International Journal for Numerical and Analytical Methods in Geomechanics最新文献

Numerical Investigation on the Effects of Bedding Plane Roughness and Hole Shapes on Mechanical Properties and Failure Characteristics of Limestone 层理平面粗糙度和孔形对石灰岩力学性能和破坏特性影响的数值研究

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-07-26 DOI: 10.1002/nag.70025

Jiantao Zhuang, Zhenyu Chen, Yaoyao Meng, Hongwen Jing, Tao Zhang, Xiaowei Liu, Hao Shi

{"title":"Numerical Investigation on the Effects of Bedding Plane Roughness and Hole Shapes on Mechanical Properties and Failure Characteristics of Limestone","authors":"Jiantao Zhuang, Zhenyu Chen, Yaoyao Meng, Hongwen Jing, Tao Zhang, Xiaowei Liu, Hao Shi","doi":"10.1002/nag.70025","DOIUrl":"https://doi.org/10.1002/nag.70025","url":null,"abstract":"In order to study the effects of JRC value and hole shape on the mechanical properties and failure modes of layered limestone, uniaxial compression tests of layered limestone under different conditions were simulated by ABAQUS using the method of global insertion of cohesive elements. The results show that when the bedding angle is 0°, the value of JRC does not affect the failure mode of the specimen under the three kinds of holes, and the failure mode of the specimen is always shear failure through the bedding plane. When the bedding angle is 30°, the peak stress of the layered limestone specimens under the three kinds of holes is roughly the same as the corresponding peak strain with the increase of JRC. When the bedding angle is 60°, the peak stress under the three kinds of holes increases‐decreases with the increase of JRC. Under the conditions of JRC = 0, 5, and 10, the bedding shear crack is the most numerous among the four types of cracks, while the matrix shear crack have the largest number in other angles and JRC specimens. When the bedding angle is 90°, the peak stress and peak strain of the layered limestone specimens under the three kinds of holes decrease significantly at first and then rise and fall within a certain range with the increase of JRC. The layered limestone specimens with square and horseshoe‐shaped holes were found that the displacements around the holes were the smallest in the negative‐downward direction when they were damaged.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"21 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144710786","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

Diffusion Model‐Based Controlled Reconstruction Method for 3D Fractured Rock Masses 基于扩散模型的三维裂隙岩体控制重建方法

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-07-26 DOI: 10.1002/nag.70023

Zikun Ma, Binwei Xia, Yanmin Zhou, Fengyuan Zhang, Xingguo Zhang

{"title":"Diffusion Model‐Based Controlled Reconstruction Method for 3D Fractured Rock Masses","authors":"Zikun Ma, Binwei Xia, Yanmin Zhou, Fengyuan Zhang, Xingguo Zhang","doi":"10.1002/nag.70023","DOIUrl":"https://doi.org/10.1002/nag.70023","url":null,"abstract":"Accurate, cost‐effective, and controllable reconstruction of three‐dimensional (3D) digital samples of fractured rock masses is crucial for understanding the macro‐mechanical effects of fractures. Traditional reconstruction methods are not only expensive but also limited by sample representativeness, often failing to capture the true complexity of fractures. In light of these limitations, this paper introduces an innovative method based on diffusion models, termed Text2Rock, for the reconstruction of 3D fractured rock mass digital samples with enhanced controllability. By incorporating a CLIP model and an improved U‐Net3D network architecture, our approach enables control over key fracture characterization parameters such as fractal dimension, fracture intensity, and Feret's maximum diameter, thereby enhancing both the accuracy and controllability of the reconstructed samples. Reconstructed samples demonstrate that the proposed method can generate digital rock samples that closely adhere to the specified parameters, with reliability validated through two‐point correlation coefficients and statistical analyses. Furthermore, the paper illustrates the application of these reconstructed samples in uniaxial compression numerical simulations, providing a new framework for investigating the macro‐mechanical properties of fractured rock masses.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"21 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144710788","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

Analytical Solution for Stresses and Displacements of Deep Tunnels With Rockbolts Support Subjected to P and SV Waves P波和SV波作用下深部锚杆支护隧道应力和位移的解析解

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-07-26 DOI: 10.1002/nag.70021

Gong Chen, Haitao Yu

{"title":"Analytical Solution for Stresses and Displacements of Deep Tunnels With Rockbolts Support Subjected to P and SV Waves","authors":"Gong Chen, Haitao Yu","doi":"10.1002/nag.70021","DOIUrl":"https://doi.org/10.1002/nag.70021","url":null,"abstract":"Rockbolt support is one of the most commonly used reinforcement measures for rock tunnels. It is important to explore the effect of rockbolts on seismic design of tunnel structures, and therefore, a design method is required for the evaluation of such effect, which was, however, still vacant in current studies. In this paper, a novel analytical solution for the seismic response of deep tunnels with rockbolts support subjected to P and SV waves is presented. The rockbolts support region is assumed to be cylindrical and anisotropic based on the equivalent material method, and the ground and liner are considered homogenous, isotropic, and linear elastic. The general solutions for the response of a cylindrical anisotropic layer subjected to arbitrary dynamic loading are derived using generalized power series. The convergence and the linear independence of the solutions are proved. Then, the solutions for displacements and stresses of the tunnel liner are obtained by utilizing these proposed general solutions. The validity of the proposed solution is demonstrated by comparing its results and those from FEM. Parametric analysis is presented with the solution where the influences of the rockbolts length and modulus of the equivalent layer reinforced by the rockbolts support on seismic responses of deep tunnels are investigated.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"707 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144712262","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

Model and Effects of Controlling the Pore Water Pressure Distribution Around Coal and Rock Masses on Crack Initiation 控制煤岩孔隙水压力分布对裂隙起裂的模型及影响

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-07-26 DOI: 10.1002/nag.70026

Yaping Hou, Yanwei Liu, Gang Xu

{"title":"Model and Effects of Controlling the Pore Water Pressure Distribution Around Coal and Rock Masses on Crack Initiation","authors":"Yaping Hou, Yanwei Liu, Gang Xu","doi":"10.1002/nag.70026","DOIUrl":"https://doi.org/10.1002/nag.70026","url":null,"abstract":"As mining depth increases, vertical fracturing cracks become more prevalent, complicating crack initiation and extension through controlled holes. Current mechanical models inadequately consider initiation angles, and the mechanisms governing the directional propagation of hydraulic fractures are not well understood. In this paper, a pore water pressure distribution equation for coal and rock around a control hole is established, along with a mechanical model for hydraulic fracture initiation. The water pressure field around the control borehole is coupled with the global stress field model to analyze pore pressure and effective stress distribution, highlighting how water injection pressure affects initiation pressure and angle and revealing the mechanisms of hydraulic fracture initiation influenced by pore water pressure. Results show that: (1) Crack initiation pressure negatively correlates with control pore pressure, with cracks forming in the controlled direction on one side and the maximum principal stress direction on the other. (2) Pore pressure decreases along the line connecting the holes, while effective stress increases sharply. The maximum principal stress is aligned with this line, and the gradient pore pressure inversely correlates with the distance from the control hole. (3) The pore water pressure in the control hole reduces the fracture initiation pressure. Increased water injection pressure aligns the fracture initiation angle more closely with the direction between the two holes. Comparing these results with relevant tests confirms the reliability of the theoretical model. In field applications, control hole parameters should be arranged according to the desired induced direction, guiding the implementation of controlled fracturing technology.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"5 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144710787","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

Novel Consistent Tangent Operator for Runge–Kutta‐Based Explicit Stress Integration for Elasto‐Plastic Models: Application to the Modified Cam Clay Model 基于Runge-Kutta的弹塑性模型显式应力积分的新型一致切线算子：在修正凸轮粘土模型中的应用

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-07-24 DOI: 10.1002/nag.70016

L. Monforte, M. Rouainia

{"title":"Novel Consistent Tangent Operator for Runge–Kutta‐Based Explicit Stress Integration for Elasto‐Plastic Models: Application to the Modified Cam Clay Model","authors":"L. Monforte, M. Rouainia","doi":"10.1002/nag.70016","DOIUrl":"https://doi.org/10.1002/nag.70016","url":null,"abstract":"Explicit stress integration techniques for elasto‐plastic constitutive models have demonstrated high‐order accuracy, efficiency, and robustness. However, there is a notable absence of a proposed expression for the consistent tangent operator, which is essential to guarantee the quadratic convergence of the Newton–Raphson algorithm used in solving the global problem. Therefore, when employing explicit stress integration, the typical convergence rate of the global problem is linear. In this work, we introduce a novel expression for the consistent tangent operator specifically formulated for Runge–Kutta‐based explicit stress integration techniques. The Gauss point integration algorithm involves substepping, finding the intersection of the stress path with the yield surface, and implementing a yield surface drift correction algorithm. All of these numerical procedures are linearised and integrated into the expression of the consistent tangent matrix. The assessment of the consistent tangent matrix expression is conducted through a various element tests and finite element simulations using the Modified Cam Clay model. In all the simulations, a quadratic rate of asymptotic convergence is consistently achieved with the iterative solver used in the global problem. The proposed consistent tangent operator significantly enhances the computational efficiency of explicit stress integration techniques, positioning them as a viable, high‐order alternative to implicit stress integration.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"49 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701753","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

Cover Image, Volume 49, Issue 11 封面图片，第49卷，第11期

IF 3.4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-07-16 DOI: 10.1002/nag.70014

Liming Qu, Xiong Li, Georges Kouroussis, Xiaoyan Zhao, Yu Peng, Changwei Yang, Xuanming Ding, David Connolly

引用次数: 0

True Triaxial Test and Continuous‐Discrete Coupling Simulation Study on Dynamic Mechanical Properties and Damage Evolution Mechanism of Deep Marble 深部大理岩动态力学性能及损伤演化机制真三轴试验与连续-离散耦合模拟研究

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-07-14 DOI: 10.1002/nag.70015

Zhiliang Wang, Chenchen Feng, Jianguo Wang, Zhitang Lu

{"title":"True Triaxial Test and Continuous‐Discrete Coupling Simulation Study on Dynamic Mechanical Properties and Damage Evolution Mechanism of Deep Marble","authors":"Zhiliang Wang, Chenchen Feng, Jianguo Wang, Zhitang Lu","doi":"10.1002/nag.70015","DOIUrl":"https://doi.org/10.1002/nag.70015","url":null,"abstract":"This paper investigates the mechanical properties and micro‐fracture activities of marble at depth (short for deep marble) through true triaxial dynamic tests and continuous‐discrete coupling simulations. First, the true triaxial split‐Hopkinson pressure bar (SHPB) tests were conducted to measure the dynamic mechanical properties of marble specimens. Then, a continuous‐discrete coupling model was established based on the triaxial simplified grain‐based model and the application of force–velocity transfer channel to the coupling interface. Finally, the established continuous‐discrete coupling model was calibrated against test data and used to further analyze the damage mechanical behaviors of the specimens. The results show that the peak stress, maximum strain, strain rate, damage of the specimens, and maximum electrical signals of the lateral pressure bars all increase as the impact velocity increases. The strain rate effect is noteworthy. The dynamic mechanical responses and damage characteristics of the specimens under different lateral stresses show a unique ratio of lateral stress to axial stress (RLAS) effect. With the increase of RLAS, the dynamic peak stress first increases and then decreases, while the maximum deformation capacity of the specimens changes inversely. The relatively high confining pressure can make the interior of the specimens denser, improve energy transfer efficiency, and reduce energy loss. With the increase of RLAS, the damage degree of the specimen first increases and then decreases. As the impact load increases, the dissipated energy increases and the damage degree of the specimens becomes more severe. These numerical simulation results can better explain the strain rate effect and the RLAS effect.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"24 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144629447","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

Progressive Failure Mechanism of Sensitive Clay Slopes: Insights From Stabilized Smoothed Particle Finite Element Analysis of the 2010 Saint‐Jude Landslide 敏感黏土边坡的递进破坏机制：来自2010年圣犹达滑坡稳定光滑颗粒有限元分析的启示

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-07-11 DOI: 10.1002/nag.70011

Wei‐Hai Yuan, Ren‐Yuan Xing, Ming Liu, Ding Wang, Bei‐Bing Dai, Wei Zhang

{"title":"Progressive Failure Mechanism of Sensitive Clay Slopes: Insights From Stabilized Smoothed Particle Finite Element Analysis of the 2010 Saint‐Jude Landslide","authors":"Wei‐Hai Yuan, Ren‐Yuan Xing, Ming Liu, Ding Wang, Bei‐Bing Dai, Wei Zhang","doi":"10.1002/nag.70011","DOIUrl":"https://doi.org/10.1002/nag.70011","url":null,"abstract":"Modeling landslides in sensitive clay has long been a challenging issue. In sensitive clays, the shear strength significantly decreases during plastic deformation, leading to the progressive failure of the slopes. Sensitive clays exhibit complex mechanical behavior, and even a small slope failure can often trigger massive landslides. This necessitates a numerical approach capable of handling large deformations, as well as a suitable constitutive model to accurately capture the intricate behavior of these clays. In this study, a novel viscosity‐based hourglass‐control algorithm is proposed to stabilize the node integration in smoothed particle finite element method (SPFEM), and two verification examples are given to demonstrate the efficacy of the proposed method. Then, the proposed stabilized SPFEM is employed to reconstruct the 2010 Saint‐Jude landslide in Quebec, Canada. The method successfully reproduces the progressive failure processes of the Saint‐Jude landslide and quantitatively compares the final run‐out distances and retrogression distances with the field survey data, showing a good agreement.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"6 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144611280","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

Modified Effective Stress Theory for Rate‐Dependent Frozen Soil With Phase Transitions From Pre‐Melting Thin Film to Composite 从预融薄膜到复合相变速率相关冻土的修正有效应力理论

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-07-07 DOI: 10.1002/nag.4018

Yingxiao Liu, WaiChing Sun, Ronaldo I. Borja

{"title":"Modified Effective Stress Theory for Rate‐Dependent Frozen Soil With Phase Transitions From Pre‐Melting Thin Film to Composite","authors":"Yingxiao Liu, WaiChing Sun, Ronaldo I. Borja","doi":"10.1002/nag.4018","DOIUrl":"https://doi.org/10.1002/nag.4018","url":null,"abstract":"We propose a modified mixture theory and a corresponding dual‐skeleton constitutive law that captures the multi‐temporal‐scale rate‐dependent response of frozen soil under phase transitions. We hypothesize that the transport of ice crystals surrounded by a thin water film may halt during freezing once the ice crystals grow to a size comparable to that of the pores. Since ice crystals may bear the load with the solid skeleton when stuck in the pores, the shear and tensile strength of the ice–solid skeleton increases. This transition of the role of ice crystals during the freezing and thawing from inducing cryo‐suction to being a constituent of a two‐phase composite is captured via a dual‐skeleton theory. Consequently, we modify the effective stress theory to capture the kinematics transition between the fluid‐like transporting ice crystals and solid‐like ice crystals. This transition is considered separately from the ice–water phase transition in the field theory. This setting, in return, allows us to derive a dual‐solid‐skeleton constitutive theory where the rate‐dependent constitutive response of the fully frozen soil is obtained via those of the unfrozen solid matrix and the ice crystals that exhibit creep at different time scales. THM mixed finite element simulations are conducted on laboratory samples under freeze–thaw cycles from hours to days. The numerical results show good consistency with experimental records at both scales. The numerical model provides insights into the rate‐dependent processes involved across temporal scales and allows controlled parametric studies to identify different coupling mechanisms at various stages of the freeze–thaw cycles.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"61 16 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144577927","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

Influence of Inclination of En‐Echelon Joints on Shearing Behavior of Crystalline Rock 雁列节理倾角对结晶岩剪切特性的影响

IF 4 2区工程技术

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-07-07 DOI: 10.1002/nag.70008

Jun Peng, Zixin Wang, Linfei Wang, Chuanhua Xu, Kun Pan, Bibo Dai

{"title":"Influence of Inclination of En‐Echelon Joints on Shearing Behavior of Crystalline Rock","authors":"Jun Peng, Zixin Wang, Linfei Wang, Chuanhua Xu, Kun Pan, Bibo Dai","doi":"10.1002/nag.70008","DOIUrl":"https://doi.org/10.1002/nag.70008","url":null,"abstract":"Stability of rock masses in rock slope is significantly threatened by the presence of en‐echelon joints. Most previous studies focus on artificially jointed rock mass, and lonely a limited research has been conducted on the shearing performance of crystalline rock possessing en‐echelon joints. In this study, a modified grain‐based model (GBM), which considers the shape of feldspar in real rock, is used to investigate the effect of en‐echelon joint angle on the strength behavior and the associated micro‐cracking evolution of crystalline rock under different normal stresses. The simulation results indicate that peak shear strength and the principal direction of anisotropy generally reach their maximum values at en‐echelon joint angle of −15°. Micro‐cracks typically initiate at the tips of en‐echelon joints, and the connecting pattern between these joints is notably affected by joint angle. The results reveal that, despite exhibiting a high microscopic damage ratio, the shear strength of the rock specimen with negative en‐echelon joint angle increases due to enhanced inter‐particle friction and mechanical interlocking under compression. On the other hand, positive joint angle induces disc separation and rotational failure, which reduces shear resistance. In addition, an increase in normal stress amplifies the damage ratio among all joint angles. By analyzing the disc displacement field using fracture mechanics, this study reveals how joint angle and normal stress affect the propagation of wing cracks and secondary penetration cracks between en‐echelon rock joints. The research provides valuable insights into understanding the failure mechanism of rock with en‐echelon joints.","PeriodicalId":13786,"journal":{"name":"International Journal for Numerical and Analytical Methods in Geomechanics","volume":"312 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144577917","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