Engineering Fracture Mechanics最新文献_第7页

Advancements in cold extrusion anti-fatigue manufacturing technology for connecting holes

IF 4.7 2区工程技术

Engineering Fracture Mechanics Pub Date : 2025-02-07 DOI: 10.1016/j.engfracmech.2024.110764

Nian Wan , Biao Zhao , Wenfeng Ding , Qiang He

{"title":"Advancements in cold extrusion anti-fatigue manufacturing technology for connecting holes","authors":"Nian Wan , Biao Zhao , Wenfeng Ding , Qiang He","doi":"10.1016/j.engfracmech.2024.110764","DOIUrl":"10.1016/j.engfracmech.2024.110764","url":null,"abstract":"<div><div>Requirements for connection reliability, stability, and service of components in the design and manufacturing process for aeronautical equipment are progressively growing stricter. The utilization of cold extrusion technology significantly contributes to the improvement of hole strength in the anti-fatigue manufacturing process of perforated specimens. The assessment of part quality frequently depends on residual stress, representing the mechanical stress encountered by materials during machining processes. Understanding the underlying mechanism of extrusion-induced residual stress is equally crucial. This comprehensively study aims to analyze the influential factors in the generation of residual stress, with the objective of elucidating the multifaceted mechanism behind anti-fatigue processing. Firstly, a comprehensive analysis of the mechanisms and influential factors governing residual stress during extrusion is presented, followed by a concise overview of commonly employed detection techniques. Subsequently, the micro-deformation behavior of typical materials under various extrusion methods is investigated and a comprehensive analysis is conducted on their characteristics and application range. Finally, the gain of extrusion and the mechanism of anti-fatigue manufacturing technology are further elucidated from the perspectives of stress, plastic deformation, surface integrity, and fatigue life. This present research contributes to enhancing the understanding of residual stress in hole extrusion and accurately predicting their developmental trajectory.</div></div>","PeriodicalId":11576,"journal":{"name":"Engineering Fracture Mechanics","volume":"314 ","pages":"Article 110764"},"PeriodicalIF":4.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Analysis of sensitivity factors on CJB mechanical behavior from specimen scale to engineering scale

IF 4.7 2区工程技术

Engineering Fracture Mechanics Pub Date : 2025-02-07 DOI: 10.1016/j.engfracmech.2024.110673

Bin Gong , Yongyi Wang , Xu Chen , Wencheng Song , Kaikai Wang , Jiang Yu

{"title":"Analysis of sensitivity factors on CJB mechanical behavior from specimen scale to engineering scale","authors":"Bin Gong , Yongyi Wang , Xu Chen , Wencheng Song , Kaikai Wang , Jiang Yu","doi":"10.1016/j.engfracmech.2024.110673","DOIUrl":"10.1016/j.engfracmech.2024.110673","url":null,"abstract":"<div><div>The mechanical behaviors of columnar jointed basalts (CJBs) are affected by various sensitivity factors and show significant cross-scale differences. Employing the representative models ranging from individual CJB specimens to tunnels, the sensitivity factors including joint mechanical characteristics, mesoscopic rock constitutive relations, and model boundaries are meticulously considered. Combined with digital image correlation, these models are rigorously tested against the <em>meso</em>-damage mechanics, statistical strength theory, and continuum mechanics. Subsequently, a comprehensive examination ensues, delving into the spectrum of influencing factors, fracture mechanisms, and sensitivity analyses of CJBs. Notably, it emerges that the mechanical anisotropy of CJB specimens is most susceptible to boundary condition, while joint mechanical property is more sensitive than mesoscopic rock constitutive relation. Furthermore, the specimen height-width ratio exhibits relative insensitivity, whereas the excavation stage is relatively sensitive for CJB tunnel. The proportional distance of subsidiary joint set manifests a lesser impact compared to the other parameters. Besides, from specimen scale to tunnel scale, the sensitive factor rankings on the mechanical behavior of related models are summarized. These achievements not only enhance our understanding of cross-scale CJB mechanics but also provide crucial knowledge for experimental setup, engineering design, and lifecycle management of CJB-involved projects.</div></div>","PeriodicalId":11576,"journal":{"name":"Engineering Fracture Mechanics","volume":"314 ","pages":"Article 110673"},"PeriodicalIF":4.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Energy storage characteristics and damage constitutive model of thermally treated granite: An experimental investigation

IF 4.7 2区工程技术

Engineering Fracture Mechanics Pub Date : 2025-02-07 DOI: 10.1016/j.engfracmech.2024.110679

Jiexin Ma, Tubing Yin, You Wu, Wenxuan Guo, Yongjun Chen, Zheng Yang

{"title":"Energy storage characteristics and damage constitutive model of thermally treated granite: An experimental investigation","authors":"Jiexin Ma, Tubing Yin, You Wu, Wenxuan Guo, Yongjun Chen, Zheng Yang","doi":"10.1016/j.engfracmech.2024.110679","DOIUrl":"10.1016/j.engfracmech.2024.110679","url":null,"abstract":"<div><div>With the development of deep Earth energy engineering in the 21st century, the challenges brought by high stress and high temperature will become increasingly frequent. In the development of deep geothermal resources, the constitutive relationship of high-temperature rock mechanics is a core issue faced by geothermal development projects. In this paper, investigates the static mechanical behavior and brittle ductile failure characteristics of granite under heat treatment at 25, 200, 400, 600, and 800 ℃ during uniaxial compression, based on the linear energy storage rule of high-temperature rock under uniaxial compression before peak strength, we propose an energy dissipation rule post-peak, leading to an energy evolution rule for the whole failure process of high-temperature rock. Based this, the stress–strain curve characteristics of the rock after reaching the rock peak were characterized for the first time. Then, establish the corresponding constitutive model. The calculation relationship of pre-peak strain energy as the independent variable is determined by uniaxial loading and unloading test, and the model parameters are calibrated. The calculation results can better reflect the brittleness characteristics of granite and the transition from brittleness to ductility with increasing temperature, solving the problems that all previous constitutive relationships cannot reflect the post peak curve of the rock failure. The peak strength and strain observed at various temperatures align well with our experimental findings, confirming the model’s validity presented in this article, which can provide theoretical guidance for practical geothermal engineering applications.</div></div>","PeriodicalId":11576,"journal":{"name":"Engineering Fracture Mechanics","volume":"314 ","pages":"Article 110679"},"PeriodicalIF":4.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Cone cracking and fragmentation of alumina plates under high-speed penetration: Experiments and modeling

IF 4.7 2区工程技术

Engineering Fracture Mechanics Pub Date : 2025-02-07 DOI: 10.1016/j.engfracmech.2024.110733

J.C. Yuan , J.Y. Hua , Y.L. Bian , W.J. Zhang , Z.Y. Liu , Y. Cai , J.Y. Huang , S.N. Luo

{"title":"Cone cracking and fragmentation of alumina plates under high-speed penetration: Experiments and modeling","authors":"J.C. Yuan , J.Y. Hua , Y.L. Bian , W.J. Zhang , Z.Y. Liu , Y. Cai , J.Y. Huang , S.N. Luo","doi":"10.1016/j.engfracmech.2024.110733","DOIUrl":"10.1016/j.engfracmech.2024.110733","url":null,"abstract":"<div><div>Ballistic damage and fragmentation of alumina ceramic plates are investigated with ballistic impact experiments and numerical simulations. Ballistic impact tests are conducted with steel spherical projectiles (5 mm diameter) at 274–1040 ms<sup>−1</sup> using one- and two-stage gas guns along with high-speed photography. The postmortem targets are characterized with optical imaging, three-dimensional (3D) laser scanning and scanning electron microscopy. As the impact velocity increases, ceramic targets show damage modes as radial cracks (without cones), cone cracks, cone spallation, and cone fragmentation in sequence. The diameter, volume, and surface angles of the conical bullet holes (or ceramic cones) increase, while the height of ceramic cone decreases, with the increase of impact velocity. In the impact region, the shock compression-induc ed and tension-induced damage produce granular and coarse fragments, respectively, with the fragment size distribution following a power law. Numerical ballistic simulations are performed using the smooth particle hydrodynamics and finite element methods (SPH-FEM) along with the Johnson–Cook and Johnson–Holmquist constitutive models. The SPH-FEM fixed coupling model can capture the failure mechanisms and fragmentation characteristics of ceramic targets, including the 3D morphology evolution of ceramic cones. The angle deflection of the cone cracks is attributed to the stress wave interactions from the projectile and target free surfaces, altering the stress state at the crack tip and thus crack propagation direction.</div></div>","PeriodicalId":11576,"journal":{"name":"Engineering Fracture Mechanics","volume":"314 ","pages":"Article 110733"},"PeriodicalIF":4.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Research on the influence of axial deck media on damage and stress field distribution characteristics of glauconite

IF 4.7 2区工程技术

Engineering Fracture Mechanics Pub Date : 2025-02-07 DOI: 10.1016/j.engfracmech.2024.110740

Yuanyuan You , Renshu Yang , Zhongwen Yue , Jinjing Zuo , Xinmin Ma , Chenxi Ding , Chenglong Xiao

{"title":"Research on the influence of axial deck media on damage and stress field distribution characteristics of glauconite","authors":"Yuanyuan You , Renshu Yang , Zhongwen Yue , Jinjing Zuo , Xinmin Ma , Chenxi Ding , Chenglong Xiao","doi":"10.1016/j.engfracmech.2024.110740","DOIUrl":"10.1016/j.engfracmech.2024.110740","url":null,"abstract":"<div><div>The type of axial decking medium significantly influences the efficiency of rock blasting fragmentation, the distribution of the stress field, and the energy transmitted into the rock. This study conducted experiments on glauconite samples utilizing a passive confining pressure device outfitted with four distinct axial decking media charge structures to indicate the rock-breaking mechanism associated with various axial decking media. In conjunction with box counting dimension and fractal dimension theories, computer tomography (CT) scanning and 3D model reconstruction techniques are utilized to visualize the spatial distribution and morphology of explosion-induced cracks. This approach also facilitates a quantitative analysis of the rock damage incurred by the explosions. The results indicated that liquid (water) deck medium charges result in the most substantial rock damage, followed by solid (rock powder), solid (sand), and gas (air) deck medium charges, respectively. The maximum rock damage recorded with water deck medium charges is 0.826, whereas the minimum is 0.778 for air deck medium charges. Then, LS-DYNA numerical simulation software is employed to develop rock blasting models with varying deck media charges, capturing the dynamic evolution of rock damage. The numerical outcomes confirm the laboratory ones and illustrate how different decking media impact the distribution of the explosive stress field and energy transfer efficiency. When employing a liquid (water) axial decking medium, the rock demonstrates the greatest internal energy input and the swiftest rate of energy transfer, with the internal energy input being 1.12 times and 1.68 times that of solid and gas media, respectively. These insights offer valuable theoretical support for designing and optimizing axial decking charge structures in field applications.</div></div>","PeriodicalId":11576,"journal":{"name":"Engineering Fracture Mechanics","volume":"314 ","pages":"Article 110740"},"PeriodicalIF":4.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Fracture toughness of heat-treated SA508 steels predicted by instrumented spherical indentation test

IF 4.7 2区工程技术

Engineering Fracture Mechanics Pub Date : 2025-02-07 DOI: 10.1016/j.engfracmech.2024.110766

Feng Yu , Ying Kan , Haiyan Zhang , Mingcheng Sun , Yingzhi Li

{"title":"Fracture toughness of heat-treated SA508 steels predicted by instrumented spherical indentation test","authors":"Feng Yu , Ying Kan , Haiyan Zhang , Mingcheng Sun , Yingzhi Li","doi":"10.1016/j.engfracmech.2024.110766","DOIUrl":"10.1016/j.engfracmech.2024.110766","url":null,"abstract":"<div><div>This paper presents a comprehensive analysis of the tensile properties and fracture toughness of five heat-treated SA508 steels, utilizing the instrumented spherical indentation test (ISIT). It critically examines the impact of microstructural variations induced by various heat treatment methodologies on these mechanical properties. A novel ISIT computational framework, IITv1.0, has been developed through enhancements to existing predictive algorithms, facilitating more accurate predictions of yield stress, strain hardening, tensile strength and fracture toughness. The IITv1.0 integrates an advanced critical fracture stress criterion alongside an enhanced energy release rate model, effectively differentiating between cleavage and ductile fracture modes resulting in SA508 steels from the five heat treatment processes. The study underscores the establishment of an automated selection criterion for differentiating the cleavage and ductile fracture modes of metallic materials. The predictive outcomes for tensile properties and fracture toughness by this IITv1.0 demonstrate strong concordance with experimental data obtained from the corresponding standard testing methods.</div></div>","PeriodicalId":11576,"journal":{"name":"Engineering Fracture Mechanics","volume":"314 ","pages":"Article 110766"},"PeriodicalIF":4.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Atomic scale analysis of cracking behavior at the triple junctions based on molecular dynamics simulations

IF 4.7 2区工程技术

Engineering Fracture Mechanics Pub Date : 2025-02-07 DOI: 10.1016/j.engfracmech.2024.110762

Xiang Zhang , Puhao Li , Yaping Liu , Mengfei Zhang , Fan Yang

{"title":"Atomic scale analysis of cracking behavior at the triple junctions based on molecular dynamics simulations","authors":"Xiang Zhang , Puhao Li , Yaping Liu , Mengfei Zhang , Fan Yang","doi":"10.1016/j.engfracmech.2024.110762","DOIUrl":"10.1016/j.engfracmech.2024.110762","url":null,"abstract":"<div><div>Triple junctions play important role in the deformation and fracture of polycrystalline metals. Due to the difference in the crystalline orientations of the composing grains, high stress concentration exists at the triple junctions, affecting the mechanical behavior of the materials. In order to explore the propagation behavior of an intergranular crack at the triple junctions, the evolutions of initially intergranular cracks at the triple junctions are investigated using a series of molecular dynamics simulations. The results show that the geometric parameters of triple junctions have important influences on the propagation mode of the initially intergranular crack. There exist four cracking modes, i.e., blunting, GB sliding, transgranular cracking, and intergranular cracking, among which the GB sliding mode has the best fracture resistance. Moreover, the triple junction geometry also has a strong effect on the crack propagation path and characters, resulting in distinctive ductile or brittle crack propagation characters. It is found that the crack propagation path gradually transits from intergranular cracking to transgranular cracking with the increase of grain boundary inclination angle from parallel to perpendicular with the crack. Also, the crack propagation character changes from ductile to brittle as the crystal orientation of the grain ahead of the crack gradually increases from 0 to 90 degrees. This work provides a unique insight for the understanding of fracture of nanocrystalline metals.</div></div>","PeriodicalId":11576,"journal":{"name":"Engineering Fracture Mechanics","volume":"314 ","pages":"Article 110762"},"PeriodicalIF":4.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Advanced computational models for accurate fracture toughness prediction in diverse concrete types: Insights from a robust laboratory database

IF 4.7 2区工程技术

Engineering Fracture Mechanics Pub Date : 2025-02-07 DOI: 10.1016/j.engfracmech.2024.110757

Hanan Samadi , Arsalan Mahmoodzadeh , Mokhtar Mohammadi , Abdulaziz Alghamdi , Nejib Ghazouani , Mohd Ahmed

{"title":"Advanced computational models for accurate fracture toughness prediction in diverse concrete types: Insights from a robust laboratory database","authors":"Hanan Samadi , Arsalan Mahmoodzadeh , Mokhtar Mohammadi , Abdulaziz Alghamdi , Nejib Ghazouani , Mohd Ahmed","doi":"10.1016/j.engfracmech.2024.110757","DOIUrl":"10.1016/j.engfracmech.2024.110757","url":null,"abstract":"<div><div>Fracture toughness (FT) is one of the most important material characteristics that determines the mechanical stability and operational performance of concrete structures, but its accurate measurement is rather difficult due to the complicated, expensive, and lengthy nature of the common experimental approaches. This study proposes a novel approach that combines machine learning (ML) with empirical information from three-point bending tests to estimate FT for a large set of concrete formulations. A dataset of 600 samples, which were carefully prepared and tested, containing aggregates of different sizes, water-cement ratios, curing conditions, and material additives, was used. Compared to other ML algorithms, the AD-XGBoost model achieved the best results by predicting FT with R<sup>2</sup> values of 0.99 and NRMSE of 0.0008. As per the sensitivity analyses, cement type, fiber percentage, and curing temperature were the most influential parameters on FT, while the inclusion of carbon and steel fibers into the concrete matrix enhanced its structural stability. Improvement of the toughness of concrete was also noticed with a prolonged curing process. Besides being an effective and reliable substitute for the prediction of the FT, this ML modelling strategy significantly minimizes the need for resource-demanding laboratory tests.</div></div>","PeriodicalId":11576,"journal":{"name":"Engineering Fracture Mechanics","volume":"314 ","pages":"Article 110757"},"PeriodicalIF":4.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

New insights into interface characterization of ceramic matrix composites: Theory and application of hysteresis loops with Coulomb friction

IF 4.7 2区工程技术

Engineering Fracture Mechanics Pub Date : 2025-02-07 DOI: 10.1016/j.engfracmech.2024.110758

Yong Ma , Xiaochuan Niu , Shu Guo , Lei Zhang , Jiaxuan Yan , Yuli Chen

{"title":"New insights into interface characterization of ceramic matrix composites: Theory and application of hysteresis loops with Coulomb friction","authors":"Yong Ma , Xiaochuan Niu , Shu Guo , Lei Zhang , Jiaxuan Yan , Yuli Chen","doi":"10.1016/j.engfracmech.2024.110758","DOIUrl":"10.1016/j.engfracmech.2024.110758","url":null,"abstract":"<div><div>To better predict the stress–strain relationship during unloading/reloading cycles in unidirectional fiber-reinforced ceramic matrix composites (FRCMCs), a comprehensive micromechanical hysteresis loop model is proposed, considering Coulomb friction and incorporating effects of interphase thickness, Poisson effect, residual thermal stress (RTS), and interfacial roughness. Based on the model, the hysteresis behavior is categorized into three distinct domains, i.e., small debonding energy (SDE), large debonding energy (LDE), and overlarge debonding energy (OLDE). For FRCMCs with low debonding toughness and thin interphase, the SDE scenario is more prevalent. By applying the model to interface characterization, we propose a more scientific set of parameters for interfacial performance description, including frictional coefficient, initial interfacial radial pressure, debonding toughness, and axial RTS. Furthermore, a method for obtaining the interfacial parameters based on tensile hysteresis tests is established, taking into account all the three domains. Especially, an innovative two-stage fitting approach is designed to derive interfacial properties for the SDE case, addressing the gaps in prior research. The comparison of the current model with experimental data for C<sub>f</sub>/PyC/SiC and Nicalon/CAS composites demonstrates the reliability in hysteresis testing analysis.</div></div>","PeriodicalId":11576,"journal":{"name":"Engineering Fracture Mechanics","volume":"314 ","pages":"Article 110758"},"PeriodicalIF":4.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Bonding performance and load transfer characteristics of BFRP anchors: Insights from field pull-out tests

IF 4.7 2区工程技术

Engineering Fracture Mechanics Pub Date : 2025-02-07 DOI: 10.1016/j.engfracmech.2024.110783

Hong Wei , Zhigang Tao , Zhigang Ma , Manchao He , Lin Tang , Honggang Wu

{"title":"Bonding performance and load transfer characteristics of BFRP anchors: Insights from field pull-out tests","authors":"Hong Wei , Zhigang Tao , Zhigang Ma , Manchao He , Lin Tang , Honggang Wu","doi":"10.1016/j.engfracmech.2024.110783","DOIUrl":"10.1016/j.engfracmech.2024.110783","url":null,"abstract":"<div><div>Basalt fiber-reinforced polymer (BFRP) anchors have been gradually employed in the field of geotechnical anchorage engineering. However, there remains substantial potential for further exploration of their bonding performance and load transfer characteristics through theoretical and experimental methods. In this study, five BFRP anchors with a diameter of 32 mm and varying lengths of 2.8 m, 3.3 m, 3.8 m, 4.3 m and 4.8 m, were employed to conduct field pull-out tests. Data on pull-out load, displacement, and stress was subsequently collected. The findings indicated a strong correlation between the calculated values of axial force and shear stress derived from the analytical solution of load transfer and the measured values (the correlation coefficient is greater than 0.9), thereby validating the effectiveness of the double exponential curve shear slip model. The load-bearing capacity of the anchoring system was affected by the critical anchorage length, which was computed to be 3.64 m. The form of load–displacement curve and the failure mode of the BFRP anchoring system were governed by the anchorage length. The morphology and types of cracks within the cement slurry were found to be associated with the tensile stress field. Although pre-reinforcement of weak strata can enhance the load-bearing capacity of the BFRP anchorage system, it is also imperative for manufacturers to enhance the shear performance of BFRP anchors by optimizing surface morphology design and refining manufacturing processes.</div></div>","PeriodicalId":11576,"journal":{"name":"Engineering Fracture Mechanics","volume":"314 ","pages":"Article 110783"},"PeriodicalIF":4.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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