Mechanics Research Communications最新文献_第3页

On nonlinear electromechanics of piezoelectric nanobeams 压电纳米梁的非线性电力学研究

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2026-03-01 Epub Date: 2026-01-05 DOI: 10.1016/j.mechrescom.2026.104611

Marzia Sara Vaccaro , Raffaele Barretta , Andrea Caporale , Raimondo Luciano

引用次数: 0

Probabilistic strength estimation analysis of composites considering cross-correlated random fields of local strength and apparent elastic properties 考虑局部强度和表观弹性特性互相关随机场的复合材料概率强度估计分析

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2026-03-01 Epub Date: 2026-01-13 DOI: 10.1016/j.mechrescom.2026.104628

Sei-ichiro SAKATA , George STEFANOU , Kazuto SHIRAHAMA , Seiji ONO

{"title":"Probabilistic strength estimation analysis of composites considering cross-correlated random fields of local strength and apparent elastic properties","authors":"Sei-ichiro SAKATA , George STEFANOU , Kazuto SHIRAHAMA , Seiji ONO","doi":"10.1016/j.mechrescom.2026.104628","DOIUrl":"10.1016/j.mechrescom.2026.104628","url":null,"abstract":"<div><div>This paper is focused on the strength analysis of composite materials and structures considering the heterogeneity of their microstructure. The apparent stiffness and strength properties of composites are significantly affected by the microscopic heterogeneity and randomness, and this influence on the apparent properties of composite structures should be evaluated. In particular, the geometrical randomness in microstructure has a significant influence on the microscopic stress and fracture state, and thus should be appropriately taken into account in the strength estimation of composite structures.</div><div>In this work, a multiscale numerical analysis considering microscopic heterogeneity, randomness, and their spatial distribution is discussed. The moving window method-based approach is employed for random field modeling, and finite element-based microscopic fracture analysis is performed for the local apparent strength estimation of composites considering the random microstructure morphologies. The identified probabilistic properties are introduced into the multiscale probabilistic strength analysis of composite structures, and in addition, the influence of correlation between the local apparent elastic property and strength on the estimated apparent strength of composite structures is investigated.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"152 ","pages":"Article 104628"},"PeriodicalIF":2.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Multiscale analysis of periodic micropolar elastic media 周期微极弹性介质的多尺度分析

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2026-03-01 Epub Date: 2026-01-13 DOI: 10.1016/j.mechrescom.2026.104627

R. Rodríguez-Ramos , Y. Espinosa-Almeyda , J.A. Otero , H. Camacho-Montes , P. Rodríguez-Bermúdez , B.J. Mederos

{"title":"Multiscale analysis of periodic micropolar elastic media","authors":"R. Rodríguez-Ramos , Y. Espinosa-Almeyda , J.A. Otero , H. Camacho-Montes , P. Rodríguez-Bermúdez , B.J. Mederos","doi":"10.1016/j.mechrescom.2026.104627","DOIUrl":"10.1016/j.mechrescom.2026.104627","url":null,"abstract":"<div><div>In this work, laminated and fiber-reinforced elastic micropolar multiphase composites are analyzed. The aim is to evaluate the effective stiffness and torque properties, assuming isotropic centrosymmetric constituents and ideal interfacial bonding. From the asymptotic homogenization method (AHM), the corresponding formulations of the local cell problems and the effective properties are derived. The local problems are solved using the methodology reported for laminated and fibrous media in previous works. Herein, for the first time, a direct and systematic quantitative comparison between the effective properties of laminated and fibrous micropolar media is presented. In addition, an extensive parametric analysis is carried out for some real material systems (SyF, PUF, PMIF-WF51, PMIF-WF110), generating results useful for engineering applications, design, and model validation. Moreover, an integration of both microstructural architectures within a micropolar framework is shown, enabling a consistent comparison of how geometry influences the effective responses. Numerical results illustrate the findings for different two-phase composites. They reveal the influence of microstructural geometry on the effective behaviors, highlighting significant differences between laminated and fibrous composites. These findings could be useful for applications and offer a solid reference framework for validating both numerical and experimental studies.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"152 ","pages":"Article 104627"},"PeriodicalIF":2.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Refined zigzag numerical solution based on IGA for thermal bending analysis of laminated bio-inspired helicoldal composite plates 基于IGA的仿生螺旋复合材料层合板热弯曲精细之字形数值解

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2026-03-01 Epub Date: 2026-01-07 DOI: 10.1016/j.mechrescom.2026.104622

Thanh Cuong-Le , Minh Hoang-Le , Samir Khatir , Nguyen Duy Khuong , Van Hai Luong

{"title":"Refined zigzag numerical solution based on IGA for thermal bending analysis of laminated bio-inspired helicoldal composite plates","authors":"Thanh Cuong-Le , Minh Hoang-Le , Samir Khatir , Nguyen Duy Khuong , Van Hai Luong","doi":"10.1016/j.mechrescom.2026.104622","DOIUrl":"10.1016/j.mechrescom.2026.104622","url":null,"abstract":"<div><div>This study presents a numerical solution for the thermal bending analysis of laminated bio-inspired helicoidal composite plates using isogeometric analysis integrated with refined zigzag plate theory (IGA-RZT). The sinusoidal thermal variation across the plate thickness is considered as an external load. By employing refined zigzag theory to simulate the displacement field of laminated plate, the present IGA-RZT solution effectively captures the layerwise mechanical behavior by accounting for the discontinuities in the first derivatives of in-plane displacements across interfaces layer along the thickness direction, in accordance with specified <span><math><msubsup><mi>C</mi><mi>z</mi><mn>0</mn></msubsup></math></span>-requirement. Four distinct helicoidal architectures including helicoidal recursive (HR), helicoidal exponential (HE), helicoidal semicircular (HS), and helicoidal linear (HL) are examined to assess their structural behavior under thermal loading. The influence of sequential parameter, number layers, geometry aspect ratio, thermal expansion ratio and length-to-thickness ratio on thermal bending responses is thoroughly analyzed. Numerical results confirm the accuracy and reliability of the IGA-RZT method and reveal the mechanical response of bio-inspired spiral designs under thermal environments. The new findings of this study provide a meaningful insights that can guide future research on the laminated bio-inspired structures.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"152 ","pages":"Article 104622"},"PeriodicalIF":2.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Dynamic response of 3D orthogonal U-shaped accordion honeycomb structures with zero Poisson’s ratio 零泊松比下三维正交u形手风琴蜂窝结构的动力响应

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2026-03-01 Epub Date: 2026-01-19 DOI: 10.1016/j.mechrescom.2026.104632

Feng Guo , Tao Fu , Chengfei Li , Jianfeng Jiang , Jinxiang Fang , Sen Wang , Chao Yang

{"title":"Dynamic response of 3D orthogonal U-shaped accordion honeycomb structures with zero Poisson’s ratio","authors":"Feng Guo , Tao Fu , Chengfei Li , Jianfeng Jiang , Jinxiang Fang , Sen Wang , Chao Yang","doi":"10.1016/j.mechrescom.2026.104632","DOIUrl":"10.1016/j.mechrescom.2026.104632","url":null,"abstract":"<div><div>Three-dimensional (3D) zero Poisson’s ratio (ZPR) metamaterials remain hold significant research potential, despite extensive research on two-dimensional (2D) ZPR and negative Poisson’s ratio (NPR) metamaterials in recent years. These materials exhibit extraordinarily mechanical properties that provide substantial advantages and broader application prospects over traditional materials. Therefore, in this paper, an orthogonal 3D orthogonal U-shaped accordion (3D-OUA) metamaterial was proposed on the basis of the 2D classical re-entrant hexagon core (RHC) metamaterial. It was applied to the modeling of honeycomb structures, sandwich panels and energy absorbing boxes, and the dynamic response under mechanical compression and dynamic impact was investigated. Finite element models (FEMs) were developed using ABAQUS. Specimens were fabricated using a metal 3D printer. Quasi-static compression experiments and low-velocity impact experiments were conducted, and the dynamic Poisson’s ratio of the honeycomb structure was filmed by a high-speed camera and image processing techniques. Decreasing the amplitude of the cosine function of the unit cell, increasing the tensile thickness of the unit cell and employing multidirectional unit cells to construct the 3D-OUA honeycomb structure can enhance the energy absorption and plateau stress. Reducing the cosine function amplitude of the unit cell, increasing the tensile thickness of the unit cell and employing multidirectional unit cells can enhance the impact resistance of 3D-OUA sandwich panels. In addition, 3D-OUA has obvious advantages over the classical energy absorbing box filling structure and 3D-RHC structure is expected to be applied to the design of new energy absorbing boxes.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"152 ","pages":"Article 104632"},"PeriodicalIF":2.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

On the synthesis of the measurements and structural models using statistical finite element method 统计有限元法测量与结构模型的综合研究

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2026-03-01 Epub Date: 2026-02-03 DOI: 10.1016/j.mechrescom.2026.104638

Ahmet Oguzhan Yuksel

{"title":"On the synthesis of the measurements and structural models using statistical finite element method","authors":"Ahmet Oguzhan Yuksel","doi":"10.1016/j.mechrescom.2026.104638","DOIUrl":"10.1016/j.mechrescom.2026.104638","url":null,"abstract":"<div><div>In this paper, we present a statistical finite element method (statFEM) for the synthesis of measurement data and computational models of architected metamaterials under material and model uncertainty. The proposed framework combines a probabilistic forward model with Bayesian inference to update displacement fields using sparse, noisy observations. Synthetic measurements are generated using a high-fidelity Timoshenko beam model, while inference is performed with a reduced Euler–Bernoulli model, thereby introducing controlled model discrepancy. Material uncertainty is modelled as a Gaussian random field defined over the connectivity graph of the lattice, with a covariance structure derived from a discretised stochastic partial differential equation (SPDE). This formulation yields sparse precision matrices that enable efficient Bayesian updating for large-scale lattice systems. Numerical studies on body-centred cubic (BCC) and octet lattice structures demonstrate that the proposed approach can recover accurate solution fields from limited measurements, reduce predictive uncertainty, and identify regions most affected by model mismatch and connectivity defects. Our results show that the SPDE-based statFEM framework provides a computationally tractable and statistically rigorous approach for fusing data and models of metamaterials. It offers a promising extension to uncertainty-aware digital twins of architected materials and structures.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"152 ","pages":"Article 104638"},"PeriodicalIF":2.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Generalized function based solution to free vibration of Euler–Bernoulli beam with arbitrary number of concentrated masses 基于广义函数的任意集中质量欧拉-伯努利梁自由振动解

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2026-03-01 Epub Date: 2026-01-16 DOI: 10.1016/j.mechrescom.2026.104629

Like Pan , Yin Zhang , Tong Xing , Yuan Yuan , Han Wu

{"title":"Generalized function based solution to free vibration of Euler–Bernoulli beam with arbitrary number of concentrated masses","authors":"Like Pan , Yin Zhang , Tong Xing , Yuan Yuan , Han Wu","doi":"10.1016/j.mechrescom.2026.104629","DOIUrl":"10.1016/j.mechrescom.2026.104629","url":null,"abstract":"<div><div>In the differential governing equation of the free vibration of an Euler-Bernoulli beam, the presence of multiple concentrated masses is modeled with the Dirac delta function. A new solution to the beam free vibration, which is based on the generalized functions and their distributional derivative rule, is provided. In the new solution, the shear force discontinuities due to the inertial forces cause by the concentrated masses are incorporated. As the result, the eigenvalue problem formulation with this new solution only needs to enforce the beam boundary conditions. In comparison with the determinant of a <span><math><mrow><mn>4</mn><mrow><mo>(</mo><mi>N</mi><mo>+</mo><mn>1</mn><mo>)</mo></mrow><mo>×</mo><mn>4</mn><mrow><mo>(</mo><mi>N</mi><mo>+</mo><mn>1</mn><mo>)</mo></mrow></mrow></math></span> matrix (<span><math><mi>N</mi></math></span>: the number of concentrated masses) formulated by the analytical method, the eigenvalue problem formulated by the new solution form is the determinant of a <span><math><mrow><mn>4</mn><mo>×</mo><mn>4</mn></mrow></math></span> matrix irrespective of the number of concentrated masses, which significantly reduces the computation. In comparison with the Laplace transform and the Galerkin method, the procedure of formulating an eigenvalue problem is significantly simplified with this new solution. Furthermore, compared with the piece-wise solution form of the analytical method, the one-piece form of this new solution is convenient for enforcing the beam boundary conditions and finding the eigenvectors: The new solution form is with a recursive relation, from which the concise and analytical forms of the characteristic equations are derived and the eigenvectors are readily obtained.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"152 ","pages":"Article 104629"},"PeriodicalIF":2.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the nodal contact forces in tensegrity structures 张拉整体结构节点接触力研究

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2026-03-01 Epub Date: 2026-01-14 DOI: 10.1016/j.mechrescom.2026.104626

Ani Luo , Yaming Feng , Heping Liu , Ziying Cao , Guangzhen Xing , Jinxin Lu

{"title":"Study on the nodal contact forces in tensegrity structures","authors":"Ani Luo , Yaming Feng , Heping Liu , Ziying Cao , Guangzhen Xing , Jinxin Lu","doi":"10.1016/j.mechrescom.2026.104626","DOIUrl":"10.1016/j.mechrescom.2026.104626","url":null,"abstract":"<div><div>This study presents a methodology for analyzing ground contact forces in tensegrity structures under unilateral constraints. A force-law-based contact formulation is first introduced for tensegrity systems. The results indicate that the large penetration depths permitted by this formulation lead to pronounced oscillations in both contact velocity and contact force at the interacting nodes. To overcome this limitation, the normal and tangential contact conditions are reformulated as standard linear complementarity problems. Normal contact is described using a Newtonian impact law to account for kinetic energy dissipation, while tangential contact is governed by Coulomb friction to model the stick–slip transition. For three-dimensional cases, the friction cone is approximated using a polyhedral representation. The resulting dynamic system is solved using a hybrid time-stepping scheme that combines the Moreau midpoint method with a fourth-order Runge–Kutta integrator. Finally, two numerical examples are presented to demonstrate the advantages of the proposed method in terms of accuracy and stability.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"152 ","pages":"Article 104626"},"PeriodicalIF":2.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Application of Maxwell models for bone remodeling under orthodontic loading Maxwell模型在正畸载荷下骨重建中的应用

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2026-03-01 Epub Date: 2026-01-19 DOI: 10.1016/j.mechrescom.2026.104630

Luca Placidi , Francesco Fabbrocino , Daniel George , Yeaseul Lee , Michele Tepedino

{"title":"Application of Maxwell models for bone remodeling under orthodontic loading","authors":"Luca Placidi , Francesco Fabbrocino , Daniel George , Yeaseul Lee , Michele Tepedino","doi":"10.1016/j.mechrescom.2026.104630","DOIUrl":"10.1016/j.mechrescom.2026.104630","url":null,"abstract":"<div><div>Orthodontic treatments apply controlled displacement or mechanical forces (quasi-static but persistent) to teeth via dental braces. These forces are transmitted through the periodontal ligament (PDL) to the surrounding alveolar bone, initiating a bone remodeling process that allows the teeth to gradually shift position. The PDL transmits load to the alveolar bone and initial stress peaks relax with time as bone resorbs in regions of compression and deposits in regions of tension. Bone tissue, although mostly elastic on short time scales, exhibit therefore adaptive behaviors over longer durations due to cellular remodeling. In this paper we use viscoelastic Maxwell models to capture such an adaptive behavior. Two models are considered. The first is a two-degrees-of-freedom (2DOF) model. The second investigates the continuum two-dimensional case. We derive them, first time in this context, with the use of a Hamilton–Rayleigh principle. For both cases, we show that the load free configuration changes according to the experienced load and the models quantify these concept. The models are general and can be applied to any load history. Besides, the second 2D model can also be applied to any geometric configuration. The examples are nevertheless sufficiently simple to be solved analytically. The target is to help to predict optimal loading schedules to avoid excessive stress or damage.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"152 ","pages":"Article 104630"},"PeriodicalIF":2.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A multiscale method bio-inspired by bone architecture to enhance stiffness to weight ratio of mechanical parts 一种以骨结构为灵感的多尺度方法，以提高机械部件的刚度与重量比

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2026-03-01 Epub Date: 2026-01-05 DOI: 10.1016/j.mechrescom.2026.104614

Asma JELLAD , Valentin PERONI , Nicolas CADORET , Mathieu BILHERE-DIEUZEIDE , Julien CHAVES-JACOB

{"title":"A multiscale method bio-inspired by bone architecture to enhance stiffness to weight ratio of mechanical parts","authors":"Asma JELLAD , Valentin PERONI , Nicolas CADORET , Mathieu BILHERE-DIEUZEIDE , Julien CHAVES-JACOB","doi":"10.1016/j.mechrescom.2026.104614","DOIUrl":"10.1016/j.mechrescom.2026.104614","url":null,"abstract":"<div><div>A current challenge in mechanical engineering is reducing the mass of mechanisms while maintaining performance, in order to decrease energy and resource consumption. This challenge also exists in Nature, and the architecture of long bones provides an excellent example of how Evolution has solved this problem. Bone architecture is complex, highly adapted to mechanical stresses, and yet extremely resource efficient. The use of such complex structures is now feasible in industry thanks to the advent of additive manufacturing. In this paper, a bone bio-inspired, multiscale mass reduction method for mechanical parts is presented, aiming to enhance the stiffness to weight ratio. A two-scale approach is developed: the macroscale (bone shape, topological level) and the mesoscale (trabecular bone structure, structural level). This multiscale method is then compared with each method applied separately. For this comparison, the three-point bending test (representative of industrial demands) is used. Tests were performed both experimentally and through finite element analysis. The experiments show the efficiency of the multiscale method, with improvements of 24% compared to the topological level method and 7% compared to the structural level method. The finite element analysis results support and explain this trend, indicating that the multiscale structure achieves a better distribution of internal stresses. Thus, this study demonstrates that combining two mass reduction methods operating at different scales yields better results than either method alone. The results obtained for this multiscale method are highly encouraging and suggest potential applications for industrial parts in the automotive and aerospace sectors.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"152 ","pages":"Article 104614"},"PeriodicalIF":2.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145915225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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