Thin-Walled Structures最新文献_第6页

Parametric study on flutter performance of three-cable-supported flexible photovoltaic support structure

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-01-17 DOI: 10.1016/j.tws.2025.112975

Rui Zhou, Zidong Xu, Hao Wang

{"title":"Parametric study on flutter performance of three-cable-supported flexible photovoltaic support structure","authors":"Rui Zhou, Zidong Xu, Hao Wang","doi":"10.1016/j.tws.2025.112975","DOIUrl":"10.1016/j.tws.2025.112975","url":null,"abstract":"<div><div>Three-cable-supported flexible photovoltaic (PV) systems have broad application prospects due to their large span, economic efficiency, and strong adaptability to various terrains. Due to the low natural frequency of this structure and its cross-section being similar to that of a thin flat plate, it is prone to flutter instability. This work takes a typical three-cable-supported flexible PV support structure as an example and establishes a flutter analysis finite element model that considers aerodynamic characteristics. The flutter analysis is conducted using the full-order method, and the effects of key design parameters on the flutter critical wind speed (FCWS) are investigated. The design parameters include the pretension in cables, the height of triangular brackets, the mass and stiffness of PV modules, the span, and the damping ratio. Results indicate that the most effective method to increase the FCWS is to reduce the span. Increasing the pretension in the upper load-bearing cables significantly enhances the FCWS, while the pretension in the lower load-bearing cables has a limited effect on the FCWS. Increasing the height of the triangular brackets and reducing the mass of the PV modules can improve the flutter stability of the flexible PV support structure, while the stiffness of the PV modules has little impact on the FCWS. The damping ratio enhances the FCWS, demonstrating a linear correlation. The research findings can serve as a reference for future wind-resistant design of flexible PV support structures.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"210 ","pages":"Article 112975"},"PeriodicalIF":5.7,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143183226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enabling sequential logic leveraging time delays of thin-walled soft matter

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-01-16 DOI: 10.1016/j.tws.2025.112968

Nan Yang , Kunpeng Huang , Zheng Qian , Yangwu Zeng , Damiano Padovani

{"title":"Enabling sequential logic leveraging time delays of thin-walled soft matter","authors":"Nan Yang , Kunpeng Huang , Zheng Qian , Yangwu Zeng , Damiano Padovani","doi":"10.1016/j.tws.2025.112968","DOIUrl":"10.1016/j.tws.2025.112968","url":null,"abstract":"<div><div>Combinational logic is a common feature of modern engineered materials for general computation, but incorporating sequential logic is comparatively less advanced, which impedes further uses in environmental responses and adaptions. Sequential logic needs the history of the system outputs concomitantly with the present inputs, and we expect only one iteration of outputs and inputs for each operation. Thus, the main thrust of our research is to propose an original and general solution that utilizes the time delay effect of thin-walled soft matter inspired by origami structures to coordinate the work pace of the overall system. We create four basic sequential systems for ordered performance leveraging this device: a time delayer, a clock generator, a self-locking system (memory), and a pulse generator. Furthermore, we build five complex sequential systems based on the basic systems (a value assigner, a flip-flop, a shift register, a cycle shift register, and a counter). The novel contribution is making mechanical integrated circuit materials suitable for complex sequential control. Our approach is innovative, scalable to different sizes, and robust because it works only once after each input pulse. The inputs and outputs of our sequential systems can be force, light, or electricity for communication with other devices and general applicability.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"209 ","pages":"Article 112968"},"PeriodicalIF":5.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Discrete adaptive mesh refinement for equivalence modelling of planar beamlike periodic truss with rigid joints

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-01-16 DOI: 10.1016/j.tws.2025.112967

Xinyuan Li, Ti Chen, Dongping Jin

引用次数: 0

Effect of weave pattern on the low-velocity impact properties of 3D woven composites

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-01-16 DOI: 10.1016/j.tws.2025.112969

Yifan Zhang , Jiading Feng , Jiqiang Yan , Qiwei Guo , Zheng Sun , Daijun Zhang , Junhua Guo , Liuxu An , Xiaojia Wu , Li Chen

{"title":"Effect of weave pattern on the low-velocity impact properties of 3D woven composites","authors":"Yifan Zhang , Jiading Feng , Jiqiang Yan , Qiwei Guo , Zheng Sun , Daijun Zhang , Junhua Guo , Liuxu An , Xiaojia Wu , Li Chen","doi":"10.1016/j.tws.2025.112969","DOIUrl":"10.1016/j.tws.2025.112969","url":null,"abstract":"<div><div>In this study, three distinct 3D layer-to-layer interlock (LTL) woven composites characterized by Twill Structure (TS), Satin Structure (SS), and Stuffer Twill Structure (STS) were fabricated. These composites' low-velocity impact (LVI) resistance was evaluated using a drop-weight impact test. The macroscopic mechanical behavior of the composites under LVI was analyzed to understand the effects of yarn interweaving. Furthermore, the impact damage mechanisms were examined using 3D profilometer and micro-computed tomography (CT) inspection. The results indicate that the increased floating threads in the SS binder yarns led to an 11.72 % increase in Matrix crushing load, a 6.82 % rise in peak load, and an 11.51 % reduction in absorbed elastic energy compared to the TS. The incorporation of stuffer yarns in the STS increased the Hertzian failure load by 16.51 %, reduced the sustained contact time by 19.53 %, and decreased the maximum displacement by 17.32 % relative to the TS. The TS exhibited excellent impact resistance due to its dense yarn interweaving, which effectively dispersed the impact load. In contrast, the SS, with its longer floating threads and fewer interweaving points, facilitated energy dissipation but was more prone to stress concentration. The addition of stuffer yarns in the STS significantly improved interlaminar bonding and overall impact resistance, particularly regarding interlaminar shear strength and energy absorption efficiency.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"209 ","pages":"Article 112969"},"PeriodicalIF":5.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inverse multi-parameter analysis of oblique incidence laser interaction based on a multivariate thermal-mechanical response

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-01-16 DOI: 10.1016/j.tws.2025.112970

Wenqi Du , Te Ma , Lingling Lu , Hongwei Song , Yunhao Liu , Lekai Yang , Chenguang Huang

{"title":"Inverse multi-parameter analysis of oblique incidence laser interaction based on a multivariate thermal-mechanical response","authors":"Wenqi Du , Te Ma , Lingling Lu , Hongwei Song , Yunhao Liu , Lekai Yang , Chenguang Huang","doi":"10.1016/j.tws.2025.112970","DOIUrl":"10.1016/j.tws.2025.112970","url":null,"abstract":"<div><div>Laser identification of aircraft in service is beneficial for collecting environmental information and rapidly avoiding risks. In this paper, the thermal-mechanical response of honeycomb sandwich structures irradiated by the high-energy continues-wave laser is investigated. A physics-guided neural network method, based on the multivariate thermal-mechanical response is developed to solve the laser identification problems, especially the laser multi-parameter identification in complex oblique incidence. The dataset is built based on three thermal-mechanical characteristic parameters: the temperature variation rate, the generalized temperature gradient, and thermal strain. These parameters better characterize the laser irradiation process and work in concert with the physics-guided neural network to improve inversion accuracy. In this work, three parameters of the laser are simultaneously inverted: angle of incidence, laser diameter and laser power. The proposed method is verified through simulation analysis and laser irradiation experiments. The effects of the physics-guided loss function and multivariate information fusion are discussed, and it is found that the results based on the proposed method are significantly better than those based on the non-physics guided method. Additionally, the results from thermal-mechanical information fusion are superior to those obtained from the single temperature response.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"210 ","pages":"Article 112970"},"PeriodicalIF":5.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143183490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-patch isogeometric analysis for smart plates with distributed piezoelectric patches

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-01-15 DOI: 10.1016/j.tws.2025.112937

Tao Liu , Xiangrong Sun , Jinde Zheng , Lu Wang , Qingyun Liu , Tinh Quoc Bui

{"title":"Multi-patch isogeometric analysis for smart plates with distributed piezoelectric patches","authors":"Tao Liu , Xiangrong Sun , Jinde Zheng , Lu Wang , Qingyun Liu , Tinh Quoc Bui","doi":"10.1016/j.tws.2025.112937","DOIUrl":"10.1016/j.tws.2025.112937","url":null,"abstract":"<div><div>The previous isogeometric analysis (IGA) on piezoelectric smart structures mainly focused on plates and shells that were fully covered with piezoelectric materials. However, the piezoelectric materials in smart structures commonly exist in the form of patches that are locally attached to the substrate structures, in practical engineering applications. Thus, this paper aims to apply IGA to analyze the electro-mechanical coupled behaviors of distributed piezoelectric smart plates. The Nitsche-based non-conforming multi-patch technology is adopted to deal with the precision limitations associated with single-patch IGA for distributed piezoelectric smart plates. In accordance with first-order shear deformation theory (FSDT) and NURBS-based IGA, the non-conforming multi-patch governing equations for piezoelectric smart plates are then derived. In particular, the Nitsche’s method is adopted for addressing the non-conforming meshes and ensuring the continuity of the field variables on the coupling boundary between two adjacent patches. The developed methodology is further extended to analyze the fully-covered and distributed piezoelectric smart plates. Meanwhile, to enhance the general applicability of the method, the piezoelectric smart plates integrated with traditional piezoelectric ceramics and macro-fiber composite (MFC) materials are designed in numerical examples. Finally, comprehensive assessments for natural frequency and static response of piezoelectric smart plates are carried out and then compared with the existing reference solutions or the results calculated by ABAQUS software to demonstrate the effectiveness and accuracy of the developed method. These numerical examples validate that the proposed method is capable of addressing the limited accuracy of single-patch IGA in distributed piezoelectric smart structures.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"209 ","pages":"Article 112937"},"PeriodicalIF":5.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact angle-dependent residual burst strength of thin-walled composite pressure vessels under low-velocity impact

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-01-15 DOI: 10.1016/j.tws.2025.112963

Honghao Liu , Lei Zu , Qian Zhang , Guiming Zhang , Jianhui Fu , Helin Pan , Qiaoguo Wu , Xiaolong Jia , Lichuan Zhou

{"title":"Impact angle-dependent residual burst strength of thin-walled composite pressure vessels under low-velocity impact","authors":"Honghao Liu , Lei Zu , Qian Zhang , Guiming Zhang , Jianhui Fu , Helin Pan , Qiaoguo Wu , Xiaolong Jia , Lichuan Zhou","doi":"10.1016/j.tws.2025.112963","DOIUrl":"10.1016/j.tws.2025.112963","url":null,"abstract":"<div><div>Thin-walled composite pressure vessels exhibit a promising potential for energy storage, but they are vulnerable to barely visible damage from random impacts. Yet, angle-dependent damage mechanisms remain unclear, challenging the structural design to resist impact loadings. Herein, this study elucidates the residual burst strength of composite vessels under low-velocity impacts, guiding impact-resistant design at varying impact angles. The impact damage model based on a segmented golden-section search algorithm enhances computational efficiency and accuracy. Results show that matrix damage intensifies within helical layers under small-angle oblique impacts, while fiber damage consistently concentrates in hoop layers, with delamination between the hoop and helical layers decreasing from the outer layers inward. Furthermore, impacts at different angles shift potential failure locations within the vessel, with small-angle oblique impacts resulting in a low peak impact force. Notably, increasing the proportion of the helical layer enhances resistance to oblique impacts, while thicker hoop layers improve resistance to vertical impacts; at high energies, both layers should be thickened regardless of impact angle. This work not only offers new insights into angle-dependent impact damage but also contributes to the design for impact-resistant enhancement of advanced composite pressure vessels.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"209 ","pages":"Article 112963"},"PeriodicalIF":5.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Engineering compression constitutive model of closed-cell aluminum foams at high and low temperatures

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-01-15 DOI: 10.1016/j.tws.2025.112966

Shu-xiang Zhu , Ce Ji , Ren-geng Li , Qing-fu Zhang , Peng-fei Wang , Hua-gui Huang

{"title":"Engineering compression constitutive model of closed-cell aluminum foams at high and low temperatures","authors":"Shu-xiang Zhu , Ce Ji , Ren-geng Li , Qing-fu Zhang , Peng-fei Wang , Hua-gui Huang","doi":"10.1016/j.tws.2025.112966","DOIUrl":"10.1016/j.tws.2025.112966","url":null,"abstract":"<div><div>Due to excellent properties, such as lightweight, high specific strength, energy absorption ability, vibration reduction, sound insulation, heat insulation, and electromagnetic wave shielding, closed-cell aluminum foams have broad potential applications in diverse energy absorption fields. However, the comprehensive mechanical performance customization presents significant challenges due to the complexity of service environment temperatures and internal microstructures. Therefore, the X-ray computed tomography (CT) technology with a maximum resolution of up to 0.5 μm was used for three-dimensional (3D) geometric reconstruction and structural feature analysis of aluminum foams, such as porosity, pore diameter, and pore wall thickness, micropore. Then, quasi-static compression tests were conducted under high-temperature conditions (up to 600°C) and low-temperature conditions (down to -100°C) to study the deformation mode and energy absorption capacity. The results indicate that the position of the collapse deformation tends to move from the top to the bottom as the density increases. Aluminum foams exhibit a strengthening characteristic under low-temperature conditions but exhibit a softening characteristic under high-temperature conditions. The transition temperature from brittle mechanism to ductile mechanism is between 200 °C and 300°C. Finally, the engineering compression constitutive model was established, which can describe the mapping relationship between geometric structure, service temperature, and mechanical properties, providing an essential theoretical basis for the service performance evaluation of closed-cell aluminum foams in high-temperature and low-temperature environments.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"209 ","pages":"Article 112966"},"PeriodicalIF":5.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A machine learning-driven prediction of lower-bound buckling design load for cylindrical shells under localized axial compression

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-01-15 DOI: 10.1016/j.tws.2025.112960

Xinyi Lin, Peng Jiao, Huangyang Xu, Xinshuang Li, Zhiping Chen

{"title":"A machine learning-driven prediction of lower-bound buckling design load for cylindrical shells under localized axial compression","authors":"Xinyi Lin, Peng Jiao, Huangyang Xu, Xinshuang Li, Zhiping Chen","doi":"10.1016/j.tws.2025.112960","DOIUrl":"10.1016/j.tws.2025.112960","url":null,"abstract":"<div><div>Thin-walled cylindrical shells are extensively used across various fields because of their exceptional load-carrying efficiency. In practical applications, these structures are typically subjected to localized axial compression rather than the uniform axial compression considered in traditional research. A reliable and efficient buckling design method for cylindrical shells under such localized loads has not been developed to date. To address this challenge, a machine learning (ML) approach is proposed in this study for predicting the lower-bound buckling design load of cylindrical shells under localized axial compression. The artificial neural network (ANN) is selected as the ML model. Based on the modified energy barrier approach (MEBA), 500 samples are obtained by numerical simulations and their results are used to train the ANN model. The ANN model takes six geometric parameters, three material parameters, and one localized axial compression parameter as the inputs, while the lower-bound buckling load and the knockdown factor are the outputs. The feasibility and accuracy of the proposed ANN model are demonstrated by comparison with existing design codes and experimental results. The results suggest that this ML-based approach can fully exploit the load-carrying capacity of shells under localized axial compression, enabling more efficient and lightweight designs.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"209 ","pages":"Article 112960"},"PeriodicalIF":5.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AM-FEMU: An optimization method for additive manufacturing simulation parameters based on finite element model updating, utilizing three-dimensional deformation and melt pool temperature fields

IF 5.7 1区工程技术

Thin-Walled Structures Pub Date : 2025-01-15 DOI: 10.1016/j.tws.2025.112962

Ru Chen , Hanwen Xue , Qixian Zhong , Chenghao Zhang , Shiqing Li , Chuanqing Geng , Jiaye Zhao , Zhanwei Liu , Huimin Xie , Zhanfei Zhang

{"title":"AM-FEMU: An optimization method for additive manufacturing simulation parameters based on finite element model updating, utilizing three-dimensional deformation and melt pool temperature fields","authors":"Ru Chen , Hanwen Xue , Qixian Zhong , Chenghao Zhang , Shiqing Li , Chuanqing Geng , Jiaye Zhao , Zhanwei Liu , Huimin Xie , Zhanfei Zhang","doi":"10.1016/j.tws.2025.112962","DOIUrl":"10.1016/j.tws.2025.112962","url":null,"abstract":"<div><div>Accurate model parameters are crucial for reliable metal additive manufacturing (AM) simulations, which are essential for understanding AM material formation mechanisms, designing AM components, and controlling manufacturing processes. This study addresses the discrepancy between AM simulations and experimental results by developing an Additive Manufacturing Finite Element Model Updating (AM-FEMU) method. The AM-FEMU method updates and optimizes the simulation parameters based on the temperature field of the melt pool and the deformation field of the substrate during the AM process. Online measurements of three-dimensional displacement and melt pool temperature were conducted using three-dimensional sampling moiré and multi-spectral colorimetric temperature measurement technologies. By comparing these measurements with finite element (FE) simulation, the heat source parameters and thermal expansion coefficient were updated successfully. Verification tests confirmed that the updated parameters significantly improved the accuracy of residual stress in AM simulations compared to the original parameters. This method promotes the application of FEMU in metal AM simulations, further providing a deeper understanding of the physical mechanism in metal AM process.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"209 ","pages":"Article 112962"},"PeriodicalIF":5.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0