints and simplified spatial beam-element modeling method","authors":"Xiao Hu ,&nbsp;Zhenggang Cao ,&nbsp;Jinxing Feng ,&nbsp;Yifan Ding ,&nbsp;Feng Fan","doi":"10.1016/j.tws.2025.113995","DOIUrl":"10.1016/j.tws.2025.113995","url":null,"abstract":"<div><div>To investigate the flexural behavior of aluminum alloy hub joints in spatial grid structures, four groups of bending tests were designed. Comparative analyses of flexural behavior under different loading directions were conducted, and a refined finite element model for out-of-plane bending was developed using ABAQUS to elucidate mechanical mechanisms. Meanwhile, a parametric analysis was carried out to examine the effects of wedge rate <em>w</em>, tube diameter <em>D</em>_c, and wall thickness <em>t</em> on out-of-plane flexural behavior. Results indicate: (1) The joint exhibits semi-rigid behavior in out-of-plane bending, while its in-plane bending can be treated as pinned; (2) The failure mode of in-plane bending manifests as buckling at the interface between insertion part and transition part, whereas out-of-plane bending induces three failure modes: transition part buckling, insertion part tensile fracture, and rib shear failure; (3) The failure process of out-of-plane bending sequentially comprises: elastic load-bearing stage of ribs, elastoplastic load-bearing stage of ribs, and primary load-bearing stage of transition part; (4) Reducing <em>w</em> while increasing <em>D</em>_c and <em>t</em> enhances out-of-plane flexural behavior. The stiffness sensitivity coefficient <em>ξ_K</em>_o of <em>D</em>_c is 6.21 times that of <em>t</em>, the bearing capacity sensitivity coefficient <em>ξ_M</em>_uo is 1.58 times that of <em>t</em> and 16.59 times that of <em>w</em>, and the rotation sensitivity coefficient <em>ξ_φ</em>_uo of <em>D</em>_c and <em>t</em> is 4.69 times that of <em>w</em>. Enhancing out-of-plane flexural performance should prioritize increasing <em>D</em>_c, supplemented by increasing <em>t</em>. Furthermore, accounting for the influence of the nonlinear transition part on member deformation, a method is established for enhanced simplified beam-element modeling using spring elements with length <em>L</em>_c, and deriving the <em>L</em>_c calculation formula. These results can serve as a basis for the design and implementation of aluminum alloy hub joints.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"218 ","pages":"Article 113995"},"PeriodicalIF":6.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221521","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":"Tailoring directional energy dissipation in zigzag-based origami metamaterials via strategic geometric gradients","authors":"Ruoqi He ,&nbsp;Yao Chen ,&nbsp;Wangjie Ye ,&nbsp;Zhenyu Chen ,&nbsp;Tianyu Xie ,&nbsp;Jian Feng","doi":"10.1016/j.tws.2025.113993","DOIUrl":"10.1016/j.tws.2025.113993","url":null,"abstract":"<div><div>Origami-inspired metamaterials, known for their programmable deformation modes and outstanding tessellation properties, have emerged as promising candidates for advanced impact mitigation. Here, we propose a strategy that integrates kirigami techniques with geometric gradients to enhance directional energy dissipation. By incorporating kirigami cuts into the classical Miura-ori metamaterial, we improve stress distribution uniformity. Additionally, strategic geometric gradients facilitate controllable, layer-by-layer collapse. Our findings demonstrate that this dual strategy enhances the structural energy-dissipation capacity in both crease-dominated and panel-dominated deformation directions. Parametric sensitivity analysis further reveals the interdependence between gradient designs and energy absorption performance, providing refined design guidelines for origami metamaterials with diverse collapse mechanisms. Compared to the conventional Miura-ori metamaterial of equivalent relative density, the strategic hybrid-gradient design significantly increases specific energy absorption while simultaneously reducing initial peak forces in different loading directions. We anticipate that these findings could extend to protective systems with unconventional shapes, opening new avenues for engineering adaptive, lightweight protective structures.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"218 ","pages":"Article 113993"},"PeriodicalIF":6.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097061","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":"Enhanced interlaminar fracture toughness of CFRP using UHMWPE fiber veils modified with polydopamine and graphene oxide","authors":"Xuming Yao,&nbsp;Junzhen Chen,&nbsp;Guoyu Yang,&nbsp;Jialiang Li,&nbsp;Shuo Cheng,&nbsp;Jianjun Jiang","doi":"10.1016/j.tws.2025.113990","DOIUrl":"10.1016/j.tws.2025.113990","url":null,"abstract":"<div><div>Carbon fiber-reinforced polymer (CFRP) laminates are prone to delamination due to their inherently low interlaminar fracture toughness. This study, for the first time, investigates the use of ultra-high molecular weight polyethylene fiber (PE) veils to enhance the interlaminar fracture toughness of CFRP and explores the influence of polydopamine (PDA) and graphene oxide (GO) on their toughening efficacy. PE, PDA-modified PE (PPE), and GO/PDA-modified PE (GPPE) veils with an areal density of 10 g/m² were fabricated using a wet-laying technique and subsequently introduced as interlayers in unidirectional CFRP laminates via a prepreg hot-pressing process. Mode I and Mode II interlaminar fracture toughness (G_Ic and G_IIc) of the CFRPs were evaluated using double cantilever beam and end-notched flexure tests, respectively. The results demonstrated that while all three PE veils improved the interlaminar fracture toughness compared to the pristine CFRP laminates without interlayers, the incorporation of the GPPE veil yielded the largest increase in G_Ic and G_IIc by 90.7 % and 69.8 %, respectively. Analysis of the toughening mechanisms revealed that PDA modification improved the interfacial adhesion between the PE fibers and the epoxy matrix, promoting fiber bridging and pull-out. The introduction of GO further contributed to the toughness through additional nanoscale mechanisms such as crack deflection and pinning, exhibiting a synergistic effect with PDA. This research presents an effective strategy for developing high-toughness CFRPs.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"218 ","pages":"Article 113990"},"PeriodicalIF":6.6,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097063","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":"On the Magnetically Tunable Free Damped-Vibration of L-Shaped Composite Spherical Panels Made of GPL-Reinforced Magnetorheological Elastomers: An Element-Based GDQ Approach","authors":"Peijun Zhang ,&nbsp;Zhen Wang ,&nbsp;Huaigu Tian ,&nbsp;Xiaojian Xi ,&nbsp;Xiaogang Liu","doi":"10.1016/j.tws.2025.113987","DOIUrl":"10.1016/j.tws.2025.113987","url":null,"abstract":"<div><div>In practical engineering applications, curved structures rarely conform to idealized rectangular or circular planforms and often involve far more intricate geometries. Among these, L-shaped spherical panels have emerged as a structurally significant form, found in subsystem interfaces, aerospace fuselage junctions, complex biomedical shells, and multifunctional architectural surfaces. This study explores the free damped-vibration behavior of such panels constructed from a graphene platelet (GPL)-reinforced magnetorheological elastomer (MRE) nanocomposite. Unlike conventional elastic matrices, the MRE base material exhibits time- and field-dependent viscoelastic behavior, influenced by both magnetic field intensity and ferromagnetic content. This behavior is mathematically formulated through an experimentally validated generalized Kelvin–Voigt-type model, tailored to represent the storage and dissipation characteristics of the matrix under dynamic excitation. The reinforcing particles are graded through the panel thickness. The effective elastic properties of the composite are homogenized using the Halpin–Tsai micromechanical model, accounting for the influence of GPL content and sizes. To address the geometric complexity, a hybrid element-based GDQ (generalized differential quadrature) approach is developed. The L-shaped spherical panel is subdivided into rectangular elements, each governed by equations derived using Hamilton’s principle, first-order shear deformation theory, and Sander’s strain-displacement relations. Discretization via quadrature nodes enables the GDQ method to transform the governing PDEs into an efficient algebraic system. The global system is constructed by enforcing both displacement and force continuity at shared nodes and applying appropriate boundary conditions. The proposed framework achieves excellent accuracy in capturing frequencies and loss factors, demonstrating its capability for efficient dynamic analysis of non-standard. In addition to validating the accuracy of the proposed approach against benchmark problems, the study reveals distinct mode-switching and mode-jumping phenomena triggered by changes in geometric parameters—highlighting the sensitivity of vibrational behavior to panel shape and reinforcing the need for precise modeling in advanced smart structures.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"218 ","pages":"Article 113987"},"PeriodicalIF":6.6,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097064","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":"Phase transition-based tunable phononic crystals and metamaterials: a review","authors":"Liangteng Guo ,&nbsp;Shaoyu Zhao ,&nbsp;Zhe Guo ,&nbsp;Yingyan Zhang ,&nbsp;Jie Yang ,&nbsp;Sritawat Kitipornchai","doi":"10.1016/j.tws.2025.113984","DOIUrl":"10.1016/j.tws.2025.113984","url":null,"abstract":"<div><div>Phononic crystals (PCs) and metamaterials (MMs) have emerged as innovative platforms for manipulating acoustic and elastic waves through tailored microstructures. However, their adaptability to dynamic environments is limited due to the conventionally fixed properties after fabrication, leading to the growing demand for tunable and reconfigurable structures. Phase transitions offer a promising mechanism to enable significant variations in the properties of PCs and MMs. Nevertheless, a comprehensive review of the phase transition-enabled strategies is urgently needed to summarize current advancements and guide future developments. This review systematically assesses recent theoretical and experimental progress in phase transition-based PCs and MMs, focusing on material systems including shape memory alloys (SMAs), shape memory polymers (SMPs), ferroelectric materials, and liquid-solid phase-change materials (PCMs). Key mechanisms are elaborated, including martensitic transitions, glass transitions, ferroelectric phase transitions, and solid-liquid phase transitions in various PCMs. Building on these mechanisms, state-of-the-art design strategies for enabling active wave manipulation and novel functional behaviors, employing SMA-based systems, SMP-based systems, ferroelectric phase-change systems, and solid-liquid phase-change systems, are critically reviewed. In addition, advanced modeling and fabrication techniques to predict the material properties of PCMs and fabricate desired structures are comprehensively discussed. Finally, future perspectives are highlighted to provide detailed guidelines for developing high-performance PCs and MMs.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"218 ","pages":"Article 113984"},"PeriodicalIF":6.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097484","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, numerical, and dimensionless analysis studies for the structural response of steel plates under repeated internal blasts","authors":"Haoqing Ding,&nbsp;Haocheng Tian,&nbsp;Kang Li,&nbsp;Yutao Hu,&nbsp;Changli Wang,&nbsp;Zhun Bai,&nbsp;Xin Zhang,&nbsp;Bingwen Qian","doi":"10.1016/j.tws.2025.113973","DOIUrl":"10.1016/j.tws.2025.113973","url":null,"abstract":"<div><div>Internal blasts are more destructive than air blasts due to the multiple reflection overlays of explosive shock waves in the confined space. This paper conducts experimental, numerical, and dimensionless analysis studies for the structural response of steel plates subjected to repeated confined blasts. A couple of experiments, including different charge masses, stand-off distances, and blast number, are conducted to investigate the response of steel plates to a confined blast device. Experimental results show that the deflection of the target plate close to the blast point was smaller. The progressive deflection is decreased for repeated blasts. Then, a numerical simulation model is built further to investigate the structural response characteristics for repeated confined blasts. Finally, an empirical model is proposed to predict the central permanent displacement of the target plate under repeated confined blasts. This model considers the material and structure parameters of the target plates, the charge parameters, the local properties of the blast loading, and the influence of the venting. Results show that this model can predict the midpoint displacements of the target plates well.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"218 ","pages":"Article 113973"},"PeriodicalIF":6.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097059","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":"Global buckling behaviour and design of stainless steel hexagonal hollow section columns","authors":"Yukai Zhong ,&nbsp;Ziyi Wang ,&nbsp;Ou Zhao","doi":"10.1016/j.tws.2025.113986","DOIUrl":"10.1016/j.tws.2025.113986","url":null,"abstract":"<div><div>Owing to their high load-carrying capacity, ease of constructability and superior corrosion resistance, stainless steel polygonal hollow section members have great potential to be used in practical engineering. However, the absence of relevant design codes hinders their engineering applications. To address this issue, this paper conducts experimental and numerical studies on the flexural buckling behaviour and resistances of stainless steel hexagonal hollow section columns. A testing programme was carried out on ten column specimens designed with different cross-section dimensions and member lengths, together with tensile coupon tests and initial geometric imperfection measurements. A numerical modelling programme was then performed to develop and validate finite element models based on the test results. The validated FE models were adopted to carry out parametric studies to generate further numerical data to supplement the test data, which were then employed for the evaluations of design rules set out in the European code, American specification and ASCE standard. The evaluation results generally revealed that the European code and American specification resulted in an acceptable level of accuracy and consistency in predicting the flexural buckling resistances of stainless steel hexagonal hollow section columns, although some resistances of columns with low member slendernesses were overestimated, while the ASCE standard provided rather unsafe resistance predictions. Finally, a revised ASCE design buckling curve was proposed.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"218 ","pages":"Article 113986"},"PeriodicalIF":6.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097416","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":"Development and performance analysis of boundary-reinforced carbon fiber-based buoyancy structures","authors":"Guocai Yu ,&nbsp;Dayao Meng ,&nbsp;Wendong Li ,&nbsp;Fanglin Cong ,&nbsp;Benxin Wang ,&nbsp;Hongyu Xiao ,&nbsp;Chengyang Wang ,&nbsp;Yang Jin ,&nbsp;Xi Zhu ,&nbsp;Linzhi Wu","doi":"10.1016/j.tws.2025.113965","DOIUrl":"10.1016/j.tws.2025.113965","url":null,"abstract":"<div><div>The current rescue depth for sea operations is typically limited to 450 meters, as efforts beyond this depth are generally considered impractical. Buoyancy materials, which occupy the largest volume in deep-submergence rescue vehicles, play a critical role in providing flotation and influencing the vehicles' operational endurance. In this study, a lightweight and high-strength carbon fiber-based buoyancy structure (CFBS) was developed to enhance the pressure resistance of underwater vehicles in rescue systems. The stress distribution and failure modes of the CFBS under hydrostatic pressure were systematically analyzed, with experimental results showing strong agreement with numerical simulations. Compared to CFBSs with uniform wall thickness, the boundary-reinforced design demonstrated a 57.67 % improvement in hydrostatic pressure resistance at comparable densities. The fabricated small-scale structural component demonstrated a density of 0.392 g/cm³ and a hydrostatic pressure strength of 17.99 MPa, while the large-scale structural component exhibited a density of 0.296 g/cm³ and a hydrostatic pressure strength of 12 MPa, outperforming other buoyancy materials of similar class. These findings provide a robust foundation for advancing composite material technologies in underwater applications.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"218 ","pages":"Article 113965"},"PeriodicalIF":6.6,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097521","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":"Modeling and analysis of underwater oscillation of a flexible biomimetic caudal fin driven by MFC based on ANCF","authors":"Youcheng Xue ,&nbsp;Liang Li ,&nbsp;Dingguo Zhang ,&nbsp;Wei-Hsin Liao ,&nbsp;Xian Guo ,&nbsp;Yongbin Guo","doi":"10.1016/j.tws.2025.113970","DOIUrl":"10.1016/j.tws.2025.113970","url":null,"abstract":"<div><div>With the deepening bionic fish research, a novel biomimetic fish design driven by smart materials has gradually emerged. When used as actuators, macro fiber composites (MFC) exhibit excellent flexibility and piezoelectric drive properties. Therefore, the flexible biomimetic fish based on MFC has broad application prospects. However, there are two problems that need to be solved: the multiphysics coupling (solid-fluid-electric) in flexible caudal fin and the electromechanical coupling of MFC actuators in the process of large swing swimming. In this paper, the caudal body-caudal fin (BCF) propulsion system driven by MFC is studied, and the main driving caudal fin is simplified into a substrate with MFC patches on both sides, and its dynamics model is derived by absolute nodal coordinate formulation (ANCF). The MFC constitutive model considering electromechanical coupling effect is introduced to calculate the electromechanical coupling of a caudal fin model. The fluid-structure coupling of the caudal fin model is calculated by using the theory of immersion boundary-lattice Boltzmann method. A five-layer element which considers the epoxy glue layer is used to address the deformation coupling issue. The generalized α method is used to solve the dynamic equations of the system, and the numerical simulation of the dynamic response of the caudal fin model under multiple physical fields is realized. Experimental validation demonstrates excellent agreement between theory and measurement, with 3.98% error in distal end displacement. This method can accurately characterize the response of MFC biomimetic fish under electric drive within a flow field. The research results of this paper have theoretical and application value for the design of flexible biomimetic fishes.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"218 ","pages":"Article 113970"},"PeriodicalIF":6.6,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097480","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":"Lightweight origami sandwich structures with gradient design for improved energy absorption capacity","authors":"Zhou Yang ,&nbsp;Jiakang Gan ,&nbsp;Fenglei Li ,&nbsp;Eric Li ,&nbsp;Bing Li","doi":"10.1016/j.tws.2025.113971","DOIUrl":"10.1016/j.tws.2025.113971","url":null,"abstract":"<div><div>Origami structures, as typical mechanical metamaterials, have garnered extensive attention due to their lightweight, high strength, and customizable mechanical properties, making them highly promising for applications in aerospace, automotive engineering, and protective equipment. However, many conventional origami structures, especially those based on uniform tessellation, face limitations in mechanical tunability and adaptability due to their relatively fixed folding patterns and limited capacity for graded deformation, which restrict their broader functional application. To overcome these limitations, we propose a controllable gradient origami sandwich structure design method, drawing inspiration from the hierarchical and gradient characteristics of natural materials. This approach integrates the Miura-origami folding pattern with gradient design principles. The mechanical properties of gradient origami sandwich structures are validated through finite element methods, experiments utilizing 3D printed physical models, and theoretical analysis. Results show that most gradient structures outperform their uniform counterparts, with the highest improvements in specific energy absorption (SEA) and mean compressive force (MCF) reaching 35 % and 41 %, respectively. The introduction of gradients can significantly modulate the internal stress propagation mechanisms and reconfigure the deformation modes of origami sandwich structures compared with non-gradient structure. Additionally, gradient structures exhibited higher peak forces and better energy absorption capabilities in three-point bending tests. These findings systematically highlight the influence of gradient design on the energy absorption and deformation behavior of origami sandwich structures, supported by theoretical analysis, numerical simulations, and experimental validation.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"218 ","pages":"Article 113971"},"PeriodicalIF":6.6,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097481","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}