Thin-Walled Structures最新文献

{"title":"Shear elastic buckling of corrugated steel plate shear walls with stiffeners considering torsional rigidity","authors":"Ruo-Min Wu,&nbsp;Chao-Qun Yu,&nbsp;Ling-Qi Wang,&nbsp;Jing-Zhong Tong","doi":"10.1016/j.tws.2024.112646","DOIUrl":"10.1016/j.tws.2024.112646","url":null,"abstract":"<div><div>This paper conducted theoretical and numerical investigations on shear elastic buckling formulas of stiffened corrugated steel plate shear walls (SCSPSWs) considering torsional rigidities of stiffeners. Firstly, based on the orthotropic plate theory and the energy method, a theoretical model for the derivation of elastic buckling coefficients was established, introducing the torsional strain energy term of the stiffeners. On this basis, the variation law of the elastic buckling coefficient of the walls concerning the stiffener positions was studied, determining the optimal layout of the stiffeners. The formula for calculating the elastic buckling coefficient at any stiffener layout was provided. Furthermore, based on the stiffeners arranged in the optimal layout, the transition torsional rigidity of the stiffeners was determined, and the formulas for the elastic buckling coefficient of the SCSPSW with stiffeners considering torsional rigidity were proposed, in which the enhancement of torsional constraints provided by the stiffeners was measured by an enhancement factor. Finally, eigenvalue buckling analyses were performed based on finite element models to validate the theoretical analysis results on the optimal stiffener layout and elastic buckling coefficient.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"206 ","pages":"Article 112646"},"PeriodicalIF":5.7,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587051","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":"Bending behaviors of 3D printed sandwich structures with functionally graded porous lattice cores","authors":"Meiling Fan ,&nbsp;Tao Zeng ,&nbsp;Rina Wu ,&nbsp;Yuhua Cui ,&nbsp;Guodong Xu ,&nbsp;Xiaohong Wang ,&nbsp;Su Cheng ,&nbsp;Jue Zhao","doi":"10.1016/j.tws.2024.112655","DOIUrl":"10.1016/j.tws.2024.112655","url":null,"abstract":"<div><div>A novel graded porous lattice core sandwich structure is presented to achieve a balance between lightweight and high mechanical performance for materials. An analytical model is proposed to investigate the bending responses of graded porous lattice core sandwich structures by utilizing the homogenization and dehomogenization method. A comprehensive parametric investigation on the mechanical behaviors of the graded lattice sandwich structures is conducted in order to design and optimize these materials. The precise control of porosity is implemented utilizing 3D printing techniques in this study. The theoretical results are validated by the experiments using 3D printed samples. It is found that mechanical properties can be improved through optimization of pore gradient distribution in the lattice core while maintaining a light weight of the sandwich structures. These findings offer valuable insights for designing tailored sandwich structures that are suitable for a diverse range of engineering applications.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"206 ","pages":"Article 112655"},"PeriodicalIF":5.7,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663924","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":"Numerical study on the effects of alloying variations on the crushing behaviour of an aluminium profile","authors":"Marcos Fernandez,&nbsp;Miguel Costas,&nbsp;Odd Sture Hopperstad,&nbsp;David Morin","doi":"10.1016/j.tws.2024.112618","DOIUrl":"10.1016/j.tws.2024.112618","url":null,"abstract":"<div><div>The effects of variations in the chemical composition of an aluminium alloy AA6005 on the axial crushing and bending behaviour of a double chamber extruded profile are investigated by shell-based finite element analyses. A novel sequential modelling method, including nanostructure modelling, virtual tensile testing and localisation analyses, is used to determine the yield strength, work-hardening, and ductility of several variants of the AA6005 alloy. The data obtained from the models are used to calibrate the parameters of an isotropic elastic–plastic constitutive model and an uncoupled damage criterion. Explicit finite element analyses of axial crushing and three-point bending of the double chamber extruded profile are conducted for all variants of the AA6005 alloy in temper T6. By comparing the results of the finite element analyses with existing experimental data, the results reveal how variations in the chemical composition significantly influence the structural integrity of the extruded aluminium profile in axial crushing and bending.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"206 ","pages":"Article 112618"},"PeriodicalIF":5.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664002","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":"Isogeometric flutter analysis of a heated laminated plate with and without cutout","authors":"Wenliang Yu ,&nbsp;Rongshen Guo ,&nbsp;Yuhao Zhao ,&nbsp;Mingfei Chen","doi":"10.1016/j.tws.2024.112652","DOIUrl":"10.1016/j.tws.2024.112652","url":null,"abstract":"<div><div>Understanding the flutter characteristics of heated laminated plates, both with and without cutout, is crucial. This study presents the first exploration of flutter analysis in a thermal environment for a laminated plate featuring a cutout. To facilitate this study, the motion equations of the heated laminated plate with a cutout are derived using the first-order shear deformation theory (FSDT), incorporating a nonlinear term. Employing the isogeometric method combined with multi-path coupling technology, we establish accurate geometric and solution domains for the laminated plate. The effects of the thermal stresses and the aerodynamics calculated by the linear piston theory are considered. The accuracy and effectiveness of the proposed model are validated through several comparisons with ANSYS results and existing solutions. Additionally, the study examines the impact of key parameters on flutter characteristics, including thermal conditions, number of layers, lay-up angles, inflow angles, and cutout dimensions. The insights gained from this research will serve as a valuable benchmark for future analyses and design concerning flutter characteristics.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"206 ","pages":"Article 112652"},"PeriodicalIF":5.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663926","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 investigation on hysteretic properties and applications in beam-column connections of shape memory alloy plates","authors":"Yi Su ,&nbsp;Jin Di ,&nbsp;Xuhong Zhou ,&nbsp;Bin Han ,&nbsp;Fengjiang Qin ,&nbsp;Long Hu ,&nbsp;Jie Wang","doi":"10.1016/j.tws.2024.112650","DOIUrl":"10.1016/j.tws.2024.112650","url":null,"abstract":"<div><div>Shape memory alloy (SMA) plates have demonstrate significant application prospects in seismic structures owing to their excellent mechanical behaviour and section adaptability. In this study, the mechanical properties and manifestations of SMA plates, particularly their cyclic tension-release behaviour, were systematically investigated. Analysis results of peak strength, self-centring capacity, and energy dissipation capacity showed that thickness, temperature, and loading protocol affect the hysteretic properties of SMA plates. Furthermore, an effective training scheme of constant 4 % tensile strain, which can significantly increase the ultimate strength and self-centring capacity, was suggested for SMA plates to withstand cyclic tensile loads. Subsequently, a beam-column connection equipped with SMA plates was designed, and a set of quasi-static tests and numerical validations were conducted. The results verified the excellent self-centring capacity of the SMA plates, and the superiority and potential of applying SMA plate to aseismic structures were confirmed. Simultaneously, the SMA plates exhibited a lower energy dissipation capacity than the commonly used Q160 and ALA plates, which indicates that paralleling with other energy dissipation members is beneficial for improving the hysteretic properties of structures.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"206 ","pages":"Article 112650"},"PeriodicalIF":5.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663992","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 cyclic behavior of Q1100 ultra-high strength steel H-section compressive-bending members about strong-axis","authors":"Yun Zhang,&nbsp;Lu Yang,&nbsp;Kelong Xu","doi":"10.1016/j.tws.2024.112651","DOIUrl":"10.1016/j.tws.2024.112651","url":null,"abstract":"<div><div>Q1100 refers to ultra-high strength steel (UHSS) with a nominal yield strength of 1100 MPa. Hysteretic tests were conducted on seven Q1100 UHSS H-section welded columns to assess their hysteretic performance. The hysteretic performance was evaluated through hysteresis curves, damage phenomena, energy dissipation, ductility, and load-carrying capacity. The impact of the width-to-thickness ratio and axial pressure ratio on the hysteretic behavior was also investigated. A validated finite element model was utilized to analyze the hysteresis behavior, influencing factors, and the applicability of Eurocode 3 width-to-thickness ratio limits, resulting in proposed seismic design recommendations.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"206 ","pages":"Article 112651"},"PeriodicalIF":5.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587052","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":"A rationalized macroscopic failure criterion of composite woven fabrics for airship structures","authors":"Longlong Chen,&nbsp;Wujun Chen","doi":"10.1016/j.tws.2024.112647","DOIUrl":"10.1016/j.tws.2024.112647","url":null,"abstract":"<div><div>Composite woven fabrics are increasingly employed in architecture and aerospace for their excellent properties, such as lightweight, high specific strength, large surface area, and satisfactory deployability. The strength behavior is essential for various membrane structures as structural failure is serious. However, an accurate, simplified, and universal failure criterion has not been reported due to the inherent complexities of composite woven fabrics. This paper thus studies the tensile strength behaviors of airship fabrics and proposes a rationalized macroscopic failure criterion (Chen-Chen criterion) based on theoretical analysis and experimental observations. The generalized Chen-Chen criterion inherently satisfies the conditions of symmetry, dimensionless, and uniaxial tensile strength (UTS) boundary, with a maximum absolute deviation of only 1.34 % for two airship fabrics. Additionally, the UTS-based criteria were derived particularly for flexible plain-weave polyesters to avoid laborious and costly biaxial strength tests. The average deviations of constant and linear Chen-Chen criteria are 6.01 %, 4.91 %, while that of the Norris criterion reaches 13.34 %. Furthermore, the numerical implementation of the Chen-Chen criterion was demonstrated by biaxial tensile simulations. The failure strength and location predicted by the numerical analysis show good consistency with the experimental results.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"206 ","pages":"Article 112647"},"PeriodicalIF":5.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572871","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":"Test and simulation of high temperature resistant polyamide composite with single lap single bolt connection","authors":"Wei Zhao ,&nbsp;Chenchen Lian ,&nbsp;Wenxu Zhang ,&nbsp;Hongfei Zhang ,&nbsp;Tao Zhang ,&nbsp;Peiyan Wang ,&nbsp;Zhufeng Yue","doi":"10.1016/j.tws.2024.112649","DOIUrl":"10.1016/j.tws.2024.112649","url":null,"abstract":"<div><div>The advancement of next-generation aerospace vehicles has presented new requirements and challenges for ensuring the structural integrity of aircraft components in extreme environments. Consequently, the utilization of high temperature resistant polyamide composite materials has become pivotal in the manufacturing of aerospace vehicle parts that operate under high temperatures (250 °C). As a critical connection technology for these materials, the mechanical behavior of bolted connection structures under high temperatures requires further investigation. In this paper, a combination of experimental and numerical simulation is used to investigate the load carrying capacity and failure mechanism of T700/BMP316 composite bolted joints at room temperature and 250 °C. The experimental results show that the ultimate load carrying capacity of the structure at 250 °C is only 13.1 % lower than that of the room temperature environment, indicating that the temperature softening effect of such composites is not significant. Scanning electron microscope (SEM) and computed tomography (CT) results indicate that the structural damage modes were the crushing of the hole edge fibers and matrix due to the extrusion by the bolts, as well as the interlaminar delamination damage. Temperature effects were taken into account for the composite principal structure and finite element modeling was performed using a combination of Pinho criterion and Cohesive model. Numerical simulations allow accurate prediction of the load-displacement response and damage pattern throughout the damage evolution phase. The high temperature test results and the developed finite element model involved in this study can support the design of new-generation aerospace vehicles.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"206 ","pages":"Article 112649"},"PeriodicalIF":5.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572872","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":"Stretch-induced wrinkling analysis and experimental validation of creased membranes","authors":"Wang Zhong,&nbsp;Baoyan Duan,&nbsp;Jingli Du","doi":"10.1016/j.tws.2024.112644","DOIUrl":"10.1016/j.tws.2024.112644","url":null,"abstract":"<div><div>Creases and wrinkles are crucial factors affecting the accuracy of membrane structures. In this paper, we study the stretch-induced wrinkling of creased membrane based on a proposed planar crease model by characterizing the crease as an orthotropic rigid strip with effective bending stiffness and initial stress. A control equation of wrinkling of a stretched rectangular membrane with a vertical crease is deduced to understand the crease-wrinkle interaction. Then, a set of scaling laws for the wrinkles is discussed in detail, and it is concluded that the ratio of the bending stiffness of the crease to that of the membrane is the key influence factor. Furthermore, the analysis reveals that wrinkling in the small-strain stage is a localized wrinkling behavior independent of the crease parameters. The wrinkling wavelength and amplitude at large strains decrease with increasing crease angle. Finally, experiments verify the correctness and validity of the theoretical model and analytical method.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"206 ","pages":"Article 112644"},"PeriodicalIF":5.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572869","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 energy absorption and mechanical properties of porous Ti-6Al-4 V alloys with gradient disordered cells fabricated by laser powder bed fusion","authors":"Rusheng Zhao ,&nbsp;Shiyue Guo ,&nbsp;Jian Wang ,&nbsp;Bin Li ,&nbsp;Fan Zhang ,&nbsp;Donggen Yang ,&nbsp;Xuezheng Yue ,&nbsp;Xiangyu Guo ,&nbsp;Huiling Tang","doi":"10.1016/j.tws.2024.112632","DOIUrl":"10.1016/j.tws.2024.112632","url":null,"abstract":"<div><div>Additive manufacturing (AM) has revolutionized the production of porous metals, greatly improving control over their structural properties and offering unprecedented advantages in lightweight applications and energy absorption. Balancing energy absorption and compressive strength in ordered and disordered porous structures is challenging due to shear deformation and deformation mechanisms. This study investigates the mechanical and energy absorption properties of porous Ti-6Al-4 V alloys with gradient disordered cells fabricated using laser powder bed fusion (LPBF). The compressive response of samples with different regularities (<em>R</em>) and varying layers of disordered cells was analyzed through quasi-static compression experiments and finite element simulations. The results indicate that introducing a disordered cell gradient significantly enhances energy absorption by preventing the formation of shear bands observed in porous structures with ordered cell structures. When the regularity (<em>R</em>) is 0.8, 0.4, and 0.2 with one or two layers of disordered cells, mechanical properties are optimized and characterized by a balance between compressive strength and energy absorption. It is significant that, while preserving or enhancing compressive strength, the energy absorption of the material can be augmented substantially. Specifically, porous Ti-6Al-4 V (<em>R</em> = 0.8, <em>L4</em>) achieves an energy absorption increase of up to 154.9kJ/m³, which represents a dramatic enhancement of approximately 245.0 % over the regular porous structure (<em>R</em> = 0 or <em>L0</em>), which absorbs only 44.9 kJ/m³. Compared to ordered and disordered porous structures, the disordered cell gradient demonstrates significant potential in tuning the mechanical properties of porous metals, thereby advancing their applications in aerospace, biomedical, and protective fields.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"206 ","pages":"Article 112632"},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561263","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}