Archives of Civil and Mechanical Engineering最新文献

{"title":"A comprehensive study on the critical damping characteristics of vibrating functionally graded sandwich plates with general visco-Winkler–Pasternak foundations","authors":"Pham Van Vinh,&nbsp;Hamid M. Sedighi,&nbsp;Ömer Civalek","doi":"10.1007/s43452-025-01145-2","DOIUrl":"10.1007/s43452-025-01145-2","url":null,"abstract":"<div><p>In this study, a general visco-Winkler–Pasternak foundation will be created to analyze the vibrations of functionally graded sandwich plates. The visco-Winkler–Pasternak foundations serve as the base for the suggested viscoelastic foundation, which takes into account a new damping coefficient related to the shear layer’s shear interactions. The new viscoelastic foundation model can be easily reduced to other well-known visco- and elastic foundation models. Establishing the governing equations of motion is achieved using the simple higher-order shear deformation theory and Hamilton's principle. Applying analytical solutions to these equations involves solving them with different boundary conditions. The proposed model is validated through some comparison studies. To demonstrate the effects of certain parameters on the vibration behaviors of functionally graded sandwich plates resting on general visco-Winkler–Pasternak foundations, a parametric study is performed. The numerical results section presents some novel findings and emphasizes the importance of two damping coefficients on plate vibration behaviors.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513231","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}

{"title":"Rock breakages caused by an asymmetric cutter and a constant cross-section cutter acting on precuts","authors":"Jie Liu,&nbsp;Boyang Hu,&nbsp;Junlin Li,&nbsp;Yexing Chen,&nbsp;Wei Chen,&nbsp;Taoying Liu","doi":"10.1007/s43452-025-01161-2","DOIUrl":"10.1007/s43452-025-01161-2","url":null,"abstract":"<div><p>To reduce the cutting load and increase the cutting efficiency, laboratory and numerical tests involving a constant cross-section (CCS) cutter and an asymmetric cutter acting on precuts were performed. A laboratory study indicated that the asymmetric cutter consumes less energy than the CCS cutter under the same test conditions. In addition, the asymmetric cutter can ensure more effective rock breakages between precuts by generating oriented cracks. The numerical study results, which agree well with the laboratory test results for rock fractures, indicate that the plastic zones shrunken by the asymmetric cutter may be responsible for the decreased energy consumption. In addition, the dynamic stress evolution analysis reveals the fracture differences between the asymmetric cutter and the CCS cutter and further explains why the asymmetric cutter is more efficient.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489642","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}

{"title":"Experimental study on microstructure and tensile properties of high entropy alloy by laser melting deposition","authors":"Wen-Bo Zhang,&nbsp;Xue-Long Wen,&nbsp;Jia-Yu Li,&nbsp;Ya-Dong Gong","doi":"10.1007/s43452-025-01118-5","DOIUrl":"10.1007/s43452-025-01118-5","url":null,"abstract":"<div><p>The high-entropy alloy(HEA) samples FeCoNiCrTi_0.3, FeCoNiCrTi_0.5, FeCoNiCrAl_0.5 were designed and prepared by laser melting deposition (LMD), and their microstructure characterization were observed, physical phase analysis, and tensile properties were investigated. The results show that the microstructure at the top of the same LMD-HEA sample is smaller than that at the bottom. FeCoNiCrTi_0.5, FeCoNiCrTi_0.3, and FeCoNiCrAl_0.5 are all single-phase FCC structures, and the results of XRD and EBSD analysis are consistent. The fracture stroke of FeCoNiCrTi_0.3 is greater than that of FeCoNiCrTi_0.5, the tensile strength of FeCoNiCrTi_0.5 is larger but the section shrinkage is smaller. The maximum breaking load of FeCoNiCrTi_0.5 is slightly larger than that of FeCoNiCrAl_0.5, the tensile strength of FeCoNiCrTi_0.5 is larger than that of FeCoNiCrAl_0.5, the fracture shrinkage is smaller than that of FeCoNiCrAl_0.5, and there is little difference in the elongation. The number of dimples in the tensile fracture of FeCoNiCrTi_0.3 is significantly higher than that of FeCoNiCrTi_0.5, and the fracture of FeCoNiCrTi_0.5 is more flat and smooth. This study guides the study of the mechanical properties of LMD-HEA and is helpful for the high-performance design and integrated manufacturing of LMD-HEA composite components.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481270","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}

{"title":"Exploring the synergistic mechanisms of mechanical, microstructural morphology, and corrosion characteristics in inconel 718-AISI 430 dissimilar weldment joints using ERNiCrMo-4 and ER2209 fillers: a comparative performance analysis","authors":"Balram Yelamasetti,&nbsp;B. Tulasi Lakshmi Devi,&nbsp;B. Omprakash,&nbsp;Chilakamarri L. Aslesha,&nbsp;Sagar Shelare,&nbsp;Shubham Sharma,&nbsp;V. Nagabhushana Rao,&nbsp;Ehab El Sayed Massoud","doi":"10.1007/s43452-025-01155-0","DOIUrl":"10.1007/s43452-025-01155-0","url":null,"abstract":"<div><p>The comparative study is made on dissimilar weldments of Inconel 718 and ferritic stainless steel 430 joined by pulsed current tungsten inert gas welding process using ERNiCrMo-4 and ER2209 fillers. The base metals were joined with multiple welds passes by keeping pulse frequency (4 Hz) constant. The samples were examined for internal defects using X-ray radiography along with visual inspection. To understand the weldability of two different fillers, the mechanical properties were assessed by conducting a tension test as well as the hardness measurement. The macro/microstructures were revealed at various zones using an optical microscope with different magnifications. Further, for measuring the corrosion rate at fusion zone, the weld surface area of 0.1257 cm² was submerged in a 3.5% NaCl solution. The weld strength of 542 MPa was observed for ERNiCrMo-4 weldment whereas 469 MPa was observed for ER2209 filler weldment. Higher yield strength to weld strength was observed in ERNiCrMo-4 filler weldment than in the ER2209 filler weldment. ERNiCrMo-4 filler weld exhibited better hardness (198 HV) at the weld zone than the ER2209 filler weld (185 HV). The presence of a fine-grained structure at the interface of ferritic stainless steel 430 provides evidence of efficient blending and solidification in ERNiCrMo-4 filler weld. Whereas the elongated grains and secondary phases could potentially reduce the strength of ferritic stainless steel 430 in ER2209 filler weld. The corrosion resistance of ER2209 weldment (1.117 mm/year) is higher than the ERNiCrMo-4 weldment (1.353 mm/year) because of the presence of fine grain structures along with higher dense filler alloy elements.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465952","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}

{"title":"Mechanical fracture of lattice structures fabricated by selective laser sintering","authors":"Mohammad Reza Khosravani,&nbsp;Sören Bieler,&nbsp;Kerstin Weinberg,&nbsp;Tamara Reinicke","doi":"10.1007/s43452-025-01149-y","DOIUrl":"10.1007/s43452-025-01149-y","url":null,"abstract":"<div><p>The current study is focused on the static and dynamic behavior of different 3D-printed lattice structures fabricated by selective laser sintering (SLS) technique. To this end, body-centered cubic and face-centered cubic lattice structures were designed and printed using polyamide 12 (PA 12) material. A series of compression tests were performed on the lattice specimens under static loading conditions. We used the conventional split Hopkinson pressure bar (SHPB) at the impact speed of 12 m/s to determine the dynamic behavior of 3D-printed structures under high strain rate. In experimental practices, a high-speed camera was utilized as non-contact optical technique to document the process from initial impact till the specimen failure. In addition, finite element models were developed to determine the dynamic mechanical response of the lattice models. The experimental results indicated that the compressive strength increased with the loading rate. It confirmed the strain rare sensitivity of the studied PA 12. The results of this study can be employed to enhance the design of 3D-printed lattice structures for their further engineering applications.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s43452-025-01149-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446629","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}

{"title":"Effect of power on the microstructure and mechanical properties of 1500 MPa martensitic steel joints in laser-assisted friction stir welding","authors":"Shuhao Zhu,&nbsp;Xiangxiang Zhu,&nbsp;Wenyuan Lv,&nbsp;Junqi Chen,&nbsp;Yufeng Sun,&nbsp;Lihong Wu,&nbsp;Hidetoshi Fujii,&nbsp;Shaokang Guan","doi":"10.1007/s43452-025-01148-z","DOIUrl":"10.1007/s43452-025-01148-z","url":null,"abstract":"<div><p>This study employs laser-assisted friction stir welding (FSW) to join martensitic steels, aiming to produce defect-free welds. A comparative analysis was conducted to examine how varying laser power influences the evolution mechanisms in different weld zones and enhances joint mechanical properties. The experiments demonstrated successful defect-free welds across a range of laser powers. With increasing laser power, the stir zone (SZ) expanded, and the hierarchical martensitic structure grew progressively larger. At 250 W, the SZ exhibited block tempered martensite due to extended tempering, whereas strip tempered martensite formed at other power levels. The thermo-mechanically affected zone (TMAZ) exhibited a reduction in ferrite content of up to 24.0% as laser power increased, along with increases in the kernel average misorientation (KAM) value and the fraction of deformed grains, which rose by up to 28.3% and 86.2%, respectively. In the heat-affected zone (HAZ), martensite tempering facilitated the precipitation of fine Fe₃C particles, which became more spherical morphology and grew in diameter by up to 59.0%. At 750 W, the FSW joints and SZ achieved the highest ultimate tensile strength (UTS), with increases of up to 8.4% and 9.2%, respectively. These improvements were attributed to minimal ferrite content in the TMAZ and reduced tempering in the SZ.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446375","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}

{"title":"A lightweight deep learning model DICNet3+ for large deformation measurement in digital image correlation","authors":"Yaoliang Yang,&nbsp;Lingyun Qian,&nbsp;Chaoyang Sun,&nbsp;Jiaqiao Zhang,&nbsp;Yinghao Feng,&nbsp;Jingchen Liu","doi":"10.1007/s43452-025-01147-0","DOIUrl":"10.1007/s43452-025-01147-0","url":null,"abstract":"<div><p>Accurate deformation measurement is essential for evaluating material performance in complex mechanical testing. Although the traditional digital image correlation method is widely used, it faces limitations, such as boundary instability and erroneous data due to speckle pattern tearing, especially in large deformation scenarios. To address these challenges, this study proposes a lightweight deep learning model DICNet3+ , which is based on a modified UNet3+ architecture incorporating depthwise separable convolutions and convolutional block attention modules. These enhancements improve feature extraction while minimizing the number of parameters, enabling accurate prediction of displacement fields in large deformation scenarios. A comprehensive dataset consisting of both real and simulated speckle patterns, and a weighted hybrid loss function that combines root mean square error and average endpoint error were developed to train and validate the model. The results demonstrated that the DICNet3+ model significantly outperformed existing deep learning-based DIC models in terms of accuracy, robustness, and generalization. Additionally, the DICNet3+ model provided reliable predictions even in regions with erroneous data or along boundaries and showed significant computational efficiency compared to ARAMIS software in compression experiments, particularly when GPU acceleration was used. This work made DICNet3+ a viable solution for large deformation measurements in engineering applications.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438648","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}

{"title":"Fusion of rotation and translation measurements to improve mass identification in beam structures","authors":"Piotr Adam Bońkowski,&nbsp;Piotr Bobra,&nbsp;Zbigniew Zembaty","doi":"10.1007/s43452-025-01152-3","DOIUrl":"10.1007/s43452-025-01152-3","url":null,"abstract":"<div><p>Mass identification of vibrating structures is part of complex and often numerically inefficient inverse problems of structural dynamics. This paper investigates the application of novel rotation rate sensors to improve experimental mass identifications in rod structures. For this purpose, translational and rotational vibration measurements are used in the modal analyses and the model updating techniques. Numerical simulations were conducted with various added mass configurations investigated, followed by an extensive experimental campaign on a steel beam in free-free conditions. It is demonstrated that including the rotational degrees of freedom in the model updating technique dramatically improves the effectiveness of mass localisation and quantification. This positive effect is particularly pronounced when a limited number of modes is available from modal extraction.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438718","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}

{"title":"Bond–slip behavior of 1.4362 duplex stainless steel bar embedded in concrete","authors":"Xiao Ge,&nbsp;Tai-Lin Liu,&nbsp;Yan-Hui Liu,&nbsp;Zhi-Guo Sun,&nbsp;Yu-Qing Yang,&nbsp;Mohammad M. Kashani,&nbsp;Dong-Sheng Wang","doi":"10.1007/s43452-025-01142-5","DOIUrl":"10.1007/s43452-025-01142-5","url":null,"abstract":"<div><p>Stainless steel reinforcement is widely used in reinforced concrete structures due to its good corrosion resistance and mechanical properties. In this work, a set of pullout tests on 20 types of specimens are presented. Tensile tests on stainless steel rebars with different diameters and carbon steel rebars are conducted to determine the mechanical properties of rebars. Compressive tests on cubic concrete specimens with different grades are conducted to determine the mechanical properties of concrete. The design of specimens for pullout tests considers the effects of concrete grade, rebar material, rebar diameter, specimen shape, bond length, concrete cover length, rebar position, and stirrups. The damage observation is recorded. The experimental results are compared with the models provided by the Chinese code for the design of concrete structures (GB/50010-2010). With the experimental data, the coefficients of the model are modified by linear fitting. The comparison of bond–slip curves between experimental data and the modified code model is presented. Experimental results indicate that bond strength increases with increasing concrete grades, bar diameter, bond length and concrete cover depth. However, the bond strength between stainless rebar and concrete is smaller than that of carbon steel rebar and concrete. The modified model can produce a better prediction of the bond–slip relation between stainless rebar and concrete.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423265","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}

{"title":"Pulsed GTAW joint of P92 steel and Inconel 625: microstructure and mechanical properties","authors":"Sachin Sirohi,&nbsp;Amit Kumar,&nbsp;Manohar Singh,&nbsp;Dariusz Fydrych,&nbsp;Chandan Pandey","doi":"10.1007/s43452-025-01153-2","DOIUrl":"10.1007/s43452-025-01153-2","url":null,"abstract":"<div><p>In the present work, the relationship between microstructure and mechanical properties has been investigated for the dissimilar welded joint of P92 steel and Inconel 625, fabricated using the pulsed current gas tungsten arc welding (GTAW) process. Microstructural investigation revealed that the pulsed current resulted in finer equiaxed dendrites in the bulk weld metal, while columnar dendrites were observed in the weld metal near the interface. A more uniform distribution of the fine secondary phases was observed in FESEM study. The EDS study of the inter-dendritic areas showed alloying element segregation throughout the weld metal, with higher density near the interface. This segregation led to the formation of secondary phases, specifically MC-type carbides (NbC, TiC), which was confirmed by the EDS analysis. The characterization of the interface between P92 steel and ERNiCrMo-3 filler weld revealed the presence of a filler-deficient zone, marked by features such as islands, peninsulas, and unmixed zones. Elemental diffusion and segregation of Nb, Mo, and Ti at the interface were also confirmed through EDS analysis. Tensile testing demonstrated acceptable tensile properties of the welded joint at room temperature, with a tensile strength of 764 ± 8 MPa and elongation of 33 ± 1%, with the sample failing from the P92 base metal. Significant hardness variations were observed along the welded joint, with the most notable changes occurring in the P92 heat-affected zone (HAZ). A maximum hardness of 420 HV was recorded in the coarse-grained HAZ of P92, while the inter-critical HAZ of P92 showed a minimum hardness of 215 HV. In addition, considerable hardness variation was noted within the weld metal, corresponding to each welding pass as well as across the transverse direction of the welded joint. The maximum and minimum hardness values in the weld metal were 261 ± 9 and 239 ± 13 HV, corresponding to the center and capping passes, respectively, with an average hardness of 250 HV. The Charpy toughness test also indicated acceptable results, with an impact energy value of 176 ± 8.5 J. The study also provides a detailed discussion on the relationship between microstructure and mechanical properties, highlighting how microstructural features influence the mechanical performance of the welded joint.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":"25 2","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423264","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}