Acta Mechanica Solida Sinica最新文献

Preface to the Special Issue on “Experimental Mechanics at the Micro/Nanoscale”

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-03-19 DOI: 10.1007/s10338-025-00592-x

Xide Li, Wei Qiu, Dabiao Liu, Mengxiong Liu

引用次数: 0

Atomic-Scale Strain Field Mapping Methods for HR-TEM and HR-STEM Images

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-03-17 DOI: 10.1007/s10338-024-00564-7

Jie Wang, You Li, Chenglin Pua, Dihan Yao, Wanying He, Xiaoyu Yang, Xiaoge Wang, Mengxiong Liu, Xide Li

{"title":"Atomic-Scale Strain Field Mapping Methods for HR-TEM and HR-STEM Images","authors":"Jie Wang, You Li, Chenglin Pua, Dihan Yao, Wanying He, Xiaoyu Yang, Xiaoge Wang, Mengxiong Liu, Xide Li","doi":"10.1007/s10338-024-00564-7","DOIUrl":"10.1007/s10338-024-00564-7","url":null,"abstract":"<div><p>Atomic-scale strain mapping has become increasingly vital for investigating deformation mechanisms and the governing principles of solid materials. This is due to the significant impact of atomic-scale strain on the physical, chemical, and mechanical properties of nanomaterials that comprise functional devices such as nanoelectronics, communication devices, electromechanical systems, and sensors. The advent of advanced electron microscopes has enabled the acquisition of high-magnification images with atomic resolution, providing an exceptional platform for measuring the atomic-scale strain of solid materials. However, accurate and unified strain mapping methods and standards for evaluating atomic-scale strain distribution remain scarce. Consequently, a unified strain mapping framework is proposed for atomic-scale strain measurement. Utilizing finite deformation analysis and the least-squares mathematical method, two types of atomic-scale strain field mapping methods have been developed, including the phase analysis-based methods (PAD and PAS) and the peak matching-based strain mapping method (PMS) for high-resolution scanning transmission electron microscope images. The prototypical 2D materials, graphene and molybdenum disulfide, serve as the subjects for the strain field mapping research, conducted through both simulation and experimentation. Upon comparing the theoretical strain mapping results of single-layer graphene and molybdenum disulfide with and without defects, it is demonstrated that the proposed strain mapping methods, particularly the PMS method, can accurately describe the large deformation surrounding a significant strain gradient.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 2","pages":"275 - 289"},"PeriodicalIF":2.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measuring Mechanical Parameters of 2D Materials Based on the Bulge Test

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-03-03 DOI: 10.1007/s10338-024-00559-4

Xuwei Cui, Wenlong Dong, Yuan Hou, Guorui Wang, Luqi Liu, Zhong Zhang

引用次数: 0

Experimental Study on Strain Transfer Behavior of Graphene and Black Phosphorus Heterostructure on Flexible Substrate

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-02-07 DOI: 10.1007/s10338-025-00590-z

Rubing Li, Miaojing Wang, Huadan Xing, Mingyuan Sun, Haimei Xie, Wei Qiu

{"title":"Experimental Study on Strain Transfer Behavior of Graphene and Black Phosphorus Heterostructure on Flexible Substrate","authors":"Rubing Li, Miaojing Wang, Huadan Xing, Mingyuan Sun, Haimei Xie, Wei Qiu","doi":"10.1007/s10338-025-00590-z","DOIUrl":"10.1007/s10338-025-00590-z","url":null,"abstract":"<div><p>The strain transfer behavior of graphene and black phosphorus heterostructure on flexible substrates plays a crucial role in the functionality and regulation of the device. Specifically, it is imperative to investigate the anisotropy associated with strain transfer at the black phosphorus interface. In this study, a sample transfer method was proposed to prevent the contact of black phosphorus with water, achieving monolayer graphene and few-layer black phosphorus heterostructures on a PET film substrate. Micro-Raman spectroscopy was used to measure the strain of graphene and black phosphorus when the PET film substrate was under uniaxial tensile loading along the zigzag and armchair directions of black phosphorus, respectively. The Raman shift-strain relationship of black phosphorus was derived, and an interface transfer model was developed for the heterostructure. Based on the model, the strain transfer efficiency of each measuring spot was calculated and the strain transfer mechanism of each layer was analyzed. The results uncover the influence of the anisotropic interlayer properties inside the black phosphorus on the strain transfer behavior in the heterostructure on the flexible substrate.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 2","pages":"309 - 319"},"PeriodicalIF":2.0,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical and Experimental Analysis of Nonlinear Large Tensile Deformation of Superelastic SMA-Based Honeycomb Structures

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-02-05 DOI: 10.1007/s10338-024-00523-2

Yahao Wang, Wenjiong Chen, Renjing Gao, Shutian Liu

{"title":"Theoretical and Experimental Analysis of Nonlinear Large Tensile Deformation of Superelastic SMA-Based Honeycomb Structures","authors":"Yahao Wang, Wenjiong Chen, Renjing Gao, Shutian Liu","doi":"10.1007/s10338-024-00523-2","DOIUrl":"10.1007/s10338-024-00523-2","url":null,"abstract":"<div><p>Honeycomb structures of shape memory alloy (SMA) have become one of the most promising materials for flexible skins of morphing aircraft due to their excellent mechanical properties. However, due to the nonlinear material and geometric large deformation, the SMA honeycomb exhibits significant and complex nonlinearity in the skin and there is a lack of relevant previous research. In this paper, the nonlinear properties of the SMA honeycomb structure with arbitrary geometry are investigated for the first time for large deformation flexible skin applications by theoretical and experimental analysis. Firstly, a novel theoretical model of SMA honeycomb structure considering both material and geometric nonlinearity is proposed, and the corresponding calculation method of nonlinear governing equations is given based upon the shooting method and Runge–Kutta method. Then, the tensile behaviors of four kinds of SMA honeycomb structures, i.e., U-type, V-type, cosine-type, and trapezoid-type, are analyzed and predicted by the proposed theoretical model and compared with the finite element analysis (FEA) results. Moreover, the tensile experiments were carried out by stretching U-type and V-type honeycomb structures to a global strain of 60% and 40%, respectively, to perform large deformation analysis and verify the theoretical model. Finally, experimental verification and finite element validation show that the curves of the theoretical model results, experimental results, and simulation results are in good agreement, illustrating the generalizability and accuracy of the proposed theoretical model. The theoretical model and experimental investigations in this paper are considered to provide an effective foundation for analyzing and predicting the mechanical behavior of SMA honeycomb flexible skins with large extensional deformations.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 1","pages":"45 - 64"},"PeriodicalIF":2.0,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Progress and Prospect of Cryogenic Micro- and Nanomechanical In-Situ Characterization Techniques Based on Electron Microscopy

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-01-21 DOI: 10.1007/s10338-024-00548-7

Langlang Feng, Keqiang Li, Guangjian Peng

{"title":"Progress and Prospect of Cryogenic Micro- and Nanomechanical In-Situ Characterization Techniques Based on Electron Microscopy","authors":"Langlang Feng, Keqiang Li, Guangjian Peng","doi":"10.1007/s10338-024-00548-7","DOIUrl":"10.1007/s10338-024-00548-7","url":null,"abstract":"<div><p>The advancement of electron microscopy technology has driven the development of electron microscopes that can apply mechanical loading while observing samples, providing a valuable tool for In-Situ mechanical characterization of materials. In response to the need to characterize the evolution of the mechanical behavior of structural materials, such as aerospace materials, in real cryogenic service environments, and to provide an experimental basis for improving their macroscopic cryogenic mechanical properties, the advancement of In-Situ characterization techniques capable of offering both cryogenic environments and mechanical loading has become imperative. There have been scholars using this technique to carry out cryogenic mechanical In-Situ studies of related materials, with experimental studies dominating in general, and a few reviews of mechanical characterization techniques mentioning cryogenic temperatures. In order to make it easier to conduct research using such characterization techniques and to further promote the development of related characterization techniques, this review compiles the previous work and summarizes the electron microscope-based In-Situ characterization techniques for cryogenic micro- and nanomechanics. These techniques primarily include transmission electron microscopy-based cryogenic tensile and indentation methods, as well as scanning electron microscopy-based cryogenic tensile, indentation, compression, and bending methods. Furthermore, the review outlines the prospective future development of In-Situ characterization techniques for cryogenic micro- and nanomechanics.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 2","pages":"229 - 239"},"PeriodicalIF":2.0,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Scanning Secondary Moiré Method with Atomic-Level Resolution and Large Micrometer-Scale Field of View

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-01-02 DOI: 10.1007/s10338-024-00525-0

Yao Zhao, Yueyue Xu, Zhanwei Liu, Jiangfan Zhou, Han Liu, Jianxin Nie, Jinzhao Zhao

{"title":"The Scanning Secondary Moiré Method with Atomic-Level Resolution and Large Micrometer-Scale Field of View","authors":"Yao Zhao, Yueyue Xu, Zhanwei Liu, Jiangfan Zhou, Han Liu, Jianxin Nie, Jinzhao Zhao","doi":"10.1007/s10338-024-00525-0","DOIUrl":"10.1007/s10338-024-00525-0","url":null,"abstract":"<div><p>The measurement field of view of the conventional transmission electron microscopy (TEM) nano-moiré and scanning transmission electron microscopy (STEM) nano-moiré methods is limited to the hundred-nanometer scale, unable to meet the deformation field measurement requirements of micrometer-scale materials such as transistors and micro-devices. This paper proposed a novel measurement method based on scanning secondary moiré, which can realize cross-scale deformation field measurement from nanometers to micrometers and solve the problem of insufficient measurement accuracy when using only the TEM moiré method. This method utilized the electron wave in the TEM passing through the atomic lattice of two layers of different materials to generate TEM moiré. On this basis, the TEM was tuned to the STEM mode, and by adjusting parameters such as the amount of defocusing, magnification, scanning angle, etc., the electron beam was focused on the position near the interface of the two layers of materials, and at the same time, the scanning line was made approximately parallel to the direction of one of the TEM moiré fringes. The scanning secondary moiré patterns were generated when the scanning spacing was close to the TEM moiré spacing. Through this method, the deformation field, mechanical properties, and internal defects of crystals can be detected by a large field of view with high sensitivity and high efficiency. Compared to traditional methods, the advantages of scanning secondary moiré method lie in significantly improving the measurement field of TEM moiré and STEM moiré methods, realizing the cross-scale visualization measurement from nanometers to micrometers, and possessing atomic-level displacement measurement sensitivity. It can also simplify and efficiently identify dislocations, offering a new method for large-area visualization observation of dislocation density in broad application prospects.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 2","pages":"300 - 308"},"PeriodicalIF":2.0,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Developments and Future Perspectives in Nanowires Mechanics

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-11-29 DOI: 10.1007/s10338-024-00558-5

Junxiang Xiang, Heyi Wang, Jingzhuo Zhou, Yang Lu

引用次数: 0

Bending Characteristics of Folded Multi-celled Tubes with Square and Circular Section Geometries

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-11-22 DOI: 10.1007/s10338-024-00533-0

Rui Liang, Fengxiang Xu, Zhen Zou, Xiaoqiang Niu, Xuebang Tang, Tingpeng Li

{"title":"Bending Characteristics of Folded Multi-celled Tubes with Square and Circular Section Geometries","authors":"Rui Liang, Fengxiang Xu, Zhen Zou, Xiaoqiang Niu, Xuebang Tang, Tingpeng Li","doi":"10.1007/s10338-024-00533-0","DOIUrl":"10.1007/s10338-024-00533-0","url":null,"abstract":"<div><p>This research investigates the bending response of folded multi-celled tubes (FMTs) fabricated by folded metal sheets. A three-point bending test for FMTs with circular and square sections is designed and introduced. The base numerical models are correlated with physical experiments and a static crashworthiness analysis of six FMT configurations to assess their energy absorption characteristics. The influences of thickness, sectional shape, and load direction on the bending response are studied. Results indicate that increasing the thickness of the tube and radian of the inner tube enhances the crashworthiness performance of FMT, yielding a 20.50% increase in mean crushing force, a 55.53% increase in specific energy absorption, and an 18.05% decrease in peak crushing force compared to traditional multi-celled tubes (TMTs). A theoretical analysis of the specific energy absorption indicates that FMTs outperform TMTs, particularly when the peak crushing force is prominent. This study highlights the innovative and practical potential of FMTs to improve the crashworthiness of thin-walled structures.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 1","pages":"125 - 141"},"PeriodicalIF":2.0,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Experimental Studies on the Mechanics of Graphene: A Review

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-11-18 DOI: 10.1007/s10338-024-00537-w

Pei Zhao

引用次数: 0