发布求助
文献互助 智能选刊 最新文献

Fatigue & Fracture of Engineering Materials & Structures最新文献

筛选
英文 中文
A Sequential Multiaxial Cycle Counting Algorithm Based on the Modified Wang–Brown Method 基于改进Wang-Brown法的顺序多轴循环计数算法
IF 3.1 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-12-11 DOI: 10.1111/ffe.14537
Shiyue Zhang, Hao Wu
{"title":"A Sequential Multiaxial Cycle Counting Algorithm Based on the Modified Wang–Brown Method","authors":"Shiyue Zhang,&nbsp;Hao Wu","doi":"10.1111/ffe.14537","DOIUrl":"https://doi.org/10.1111/ffe.14537","url":null,"abstract":"<div>\u0000 \u0000 <p>Rainflow algorithm is an essential and reasonable method for multiaxial fatigue damage calculation in nonproportional (NP) load histories. The modified Wang–Brown (MWB) method is proposed by Meggiolaro and Castro, which corrects the problem of neglecting the most damaging event in the Wang–Brown method. An example in the paper explains the specific process of MWB multiaxial rainflow counting. Additionally, a modified pseudocode is presented to efficiently implement loading counting, ensuring it follows the same sequence as the original load histories. Based on the count results and fatigue damage accumulation rule, a new multiaxial life prediction method is proposed. The efficiency of the proposed method is validated by reasonable correlations with the experimental data from 316L steel tubular specimens subjected to various multiaxial fatigue loadings.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 3","pages":"1112-1122"},"PeriodicalIF":3.1,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Hybrid Neural Network–Based Approach to Predict Crack Propagation Paths 基于混合神经网络的裂纹扩展路径预测方法
IF 3.1 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-12-10 DOI: 10.1111/ffe.14514
Zekai Huang, Qida Liu, Ran Liu, Dongdong Chang, Xiaofa Yang, Hong Zuo, Yingxuan Dong
{"title":"A Hybrid Neural Network–Based Approach to Predict Crack Propagation Paths","authors":"Zekai Huang,&nbsp;Qida Liu,&nbsp;Ran Liu,&nbsp;Dongdong Chang,&nbsp;Xiaofa Yang,&nbsp;Hong Zuo,&nbsp;Yingxuan Dong","doi":"10.1111/ffe.14514","DOIUrl":"https://doi.org/10.1111/ffe.14514","url":null,"abstract":"<div>\u0000 \u0000 <p>A data-driven method based on a hybrid neural network (HNet) model is proposed to predict the crack propagation path. Using images as input enables the HNet model to predict crack propagation paths for different structures and defect types. To validate the effectiveness of this method, crack propagation paths on holed plates are investigated. The HNet model is trained to approximate the nonlinear relationship between the structural geometric parameters and the crack propagation paths. The feasibility of this method is verified by comparing the prediction results of the HNet model with the finite element calculation results. Furthermore, explainable artificial intelligence enhances the transparency of the HNet model, increasing its credibility. The challenge of data acquisition is effectively addressed by active learning, reducing the required training data volume. This method provides a fresh insight into the path prediction of crack growth problems.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 3","pages":"1098-1111"},"PeriodicalIF":3.1,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Elastoplastic Crack Initiation Behavior of Unsaturated Rock Fractures (Cavities) With Asymmetric Hole-Edge Cracks Under Gas-Ice Pressure 气冰压力下非对称孔边裂缝非饱和岩石裂隙（腔）的弹塑性起裂行为
IF 3.1 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-12-09 DOI: 10.1111/ffe.14536
Wenhua Chen, Tian Xiang
{"title":"Elastoplastic Crack Initiation Behavior of Unsaturated Rock Fractures (Cavities) With Asymmetric Hole-Edge Cracks Under Gas-Ice Pressure","authors":"Wenhua Chen,&nbsp;Tian Xiang","doi":"10.1111/ffe.14536","DOIUrl":"https://doi.org/10.1111/ffe.14536","url":null,"abstract":"<div>\u0000 \u0000 <p>Current research on frost heave-induced cracking in fractures of rock masses in cold regions typically assumes that fractures are fully saturated. However, in actual engineering practice, rock mass fractures are often in an unsaturated state. Upon freezing, the fracture surfaces are subjected to a complex combination of gas pressure, freezing pressure, and ice friction forces. This study investigates the crack initiation mechanisms of unsaturated rock fractures with asymmetric edge cracks under gas-ice pressure conditions. Assuming a small yield range, we derive the calculation formulas for gas pressure after freezing, stress intensity factor, crack initiation angle, and crack initiation stress based on the complex variable function and elastic-plastic crack mechanics theory. Additionally, an improved phase-field model is proposed for calculating dynamic crack propagation in mixed-mode I-II fractures, with key parameters analyzed and discussed. The results demonstrate that: By comparing the analytical solutions with numerical calculations, the validity of the proposed model is verified. During the freezing process, dynamic crack propagation in unsaturated fractures will exhibit bifurcation. At higher water saturation levels, crack propagation shows a pattern of initial bifurcation followed by subsequent merging.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 3","pages":"1066-1082"},"PeriodicalIF":3.1,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparing Different Procedures for Calculating Flexural Cracking Toughness Using Edge-Notched Disc Bend Specimen Under Modes I and III 比较在I和III模式下用边缘缺口圆盘弯曲试样计算弯曲开裂韧性的不同方法
IF 3.1 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-12-09 DOI: 10.1111/ffe.14530
Seyed Omid Hoseini, Mohammad Reza Sohrabi, Seyed Roohollah Mousavi, Mohammad Ghasemi, M. R. M. Aliha
{"title":"Comparing Different Procedures for Calculating Flexural Cracking Toughness Using Edge-Notched Disc Bend Specimen Under Modes I and III","authors":"Seyed Omid Hoseini,&nbsp;Mohammad Reza Sohrabi,&nbsp;Seyed Roohollah Mousavi,&nbsp;Mohammad Ghasemi,&nbsp;M. R. M. Aliha","doi":"10.1111/ffe.14530","DOIUrl":"https://doi.org/10.1111/ffe.14530","url":null,"abstract":"<div>\u0000 \u0000 <p>This research used 30%, 40%, 50%, and 60% coarse aggregates and 0.15%, 0.3%, and 0.45% wavy steel fibers to make end-notched disc bend self-compacting concrete specimens for calculating and comparing flexural cracking toughness index by ASTM C1609, JSCE SF-4, and JG/T 472-2015 methods under pure modes I and III. The variation trends of different procedures under pure mode I was more affected by coarse aggregates and fibers had no noticeable influence. But under pure mode III increasing both fibers and aggregates improved the flexural cracking toughness. The estimation of JG/T 472-2015 method was better than other methods under pure mode I. In pure mode III, due to positive effect of fibers on the pre-peak, peak, and post-peak areas, the deflection exceeds 1 mm. Hence, calculating the area under the load–displacement curve is facilitated for the ASTM C1609 and JSCE SF-4 methods up to <i>L</i>/150 deflections.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 3","pages":"1083-1097"},"PeriodicalIF":3.1,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Review on the Fatigue Strength of Additively Manufactured Metal Materials Under the Very High Cycle Fatigue 增材制造金属材料在甚高周疲劳下的疲劳强度研究进展
IF 3.1 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-12-07 DOI: 10.1111/ffe.14532
J. Henrique Lopes, Pedro R. da Costa, Manuel Freitas, Luís Reis
{"title":"Review on the Fatigue Strength of Additively Manufactured Metal Materials Under the Very High Cycle Fatigue","authors":"J. Henrique Lopes,&nbsp;Pedro R. da Costa,&nbsp;Manuel Freitas,&nbsp;Luís Reis","doi":"10.1111/ffe.14532","DOIUrl":"https://doi.org/10.1111/ffe.14532","url":null,"abstract":"<div>\u0000 \u0000 <p>The primary goal of this systematic literature review is to identify, characterize, and make a comprehensive analysis of the available research on the fatigue strength of additively manufactured (AMed) metal materials when subjected to loading cycles that exceed the preconceptualized fatigue limit (\u0000<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mn>10</mn>\u0000 <mn>7</mn>\u0000 </msup>\u0000 </mrow>\u0000 <annotation>$$ {10}&amp;#x0005E;7 $$</annotation>\u0000 </semantics></math> cycles) and the very high cycle fatigue (VHCF) regime. Considering the inherent complexity and magnitude of influential variables present in AM metal processes, this paper explores in-depth the relevant conclusions taken by theoretical/experimental studies and their respective results of several AMed materials in the VHCF regime. The present review focuses on key research topics of metal AM fatigue strength, such as crack initiation and failure mechanisms, examining the influence of microstructure and defects, the effect of the input process parameters, postprocessing methods, and the influence of testing conditions on fatigue strength.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 3","pages":"979-1000"},"PeriodicalIF":3.1,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-Depth Residual Stress Evolution of Surface-Rolled Titanium Alloy Subjected to Fretting Fatigue 微动疲劳下钛合金表面轧制深度残余应力演化
IF 3.1 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-12-05 DOI: 10.1111/ffe.14527
Ni Ao, Feng Pan, Daoxin Liu, Shengchuan Wu
{"title":"In-Depth Residual Stress Evolution of Surface-Rolled Titanium Alloy Subjected to Fretting Fatigue","authors":"Ni Ao,&nbsp;Feng Pan,&nbsp;Daoxin Liu,&nbsp;Shengchuan Wu","doi":"10.1111/ffe.14527","DOIUrl":"https://doi.org/10.1111/ffe.14527","url":null,"abstract":"","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 3","pages":"1364-1368"},"PeriodicalIF":3.1,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Crack Propagation Behavior of Single-Crystal Titanium Under Cyclic Loading: A Molecular Dynamics Study 循环载荷下单晶钛裂纹扩展行为的分子动力学研究
IF 3.1 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-12-05 DOI: 10.1111/ffe.14534
Le Chang, Dalin Zheng, Hongpeng Xie, Xinran Liu, Jinling Zhao, Changyu Zhou
{"title":"Crack Propagation Behavior of Single-Crystal Titanium Under Cyclic Loading: A Molecular Dynamics Study","authors":"Le Chang,&nbsp;Dalin Zheng,&nbsp;Hongpeng Xie,&nbsp;Xinran Liu,&nbsp;Jinling Zhao,&nbsp;Changyu Zhou","doi":"10.1111/ffe.14534","DOIUrl":"https://doi.org/10.1111/ffe.14534","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, molecular dynamics (MD) simulations were employed to investigate the crack propagation behavior of single-crystal titanium with various crystal orientations under cyclic loading. The analysis demonstrates that each crack model displays temporary cyclic hardening and predominant cyclic softening characteristics. The orientation of crack propagation primarily impacts the characteristics of the softening stage, with less influence on the initial hardening stage. A notable orientation correlation is evident in the mechanism of crack propagation, characterized by the presence of various slip modes and deformation twinning (DT) systems. The crack tip deformation behavior obtained from the simulation aligns with the theoretical predictions of linear elastic fracture mechanics (LEFM). The crack growth rate (CGR) and Δ<i>J</i> for different crack models show good correlation, and both the crack propagation direction and crack plane orientation affect the characteristics of the Δ<i>J</i>–<i>da</i>/<i>dN</i> curves.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 3","pages":"1050-1065"},"PeriodicalIF":3.1,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improving Fatigue Life Prediction of Natural Rubber Using a Physics-Informed Neural Network Model 利用物理信息神经网络模型改进天然橡胶疲劳寿命预测
IF 3.1 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-12-03 DOI: 10.1111/ffe.14533
Yingshuai Sun, Xiangnan Liu, Qing Yang, Xuelai Liu, Kuanfang He
{"title":"Improving Fatigue Life Prediction of Natural Rubber Using a Physics-Informed Neural Network Model","authors":"Yingshuai Sun,&nbsp;Xiangnan Liu,&nbsp;Qing Yang,&nbsp;Xuelai Liu,&nbsp;Kuanfang He","doi":"10.1111/ffe.14533","DOIUrl":"https://doi.org/10.1111/ffe.14533","url":null,"abstract":"<div>\u0000 \u0000 <p>Traditional physical models and purely data-driven approaches often struggle with small sample sizes and the complex effects of strain ratios. To overcome these challenges, this study integrates physical principles with machine learning techniques to improve fatigue life predictions for natural rubber (NR). A uniaxial fatigue test on NR was performed, generating data to construct a physical model. A physics-informed neural network (PINN) model was subsequently developed, utilizing the fatigue life predicted by the physical model, along with engineering strain amplitude and strain ratio as input variables, whereas the experimentally observed fatigue life served as the output variable. The accuracy of the physical model, a data-driven model, and the proposed PINN model was evaluated by comparing their predictions against measured fatigue life data. The findings demonstrate that the PINN model significantly enhances prediction accuracy, with its fatigue life estimates consistently falling within 1.5 times the measured values.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 3","pages":"1039-1049"},"PeriodicalIF":3.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143111285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fatigue Characteristics and Mechanisms of Additional Damping Structures With Entangled Metallic Wire Material 金属丝缠绕附加阻尼结构的疲劳特性及机理
IF 3.1 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-12-02 DOI: 10.1111/ffe.14519
Yu Tang, Jiasong Liang, Dang Wei, Baoquan Xiong, Zhihui Zhu, Yiwan Wu, Hongbai Bai
{"title":"Fatigue Characteristics and Mechanisms of Additional Damping Structures With Entangled Metallic Wire Material","authors":"Yu Tang,&nbsp;Jiasong Liang,&nbsp;Dang Wei,&nbsp;Baoquan Xiong,&nbsp;Zhihui Zhu,&nbsp;Yiwan Wu,&nbsp;Hongbai Bai","doi":"10.1111/ffe.14519","DOIUrl":"https://doi.org/10.1111/ffe.14519","url":null,"abstract":"<div>\u0000 \u0000 <p>Under vibration conditions, continuous alternating loads cause fatigue damage to structures, affecting their stability, durability, and overall safety. In this paper, the additional damping structures with entangled metallic wire material (EMWM) is proposed. Dynamic tests with different loading frequencies and loading amplitudes are carried out to evaluate the energy dissipation and stiffness characteristics of the different structures in terms of energy dissipation, loss factor, and average stiffness. Fatigue tests are conducted, and the fatigue life tests are applied with different loading amplitudes and loading frequencies using displacement control, and the fatigue properties are obtained under different numbers of cyclic loading. The test results are analyzed with respect to the energy dissipation mechanism of EMWM and the characteristics of the additional damping structure. The hysteresis curves under different loading times are identified by parameters, and the fatigue mechanical models are constructed. Comparison between the predicted data of the model and the hysteresis curve data of the test indicates that the model has high accuracy.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 3","pages":"1022-1038"},"PeriodicalIF":3.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Influence of a Sudden Impact Loading on the Creep, Damage, and Fracture of Beams Made From Functionally Graded Materials 突然冲击载荷对功能梯度材料梁的蠕变、损伤和断裂的影响
IF 3.1 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-12-01 DOI: 10.1111/ffe.14528
Dmytro Breslavsky, Pavlo Palamarchuk, Oksana Tatarinova, Holm Altenbach, Francesco Pellicano
{"title":"The Influence of a Sudden Impact Loading on the Creep, Damage, and Fracture of Beams Made From Functionally Graded Materials","authors":"Dmytro Breslavsky,&nbsp;Pavlo Palamarchuk,&nbsp;Oksana Tatarinova,&nbsp;Holm Altenbach,&nbsp;Francesco Pellicano","doi":"10.1111/ffe.14528","DOIUrl":"https://doi.org/10.1111/ffe.14528","url":null,"abstract":"<div>\u0000 \u0000 <p>An approach to the analysis of the influence of impact loading on creep, accumulation of hidden damage and fracture of structural elements made of functionally graded materials (FGM) is proposed. The approach is based on the analysis of additional damage caused by the impact loading and the stress redistribution caused by it. For the numerical modeling, finite element analysis was applied using algorithms for determining the size and direction of motion of macroscopic defects by means of the analysis of the time-varying damage field. The fracture after an impact on a beam made from FGM is considered. The nature of fracture of a beam made of two-layer metal-ceramic material was studied. The advantages of using FGM to ensure a better long-term response of a structural element to a non-destructive impact loading are shown. An approach to determine the time until the complete fracture of the FGM beam by the simultaneous description of the motion of two cracks is proposed.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"931-941"},"PeriodicalIF":3.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信