Acta Mechanica Sinica最新文献

{"title":"An inquiry into how flexibility and wrinkles affect the aerodynamics of dragonfly forewings during gliding flight through gusty winds","authors":"Zhixin Zhan \u0000 (,&nbsp;),&nbsp;Guoyi He \u0000 (,&nbsp;),&nbsp;Zitong Huang \u0000 (,&nbsp;),&nbsp;Wei Song \u0000 (,&nbsp;),&nbsp;Longsheng Chen \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-25904-x","DOIUrl":"10.1007/s10409-026-25904-x","url":null,"abstract":"<div><p>Dragonflies possess superior flight capabilities to those of other insects and achieve efficient and stable flight by overcoming aerodynamic constraints such as excessive viscosity in low-Reynolds-number environments through unique biomechanical mechanisms. In this study, we employ a two-way coupled CFD/CSD approach to simulate rigid and flexible high-fidelity 3D wrinkled dragonfly forewing models, along with 3D flat plate models of identical external contours, at a freestream velocity of 5 m s⁻¹ under 20% sinusoidal vertical gust conditions. The results demonstrate that the wrinkle structure plays a critical role in enhancing the lift and lift-to-drag ratio observed during gusty gliding flights. While pure flexibility alone leads to reduced lift and a lower lift-to-drag ratio with deteriorated aerodynamic performance, the coupling of flexibility with the wrinkled structure significantly amplifies the lift-to-drag ratio of the wrinkled forewings.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7109,"journal":{"name":"Acta Mechanica Sinica","volume":"42 12","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986810","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}

{"title":"A theoretical model of lipid raft-mediated endocytosis","authors":"Yudie Zhang \u0000 (,&nbsp;),&nbsp;Long Li \u0000 (,&nbsp;),&nbsp;Jizeng Wang \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51049-x","DOIUrl":"10.1007/s10409-026-51049-x","url":null,"abstract":"<div><p>Lipid rafts, functioning as specialized microdomains in the plasma membrane, are critically involved in facilitating endocytosis. While substantial evidence underscores the importance of lipid rafts and their interplay with the actin cytoskeleton in driving membrane invagination, the mechanical principles governing their coordinated action remain incompletely understood. To address this, we develop a theoretical model of lipid raft-mediated endocytosis based on Helfrich elastic membrane theory through introducing active cytoskeletal forces exerted on the lipid raft. This model enables a systematic investigation into how raft domain size and active cytoskeletal forces collectively regulate membrane deformation and endocytic efficiency. Our results show that raft size primarily governs the extent of membrane invagination, while actin-generated forces regulate the degree of pit closure. The critical raft size and active force required for complete wrapping of the nanoparticle (NP) are also found. Moreover, there exists an energy-based competition between raft size and NP stiffness: under raft-deficient conditions, stiffer NPs are preferentially wrapped, whereas under raft-sufficient conditions, softer ones are favored due to their lower elastic energy cost. These findings imply that cells may fine-tune endocytic efficacy and metabolic economy by modulating raft aggregation states. This work provides a foundational theoretical framework for understanding the mechanics of actin-assisted, lipid raft-dependent endocytosis.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7109,"journal":{"name":"Acta Mechanica Sinica","volume":"42 12","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986489","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}

{"title":"Internal solitary waves within background shear currents in a three-layer fluid system","authors":"Zhuoyue Li \u0000 (,&nbsp;),&nbsp;Haibao Hu \u0000 (,&nbsp;),&nbsp;Chen Chen \u0000 (,&nbsp;),&nbsp;Zhan Wang \u0000 (,&nbsp;),&nbsp;Zhongliang Xie \u0000 (,&nbsp;),&nbsp;Peng Du \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51039-x","DOIUrl":"10.1007/s10409-026-51039-x","url":null,"abstract":"<div><p>Ocean shear currents are ubiquitous and have a profound effect on the characteristics of internal solitary waves (ISWs). A systematic study is conducted on how linear and nonlinear background shear currents affect the structure and induced dynamics of mode-1 and mode-2 ISWs in three-layer system. A simulation method for ISWs in background shear currents is developed by coupling the high-level Green-Naghdi (HLGN) theory with computational fluid dynamics (CFD). This hybrid approach enables the modeling of mode-1 and mode-2 ISWs under background shear currents with arbitrary vertical structures, while achieving a favorable balance between computational efficiency and domain size. For mode-1 ISWs, positive vorticity currents broaden the upper and lower wave profiles while attenuating the lower amplitude, effectively thinning the pycnocline, and reducing wave-induced horizontal velocity differences across the pycnocline, vertical velocity, and propagation speed. Negative vorticity currents induce the opposite effects. For mode-2 ISWs, positive vorticity background shear currents (relative to wave-induced vorticity at the trough) broaden the lower profile while narrowing the upper profile and reducing its amplitude, weakening velocity signatures and slowing propagation. Negative vorticity currents enhance these characteristics. Overall, background shear currents play a dominant regulatory role by significantly modifying the density stratification, shear distribution, and propagation characteristics of internal solitary waves. When nonlinear shear currents are considered, the resulting effects are weaker but exhibit increased complexity. These results deepen our understanding of wave-current interactions in stratified oceans and offer a useful basis for future investigations of complex stratified flows.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7109,"journal":{"name":"Acta Mechanica Sinica","volume":"42 12","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986495","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}

{"title":"Model reduction for complex pipes conveying fluid using spectral submanifolds: From circular, S-shaped pipes to pipelines with multiple branches","authors":"Jiachen Wei \u0000 (,&nbsp;),&nbsp;Yixiang He \u0000 (,&nbsp;),&nbsp;Yiliang Wang \u0000 (,&nbsp;),&nbsp;Huliang Dai \u0000 (,&nbsp;),&nbsp;Lin Wang \u0000 (,&nbsp;),&nbsp;Mingwu Li \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-60031-x","DOIUrl":"10.1007/s10409-026-60031-x","url":null,"abstract":"<div><p>Pipes conveying fluid play a fundamental role in aerospace, nuclear, and civil engineering. Finite element methods, such as the absolute nodal coordinate formulation (ANCF), are powerful tools for modeling complex pipelines that convey fluid. However, the associated finite element models (FEMs) are high-dimensional nonlinear systems, which are computationally expensive to simulate and analyze. Here, we present a model reduction framework for complex pipelines via spectral submanifolds (SSMs) to handle the curse of high dimensionality. We use ANCF to model complex pipelines, derive cubic truncated FEMs of the ANCF-based models to simplify the non-polynomial nonlinearities, and then construct SSM-based reduced-order models (ROMs) for the cubic FEMs. The SSM-based ROMs enable efficient and accurate predictions on the free and forced vibrations of the pipes. We use circular, S-shaped pipes, and a pipeline with multiple branches to demonstrate the effectiveness of the proposed reduction framework. The simulation results demonstrate that the proposed computational framework can accurately capture the intrinsic nonlinear dynamic characteristics while substantially reducing computational cost.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7109,"journal":{"name":"Acta Mechanica Sinica","volume":"42 12","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986435","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}

{"title":"An enhanced physics-informed neural network framework with domain decomposition for Rayleigh-Bénard convection and quasi-two-dimensional magnetoconvection","authors":"Zhi-Han Wu \u0000 (,&nbsp;),&nbsp;Qi-Xian Hu \u0000 (,&nbsp;),&nbsp;Xin-Ran Li \u0000 (,&nbsp;),&nbsp;Ze-Min Wu \u0000 (,&nbsp;),&nbsp;Long Chen \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-60042-x","DOIUrl":"10.1007/s10409-026-60042-x","url":null,"abstract":"<div><p>Convection at high Rayleigh numbers poses a significant challenge for physics-informed neural networks, due to the coexistence of steep boundary-layer gradients and multiscale bulk structures. To mitigate the spectral bias and optimization stiffness of conventional architectures, we introduce a novel framework that integrates sinusoidal representation networks with a domain-decomposition strategy. The physical domain is partitioned into dedicated sub-networks, each assigned to a distinct flow region: the near-wall thermal boundary layers and the bulk. A sequential transfer-learning protocol accelerates convergence across parameter spaces, while a hybrid optimizer rigorously enforces the physical constraints. Validated against direct numerical simulation data for both Rayleigh-Bénard convection and quasi-two-dimensional magnetoconvection, the proposed framework achieves a computational speedup of 1.75 × over monolithic models without compromising accuracy. Moreover, our analysis demonstrates that employing a physics-informed curriculum—transferring weights from high-dissipation (stable) to low-dissipation (fluctuating) regimes—significantly enhances the stability of the training process.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7109,"journal":{"name":"Acta Mechanica Sinica","volume":"42 12","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986263","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}

{"title":"Turbulence amplification mechanisms in oblique shock wave/turbulent boundary layer interactions","authors":"Yongchao Ji \u0000 (,&nbsp;),&nbsp;Zhou Jiang \u0000 (,&nbsp;),&nbsp;Hongjie Zhong \u0000 (,&nbsp;),&nbsp;Xuke Zhu \u0000 (,&nbsp;),&nbsp;Xiaoshuo Yang \u0000 (,&nbsp;),&nbsp;Zhenhua Xia \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51183-x","DOIUrl":"10.1007/s10409-026-51183-x","url":null,"abstract":"<div><p>Direct numerical simulations are performed to investigate the amplification mechanism of turbulent kinetic energy (TKE) in oblique shock wave/turbulent boundary-layer interactions (OSBLIs) at a Mach number of 2.25. Four incident shock angles (β = 29.0°, 32.0°, 33.2°, and 36.0°) are considered, revealing that the size of the separation region and the intensity of TKE amplification grow with increasing shock strength. To elucidate the underlying physics, the TKE production term, <i>P</i>_<i>k</i>, is decomposed within a local mean streamline coordinate system. This analysis demonstrates that the production of TKE is overwhelmingly dominated by its pure shear component, <i>P</i><span>\u0000 ^†_<i>s</i>\u0000 \u0000 </span>, across all investigated cases. We identify that the shock-induced flow separation creates a strong shear layer between the sonic line and the near-wall zero-velocity streamline above the reversed flow. The interaction of the Reynolds shear stress with the mean velocity gradient under this streamline coordinate in this shear layer is the primary mechanism for transferring mean kinetic energy into turbulence. This shear-dominated production mechanism is found to be universal for OSBLIs in the studied range, providing a consistent physical interpretation that is obscured in a traditional Cartesian coordinate framework.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7109,"journal":{"name":"Acta Mechanica Sinica","volume":"42 12","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927608","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}

{"title":"A self-calibrating sampling moiré phase analysis method for strain and twist mapping in 2D heterostructures","authors":"Xinshuai Peng \u0000 (,&nbsp;),&nbsp;Guorui Wang \u0000 (,&nbsp;),&nbsp;Jingchao Xu \u0000 (,&nbsp;),&nbsp;Xiqi Wu \u0000 (,&nbsp;),&nbsp;Zhao Zhang \u0000 (,&nbsp;),&nbsp;Hong Miao \u0000 (,&nbsp;),&nbsp;Zhong Zhang \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51171-x","DOIUrl":"10.1007/s10409-026-51171-x","url":null,"abstract":"<div><p>Accurate mapping of nanoscale displacement, in-plane strain, and twist-angle variations in moirésuperlattices is essential for interpreting their emergent structural and electronic behaviors. Conventional geometric phase analysis (GPA) relies on Gaussian-window filtering and is sensitive to the manually selected window size, which causes spectral leakage and reduces robustness under noise or large deformation gradients. Here, we propose a self-calibrating sampling moiréGPA (SM-GPA) that replaces the Gaussian window with an isotropic conical spatial kernel intrinsically matched to the moiréperiod. This design enables stable phase demodulation without user-defined parameters, enhancing spectral localization and noise resilience. Numerical simulations across broad ranges of deformation and noise confirm that SM-GPA achieves substantially lower reconstruction error and higher stability compared with conventional GPA. Application to lateral-force microscopy (LFM) images of twisted graphene/hexagonal boron nitride heterostructures further validates the approach, yielding quantitative displacement fields together with spatially resolved maps of local twist angle and heterostrain. The method also quantifies residual strain and shear at constrained and free boundaries, revealing how mechanical constraints influence local relaxation. These results establish SM-GPA as a reliable, high-fidelity framework for nanoscale strain mapping and provide practical guidance for the mechanical design and controlled assembly of van der Waals heterostructures.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7109,"journal":{"name":"Acta Mechanica Sinica","volume":"42 12","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927607","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}

{"title":"Investigation of wave pattern transition-induced nozzle performance response of an oblique detonation engine","authors":"Shuai Wang \u0000 (,&nbsp;),&nbsp;Ge Wang \u0000 (,&nbsp;),&nbsp;Ben Guan \u0000 (,&nbsp;),&nbsp;Haiwei Yang \u0000 (,&nbsp;),&nbsp;Zhibang Wang \u0000 (,&nbsp;),&nbsp;Xisheng Luo \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-60158-x","DOIUrl":"10.1007/s10409-026-60158-x","url":null,"abstract":"<div><p>The flow characteristics and propulsion performance of an elementary oblique detonation engine nozzle are investigated numerically in the present work. Emphasis is put on the nozzle internal wave pattern and its transition during flight velocity variations. Typical wave structures of the nozzle flow are identified in the design and off-design operating conditions by manipulating the nozzle geometry parameters, the internal wave pattern transitions are examined by linearly adjusting the nozzle incoming flow velocity, the corresponding nozzle propulsion performances are demonstrated, and the underlying mechanisms are interpreted. It shows that, compared to the scenario of downstream-side oblique detonation wave reflection relative to the turning point, the scenario of upstream-side reflection results in a larger performance degradation and needs to be avoided as much as possible. During flight velocity variations, changes take place in incoming flow total pressure, high-pressure zone area behind the Mach stem, and incidence angle of the reflected shock wave on the nozzle lower wall. These changes are found to function in not the same way, so that they give rise to prominent non-monotonic force variations on the nozzle walls and then lead to a mismatch between the linear flight velocity variation and nozzle propulsion performance. Finally, the feasibility of a practical countermeasure to mitigate this mismatch is discussed. This countermeasure applies a linearly moving symmetric ramp configuration to improve the linearity of the present nozzle propulsion performance, mitigate the performance response lagging, and therefore eliminate the mismatch issues.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7109,"journal":{"name":"Acta Mechanica Sinica","volume":"42 12","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986398","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}

{"title":"Buckling evolution and energy dissipation of 3D-printed second-order fractal bio-inspired structures","authors":"Dandan Gao \u0000 (,&nbsp;),&nbsp;Hao Yan \u0000 (,&nbsp;),&nbsp;Ying Zhou \u0000 (,&nbsp;),&nbsp;Tao Wang \u0000 (,&nbsp;),&nbsp;Guangyan Huang \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51189-x","DOIUrl":"10.1007/s10409-026-51189-x","url":null,"abstract":"<div><p>Bio-inspired lightweight, high-impact structures possess exceptional energy-absorption capabilities, and their performance optimization is crucial for industries such as aerospace, transport, and protective equipment. Inspired by spider web and marsh horsetail structures, in this study, circular and ortho-hexagonal thin-walled structures with internal interconnecting ribs and second-order layering were prepared using polylactic acid (PLA) as the raw material by 3D printing. The research integrates experimental tests (including quasi-static compression and drop-weight impact), characterization analysis (digital image correlation (DIC)), finite element numerical simulations, and theoretical model validation, focusing on the compressive strength, buckling deformation, and energy absorption characteristics of different structures at equal mass. Results indicate that, at equal mass, the second-order hierarchical structures exhibit significantly superior compressive strength and energy absorption capabilities compared to the first-order structures. The simulation results, experimental data, and theoretical derivation show excellent agreement, revealing the buckling evolution and strengthening mechanism of the multilevel structure. The research provides valuable insights and a design framework for developing lightweight, impact-resistant multicellular structures.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7109,"journal":{"name":"Acta Mechanica Sinica","volume":"42 12","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986399","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}

{"title":"Gradient-stiffness star-shaped auxetic metamaterial for high-energy absorption","authors":"Zhenghong Li \u0000 (,&nbsp;),&nbsp;Zhenwei Wang \u0000 (,&nbsp;),&nbsp;Yuheng Liu \u0000 (,&nbsp;),&nbsp;Haibao Lu \u0000 (,&nbsp;),&nbsp;Hong Gao \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-60138-x","DOIUrl":"10.1007/s10409-026-60138-x","url":null,"abstract":"<div><p>Conventional uniform auxetic structures typically exhibit single deformation modes and insufficient load-carrying stability, which significantly limit their application in critical energy absorption scenarios. A novel star-shaped metamaterial engineered with a gradient stiffness design was developed in this study to overcome these drawbacks. An analytical constitutive model was established and validated through finite element analysis and compression experiments, showing excellent agreement. Uniquely, this study established a sinusoidal model using a densification approach. By applying the gradient stiffness principle to regulate the deformation process, the design establishes a fail-safe barrier distinct from the sudden buckling often observed in conventional metamaterials. This mechanism ensures structural integrity under extreme deformation, thereby providing reliable overload protection for engineering applications, such as shock absorbers for Martian landers and anticollision hulls. Furthermore, dynamic impact tests verified the superior energy dissipation of the structure compared to traditional cushioning materials. Under quasi-static compression, the peak load-bearing capacity reaches 13.5–21.0 kPa across the studied parameter space, and the maximum strain energy attains 3.98 J at a displacement of 20 mm. Consequently, the proposed metamaterial exhibits higher compressive strength and energy absorption than uniform structures, providing a predictable and robust solution for advanced protective systems.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7109,"journal":{"name":"Acta Mechanica Sinica","volume":"42 12","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986401","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}