Archives of Civil and Mechanical Engineering最新文献

The effect of waste glass incorporation on the high-temperature resistance of cement-based concrete 废玻璃掺入对水泥基混凝土耐高温性能的影响

IF 4.4 3区工程技术

Archives of Civil and Mechanical Engineering Pub Date : 2025-05-05 DOI: 10.1007/s43452-025-01206-6

Bo Wen, HuaiZheng Wang, Guanyi Gao, Lu Zhang, Yongkang Kang, Fan Zhang

{"title":"The effect of waste glass incorporation on the high-temperature resistance of cement-based concrete","authors":"Bo Wen, HuaiZheng Wang, Guanyi Gao, Lu Zhang, Yongkang Kang, Fan Zhang","doi":"10.1007/s43452-025-01206-6","DOIUrl":"10.1007/s43452-025-01206-6","url":null,"abstract":"<div><p>Waste glass concrete, as a solid waste building material, can alleviate resource waste and achieve carbon reduction in buildings. However, the high-temperature melting and softening characteristics of glass alter the damage pattern of concrete. To promote the application of waste glass concrete, exploring its fire safety is crucial. Research indicates that glass can be used to replace concrete aggregates or cementitious materials according to different particle sizes. According to the application type of glass in concrete, this paper demonstrates the influence of different substitution methods on concrete performance. Subsequently, the thermal properties of waste glass concrete were statistically analyzed, revealing that the low thermal conductivity of glass enhances the thermal insulation performance of concrete. Additionally, the influence mechanism of glass on concrete high-temperature damage from the perspectives of high-temperature melting and condensation of glass was summarized. The high-temperature damage behavior of waste glass concrete was systematically discussed in terms of appearance characteristics, mass loss, compressive strength, tensile strength, and other aspects. The results indicate that glass gradually begins to melt and soften after 600℃, allowing it to fill and heal concrete cracks and delay the rate of mechanical performance degradation, and is an environmentally friendly material with excellent high-temperature resistance. With the advocacy for low-carbon buildings, the study of glass concrete holds significant scientific significance and application value. Therefore, this article proposes some follow-up hot research topics based on existing research. </p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43452-025-01206-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of process parameters on dynamic and static load capacity of EN AW-2024-T3 aluminum alloy joints prepared by friction stir welding 工艺参数对EN AW-2024-T3搅拌摩擦焊铝合金接头动、静载荷能力的影响

IF 4.4 3区工程技术

Archives of Civil and Mechanical Engineering Pub Date : 2025-05-03 DOI: 10.1007/s43452-025-01204-8

Andrzej Kubit, Hamed Aghajani Derazkola, Wojciech Jurczak, Krzysztof Ochałek, Piotr Myśliwiec, Wojciech Macek, Olga Łastowska, Przemysław Podulka, Ján Slota

{"title":"Effects of process parameters on dynamic and static load capacity of EN AW-2024-T3 aluminum alloy joints prepared by friction stir welding","authors":"Andrzej Kubit, Hamed Aghajani Derazkola, Wojciech Jurczak, Krzysztof Ochałek, Piotr Myśliwiec, Wojciech Macek, Olga Łastowska, Przemysław Podulka, Ján Slota","doi":"10.1007/s43452-025-01204-8","DOIUrl":"10.1007/s43452-025-01204-8","url":null,"abstract":"<div><p>This study investigates the impact of friction-stir welding (FSW) process parameters on the mechanical performance and fracture behavior of EN AW-2024-T3 aluminum alloy joints. A series of static and dynamic mechanical tests were conducted on six welded samples, revealing that the joint strength and fracture characteristics are highly sensitive to FSW parameters, particularly tool rotational rate, pin length, and traverse speed. Sample III, which exhibited the optimal combination of parameters, achieved the highest static load capacity, reaching 98.5% of the raw material's strength. Dynamic testing further confirmed Sample III's superior performance, with the highest recorded load capacity and significant energy absorption, as evidenced by ductile fracture features and high surface roughness. In contrast, Sample V, characterized by an excessive pin length, showed the lowest static and dynamic strength, along with a brittle fracture mode. The surface topography and SEM analysis of fracture surfaces indicated that optimized FSW conditions promote a ductile fracture mode, enhancing joint toughness under dynamic loading. These findings underscore the critical role of process parameter optimization in improving the mechanical properties and fracture resistance of FSW aluminum joints, making them more suitable for applications subjected to static and dynamic loading.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43452-025-01204-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative analysis of nonlinear buckling and postbuckling in shear-deformable sandwich composite toroidal shell segments with diverse auxetic cores and CNT-reinforced face sheets 剪切变形复合材料环面壳段非线性屈曲和后屈曲的对比分析

IF 4.4 3区工程技术

Archives of Civil and Mechanical Engineering Pub Date : 2025-05-03 DOI: 10.1007/s43452-025-01203-9

Farzad Ebrahimi, Mohammadhossein Goudarzfallahi, Ali Alinia Ziazi

{"title":"Comparative analysis of nonlinear buckling and postbuckling in shear-deformable sandwich composite toroidal shell segments with diverse auxetic cores and CNT-reinforced face sheets","authors":"Farzad Ebrahimi, Mohammadhossein Goudarzfallahi, Ali Alinia Ziazi","doi":"10.1007/s43452-025-01203-9","DOIUrl":"10.1007/s43452-025-01203-9","url":null,"abstract":"<div><p>This study, for the first time, analyzes and compares the influence of diverse auxetic cores on the buckling and postbuckling behavior of shear-deformable auxetic-core sandwich-structured toroidal shell segments (TSSs) with carbon nanotube (CNT)-reinforced face sheets supported by a Kerr-type elastic foundation and subjected to external pressure. The CNTs are embedded in a polymer matrix throughout the face sheet thickness, either uniformly (UD) or as functionally graded (FG) distributions. The metamaterial core features four types of recently developed auxetic designs: (1) a 3D augmented re-entrant cellular structure, (2) an arc-type auxetic design inspired by the traditional re-entrant honeycomb structure, (3) a bio-inspired butterfly-shaped auxetic structure, and (4) a star-shaped auxetic structure. The Kerr-type elastic foundation is modeled using a three-parameter configuration consisting of a central shear layer and two spring layers on the top and bottom surfaces. The governing equations for the TSSs are derived using Reddy's third-order shear deformation theory (TSDT) and incorporate von Kármán-type geometric nonlinearity. A three-term deflection solution under simply supported boundary conditions is employed, with the Galerkin method used to establish the nonlinear load–deflection relationship. The effectiveness of the proposed approach is validated through comparative analysis with existing literature, demonstrating excellent agreement with theoretical results. A comprehensive parametric analysis is conducted to identify the auxetic core that offers the best buckling and postbuckling performance of sandwich TSSs under varying relative densities of the auxetic core structures, geometric parameters of the TSSs, and Kerr-type elastic foundation properties.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Valorisation of rice husk ash as an activator in the preparation of alkali-activated cements based on electric arc furnace slag 稻壳灰作为活化剂在电弧炉渣制备碱活性水泥中的价值评价

IF 4.4 3区工程技术

Archives of Civil and Mechanical Engineering Pub Date : 2025-05-03 DOI: 10.1007/s43452-025-01209-3

A. Muñoz-Castillo, P. J. Sánchez-Soto, D. Eliche-Quesada

{"title":"Valorisation of rice husk ash as an activator in the preparation of alkali-activated cements based on electric arc furnace slag","authors":"A. Muñoz-Castillo, P. J. Sánchez-Soto, D. Eliche-Quesada","doi":"10.1007/s43452-025-01209-3","DOIUrl":"10.1007/s43452-025-01209-3","url":null,"abstract":"<div><p>Rice husk ash (RHA) was employed as a silica source to produce an alternative sodium silicate solution through the dissolution of varying quantities of RHA in an 8 M NaOH solution. The solution was employed in the production of alkali-activated cements based on electric arc furnace slag (EAFS). Solutions were prepared with varying activator modules (Ms, molar ratio SiO₂/Na₂O) of 0.60, 0.85, 1.00, and 1.15. As control samples, slags were activated with 8 M NaOH (Ms = 0.0) and with 8 M NaOH in conjunction with commercial sodium silicate (Ms = 1.0). Mechanical, physical, mineralogical (XRD, FTIR), and microstructural (SEM/EDS) tests were conducted to characterize the obtained pastes. The results of the FTIR and SEM analyses indicated that the SiO₂/Na₂O ratio exerts a significant influence on the reaction products formed. At Ms values higher than 0.85, the predominant reaction product was observed to be a more cross-linked hybrid gel (N,C)-A-S-H. Lower modules resulted in the predominant formation of C-A-S-H gel and a more porous structure with lower mechanical properties. Pastes activated with the alternative RHA solution and Ms = 1.0 exhibited a composition, microstructure, and strength that was similar to or superior to those prepared with conventional commercial activators. </p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43452-025-01209-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Meso-analysis method for the compressive strength of steel fiber-reinforced recycled aggregate concrete: a six-phase numerical model 钢纤维增强再生骨料混凝土抗压强度的细观分析方法：六相数值模型

IF 4.4 3区工程技术

Archives of Civil and Mechanical Engineering Pub Date : 2025-05-01 DOI: 10.1007/s43452-025-01205-7

Libing Jin, Zhiyong Liu, Tian Wu, Tai Fan, Xiaoyan Liu, Pengfei Xu

{"title":"Meso-analysis method for the compressive strength of steel fiber-reinforced recycled aggregate concrete: a six-phase numerical model","authors":"Libing Jin, Zhiyong Liu, Tian Wu, Tai Fan, Xiaoyan Liu, Pengfei Xu","doi":"10.1007/s43452-025-01205-7","DOIUrl":"10.1007/s43452-025-01205-7","url":null,"abstract":"<div><p>This study investigates the impact of steel fibers on enhancing the mechanical properties of recycled aggregate concrete (RAC) at the mesoscale. A six-phase convex polygonal mesoscale model of steel fiber-reinforced recycled aggregate concrete (SF-RAC) was developed using a self-compiled program, incorporating steel fibers, aggregates, old mortar, new mortar, old interfacial transition zone (ITZ), and new ITZ. A mesoscale numerical analysis model was further proposed by developing FEM software to evaluate the compressive strength of SF-RAC, considering the bond-slip behavior between steel fibers and concrete through defined bond and damage parameters. The proposed numerical model was validated by comparison with experimental results. The influence of steel fiber length and diameter on the compressive strength of SF-RAC was explored based on meso-numerical method. The findings indicate that, at a fixed steel fiber content: (1) the larger diameters of steel fibers reduce the enhancement effect on SF-RAC, specifically, a 47.62% reduction in the lifting effect was observed when using steel fibers with a diameter of 0.5 mm, compared to those with a diameter of 0.2 mm; (2) the compressive strength exhibits a trend of initial decrease, followed by an increase, and then, a subsequent decrease as steel fiber length increases. These results provide a theoretical foundation for the engineering application and technical promotion of RAC.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Influences of temperature on carbon fiber bundles during the tensile process and associated piezoresistive model 温度对碳纤维束拉伸过程的影响及压阻模型

IF 4.4 3区工程技术

Archives of Civil and Mechanical Engineering Pub Date : 2025-04-30 DOI: 10.1007/s43452-025-01208-4

Shiji Sun, Dawei Zhang, Xuhua Lin, Jiarong Liu, ZhiYu Xie, Yifei Gong

{"title":"Influences of temperature on carbon fiber bundles during the tensile process and associated piezoresistive model","authors":"Shiji Sun, Dawei Zhang, Xuhua Lin, Jiarong Liu, ZhiYu Xie, Yifei Gong","doi":"10.1007/s43452-025-01208-4","DOIUrl":"10.1007/s43452-025-01208-4","url":null,"abstract":"<div><p>Carbon fiber bundles have been widely utilized in structural health monitoring due to their remarkable piezoresistive effect. However, the influence of temperature on their electrical and mechanical properties remains poorly understood. To address this knowledge gap, tensile tests were conducted on carbon fiber bundles at temperatures ranging from − 20 to 180 °C, and the change in contact resistance with temperature was investigated. The results indicate that the resistance change rate of the carbon fiber bundle is negatively correlated with temperature. A high degree of linearity and consistency was observed between the resistance change rate and the temperature of the carbon fiber bundle during multiple heating and cooling cycles. Within the temperature range of – 20 to 180 °C, the influence of temperature on the mechanical properties of the carbon fiber bundle is negligible. Temperature primarily affects the initial resistance and sensitivity coefficient of the carbon fiber bundle. Based on the test results, the traditional piezoresistive effect model of the carbon fiber bundle was modified to accurately predict the resistance and load changes of the carbon fiber bundle under strain at different temperatures. This study significantly improves the accuracy and universality of the piezoresistive effect model for carbon fiber bundles and provides a theoretical basis for structural health detection under varying temperature conditions.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Study on seismic behavior of reinforced concrete columns with UHPC formwork UHPC模板钢筋混凝土柱抗震性能研究

IF 4.4 3区工程技术

Archives of Civil and Mechanical Engineering Pub Date : 2025-04-27 DOI: 10.1007/s43452-025-01207-5

Xuehui You, Peng Wang, Qingxuan Shi, Chong Rong, Xinggui Zeng

{"title":"Study on seismic behavior of reinforced concrete columns with UHPC formwork","authors":"Xuehui You, Peng Wang, Qingxuan Shi, Chong Rong, Xinggui Zeng","doi":"10.1007/s43452-025-01207-5","DOIUrl":"10.1007/s43452-025-01207-5","url":null,"abstract":"<div><p>To investigate the seismic performance of reinforced concrete (RC) column with ultra-high-performance concrete (UHPC) formwork, three RC columns with UHPC formwork (abbreviated as URC columns) and one conventional RC column were fabricated. The influence of various assembly methods of UHPC formwork on the seismic performance of the specimens was examined through experiments. The assembly methods included bolt–angle steel connection, bolt connection, and epoxy mortar connection. In addition, a finite element model was developed to analyze the impact of various parameters on the bearing capacity and ductility of the URC columns. Finally, based on the plane section assumption, a method for calculating the bearing capacity of URC columns was proposed. The results showed that, at the final failure state of specimens, the joints of UHPC formwork connected by bolts and UHPC formwork connected by epoxy mortar showed noticeable damage. In contrast, the joints of the UHPC formwork connected with bolts–angle steel remained relatively intact. Moreover, the bearing capacity of URC columns with various connection methods exceeded that of RC column. Parameter analysis results indicated that as the strength of the normal concrete and the thickness of the UHPC formwork increase, the bearing capacity of URC columns gradually improved, while ductility decreased. Finally, the proposed calculation method effectively predicted the bearing capacity of URC columns, with the error between the calculated and experimental (simulated) values remaining under 20%. These findings suggest that UHPC formwork can significantly enhance the seismic performance of RC columns, making it a promising solution for improving the resilience of structures in earthquake-prone regions. Furthermore, the proposed calculation methods provide practical guidance for engineers to optimize the construction of URC columns in real-world seismic environments.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Recycled coarse aggregate sourced from demolition of large panel system buildings: fundamental properties and perspectives for application 从拆除大型板材系统建筑中获取的再生粗骨料：基本特性和应用前景

IF 4.4 3区工程技术

Archives of Civil and Mechanical Engineering Pub Date : 2025-04-24 DOI: 10.1007/s43452-025-01198-3

Seweryn Malazdrewicz, Tomasz Gawenda, Agata Stempkowska, Andrzej Żak, Krzysztof Adam Ostrowski, Barbara Gronostajska, Łukasz Sadowski

{"title":"Recycled coarse aggregate sourced from demolition of large panel system buildings: fundamental properties and perspectives for application","authors":"Seweryn Malazdrewicz, Tomasz Gawenda, Agata Stempkowska, Andrzej Żak, Krzysztof Adam Ostrowski, Barbara Gronostajska, Łukasz Sadowski","doi":"10.1007/s43452-025-01198-3","DOIUrl":"10.1007/s43452-025-01198-3","url":null,"abstract":"<div><p>Large Panel System (LPS) buildings constructed before 1990 constitute a significant portion of the national housing stock in many Central and Eastern European countries. While these buildings often exhibit flaws such as imperfect prefab dimensions and unstable construction joints, their concrete panels remain in satisfactory condition. The ongoing debate about whether to modernize or demolish these structures mirrors the trend in Western Europe, where LPS buildings have largely been dismantled—a trend likely to extend to Central and Eastern Europe. Despite this, little research has been conducted on recycling concrete panels from LPS demolitions. To mitigate future concrete waste accumulation, this study evaluates the properties of Recycled Coarse Aggregate (RCA) obtained from LPS demolition and assesses its potential use in concrete. The proposed RCA is compared to similar recycled coarse aggregate sources. Results indicate that LPS-derived RCA differs in several key aspects: it has lower density (2.24–2.47% compared to literature averages), lower water absorption (3.81–4.58%), lower mortar content (12.57–40.82%), and lower abrasion resistance (16.39–31.3 MDE). Due to its high water absorption and favorable grain shape (1.22 SF vs. 0.83 SF literature average), LPS-derived RCA is particularly suitable for concrete mixes with high water demand, offering potential benefits for fresh concrete properties.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43452-025-01198-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonlinear transient response analysis of revolution doubly curved shells 旋转双曲面壳体的非线性瞬态响应分析

IF 4.4 3区工程技术

Archives of Civil and Mechanical Engineering Pub Date : 2025-04-23 DOI: 10.1007/s43452-025-01187-6

Yu-Hao Fan, Gui-Lin She, Cheng Li

{"title":"Nonlinear transient response analysis of revolution doubly curved shells","authors":"Yu-Hao Fan, Gui-Lin She, Cheng Li","doi":"10.1007/s43452-025-01187-6","DOIUrl":"10.1007/s43452-025-01187-6","url":null,"abstract":"<div><p>At present, the rapid advancements in the high-end manufacturing industry have driven an increasingly urgent demand for corresponding theoretical research. Particularly in the domains of aviation, aerospace, and marine engineering, there is a substantial demand for the application of axisymmetric revolution doubly curved shells. Consequently, further research on these shells needs to be intensified. However, there is almost no research on the nonlinear transient response of revolution doubly curved shells undergoing spinning motion. This paper, for the first time, discusses the transient response characteristics with initial geometric imperfection. First, when establishing the model, the uniform distribution of graphene platelets and porosity distribution are considered. The displacement field is formulated in accordance with the first-order shear deformation shell theory, and the mechanical model is derived by incorporating von Kármán geometric nonlinearity to account for moderate rotational deformations in the shell structure. Then the Euler–Lagrange equation is used to obtain the equations of motion, and the modal function under traditional boundary conditions is introduced. Subsequently, we apply the Galerkin method to reduce the dimensionality. Finally, the corresponding vibration information is obtained using the Runge–Kutta method. In the present study, we first validate the natural frequencies of the model to ensure the rationality and accuracy of the analysis results. In addition, the influence of various parameters on nonlinear vibration behavior is studied in detail.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Role of martensite decomposition for achieving bi-lamellar microstructure in 3D printed Ti-6Al-4V 马氏体分解在 3D 打印 Ti-6Al-4V 中实现双层微结构中的作用

IF 4.4 3区工程技术

Archives of Civil and Mechanical Engineering Pub Date : 2025-04-23 DOI: 10.1007/s43452-025-01186-7

Roghayeh Mohammadzadeh, Mohammadreza Vahedi, Abhishek Ghosh, Ajay Kumar Mahanta, Akbar Heidarzadeh

{"title":"Role of martensite decomposition for achieving bi-lamellar microstructure in 3D printed Ti-6Al-4V","authors":"Roghayeh Mohammadzadeh, Mohammadreza Vahedi, Abhishek Ghosh, Ajay Kumar Mahanta, Akbar Heidarzadeh","doi":"10.1007/s43452-025-01186-7","DOIUrl":"10.1007/s43452-025-01186-7","url":null,"abstract":"<div><p>To obtain bi-lamellar microstructure, the Ti-6Al-4V alloy samples were produced using laser powder bed fusion and subsequently subjected to annealing heat treatment within the α + β region. The influence of annealing temperature (910°C, 960°C, 990°C), annealing time (0.5h and 4 h), and cooling rate (air, oil, and water quench) on the microstructure evolution, yield strength, ultimate tensile strength, and ductility at room temperature were examined. It was found that annealing at 910°C for 0.5 h with air cooling initiated the decomposition of initial martensite and the formation of β-transformed regions and secondary-α lamellas, while annealing at 990°C resulted in the creation of equiaxed grains with a lamellar microstructure. FESEM analysis revealed the presence of β-nano-precipitates in the meta-stable primary α phase in all annealed samples. Fast cooling in oil and water promoted the retention of a higher fraction of β nano-precipitates and suppressed the formation of secondary-α lamellas. The results showed that extending the annealing time to 4 h at 910°C was not sufficient to achieve achieving complete martensite decomposition. Notably, the decomposed martensite microstructure exhibited unfavorable characteristics in contrast to that of its as-built state.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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