Acta Mechanica Sinica最新文献

{"title":"Evaluating the hemodynamic impact of different aortic valve treatments via two-way FSI","authors":"Zhaomiao Liu \u0000 (,&nbsp;),&nbsp;Xinyi Zhou \u0000 (,&nbsp;),&nbsp;Yi Shi \u0000 (,&nbsp;),&nbsp;Yan Pang \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51135-x","DOIUrl":"10.1007/s10409-026-51135-x","url":null,"abstract":"<div><p>Conventional aortic valve replacement is used to treat aortic valve disease, but suffers from the limited prosthetic valve durability and the need for long-term anticoagulation, making it particularly difficult to meet the long-term needs of younger patients. As an alternative to conventional surgery, the Ozaki procedure and the Ross procedure do not require postoperative anticoagulation, offer better valve durability, and demonstrate lower reoperation rates. However, the mechanical response of the valves and the distribution of blood flow under dynamic flow conditions are not well characterized. In this study, we used three-dimensional two-way fluid-structure interaction (FSI) simulations to compare the differences in hemodynamics and valvular stress distribution between native aortic valves, Ozaki leaflets, Ross leaflets, and bioprosthetic heart valve (BHV). Our results demonstrated that the hemodynamic performance of the Ozaki and Ross leaflets was significantly superior to that of BHV and closely approximated that of native aortic valves. The Ozaki leaflets achieved the lowest transvalvular pressure gradient (TPG) owing to their greater leaflet height; the Ross leaflets maintained optimal flow distribution. In contrast, BHV leaflets were associated with a significantly elevated thrombotic risk due to elevated peak flow velocities and TPG, resulting from inherent stent design limitations. In terms of stress distribution, the Ross leaflets were closest to the natural leaflets due to their superior physiological geometric advantages, whereas BHVs exhibited the highest leaflet stress levels, and Ozaki leaflets showed high stress concentrations in the free edge region. This study provides a mechanical foundation for clinical decision-making by quantitatively comparing the physiological differences between different surgical leaflets and native leaflets.</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":"148927609","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":"Deformation-coupled dual-scale stick-slip friction in covalently bonded moiré superstructures","authors":"Yan Chen \u0000 (,&nbsp;),&nbsp;Siyu Liu \u0000 (,&nbsp;),&nbsp;Penghua Ying \u0000 (,&nbsp;),&nbsp;Yilun Liu \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51245-x","DOIUrl":"10.1007/s10409-026-51245-x","url":null,"abstract":"<div><p>While twist angle and stacking order have long been established as degrees of freedom for manipulating moiré superlattices and elasticity in two-dimensional (2D) material contacts, interlayer covalent bonding offers a distinct and efficient pathway to engineer these properties with enhanced structural tunability. Despite this potential, how such covalent modifications govern tribological behavior remains largely unexplored. Here, we employ molecular dynamics simulations to investigate the friction characteristics of interlayer-bonded strained bilayer graphene (IB-SBG) featuring tunable herringbone and honeycomb wrinkle morphologies. Our results reveal dual-scale stick-slip friction comprising long-range modulation at the moiré periodicity superimposed on atomic-scale stick-slip events. Wrinkle morphology governs the friction response: along the armchair sliding direction, herringbone wrinkles exhibit single stick-slip cycles per period, whereas honeycomb wrinkles display double cycles reflecting their closed-cell topologies, with both configurations showing direction-dependent friction signatures. Force decomposition analysis reveals that friction predominantly arises from in-plane deformation of the wrinkle, with interlayer covalent bonds acting as geometric anchors that localize strain and convert it into lateral resistance. A modified deformation-coupled Prandtl-Tomlinson (MDC-PT) model is developed that successfully captures these dual-scale characteristics for both configurations, establishing a unified theoretical framework for friction in covalently constrained moiré systems. Furthermore, honeycomb wrinkles exhibit negative differential friction at low normal loads, a phenomenon inaccessible to open-ridge herringbone morphologies. These findings provide both a generalizable theoretical framework and design principles for engineering programmable nanotribological interfaces through moiré morphology control.\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":"148986397","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":"Mixing and combustion characteristics in a scramjet combustor with rearwall-step cavity flameholder under different injection distances","authors":"Mingjiang Liu \u0000 (,&nbsp;),&nbsp;Huifeng Chen \u0000 (,&nbsp;),&nbsp;Yixin Yang \u0000 (,&nbsp;),&nbsp;Mingbo Sun \u0000 (,&nbsp;),&nbsp;Guoyan Zhao \u0000 (,&nbsp;),&nbsp;Guangwei Ma \u0000 (,&nbsp;),&nbsp;Fan Li \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51254-x","DOIUrl":"10.1007/s10409-026-51254-x","url":null,"abstract":"<div><p>Supersonic experiments and simulations were employed to investigate the mixing and combustion characteristics of a scramjet combustor with a rearwall-step cavity flameholder. A transverse ethylene jet injection scheme was employed at equivalence ratios (ER) of 0.20, 0.24, 0.28, 0.32, 0.36, and 0.40, with two distinct injection distances (i.e., <i>d</i> = 5 and 35 mm). Under short injection distance, the fuel plume has a lower flow velocity, and the cavity entrainment effect results in higher subsonic oxygen utilization efficiency and a larger subsonic zone, which is conducive to flame propagation and the flame maintained jet wake flame stabilization mode. Furthermore, subjected to the combustion backpressure, the short injection distance results in a higher penetration depth, thereby further enhancing the fuel-oxygen utilization efficiency. In contrast, the fuel distribution under a long injection distance basically conforms to the empirical formula, and the mixing efficiency is higher near the leading edge of the cavity. However, the high-velocity fuel plume restricts component transport, which results in a lower total oxygen utilization efficiency. Consequently, at <i>ER</i> = 0.20 and 0.24, the flame is anchored at the cavity shear layer, while <i>ER</i> = 0.36 and 0.40, significant combustion oscillation occurs near the cavity leading edge.</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":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927693","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":"Acoustic far-field prediction based on the inhomogeneous advective wave equation of the dimensionless density","authors":"Chenglong Fan \u0000 (,&nbsp;),&nbsp;An-Kang Gao \u0000 (,&nbsp;),&nbsp;Luoqin Liu \u0000 (,&nbsp;),&nbsp;Xi-Yun Lu \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51279-x","DOIUrl":"10.1007/s10409-026-51279-x","url":null,"abstract":"<div><p>The inhomogeneous advective wave equation of the dimensionless density is characterized by two distinct source terms caused by the surface deformation of fluid element and non-homentropic effect. Thus, it could be very useful in the diagnosis of physical sources in aeroacoustic problems. Due to the rather complex mathematical forms of the left-hand-side terms, this density-based advective wave equation has not been solved directly, and thus its capability for predicting acoustic far-field behavior remains unclear. In this study, we assess for the first time the far-field acoustic prediction performance of this equation in a two-dimensional spatially developing subsonic mixing layer. First, using high-fidelity direct numerical simulation (DNS), we obtain both the near-field sound sources and far-field acoustic data of the subsonic mixing layer. Next, we solve the density-based advective wave equation using a finite-difference method and the Lighthill acoustic analogy equation via the Green’s function method. The results demonstrate that both equations can accurately reproduce the radiated sound field obtained from DNS. Finally, by solving a simplified form of the density-based advective wave equation, where all viscous terms and the squared dilatation term are neglected, we find that the predicted radiated sound remains in good agreement with the DNS results, with a maximum deviation above the mixing layer less than 1.5 dB. This confirms that the inhomogeneous advective wave equation of the dimensionless density is capable of accurately predicting far-field sound.\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":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927629","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":"State transition matrix of variational integrators for Halo orbits","authors":"Yutao Sun \u0000 (,&nbsp;),&nbsp;Ben Niu \u0000 (,&nbsp;),&nbsp;Yuhan Song \u0000 (,&nbsp;),&nbsp;Shixing Liu \u0000 (,&nbsp;),&nbsp;Yongxin Guo \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51092-x","DOIUrl":"10.1007/s10409-026-51092-x","url":null,"abstract":"<div><p>The state transition matrix (STM) is the core to understand the sensitivity of dynamics to initial conditions. It serves as a critical tool for orbit design and control and provides the mathematical foundation for computing invariant manifolds. In conservative systems like the circular restricted three-body problem (CR3BP), the global geometry is governed by fundamental symmetries, such as symplecticity and time-reversal symmetry. However, few numerical schemes for computing the STM itself are designed to preserve these symmetries simultaneously. This paper proposes the STM of variational integrators, which is derived from discrete variational mechanics in Lagrangian viewpoint, ensuring the preservation of discrete Lagrangian symplectic structure. The STM is applied to the differential correction method in the CR3BP, and a case study for finding the near rectilinear Halo orbit (NRHO) is provided. Compared with classical Runge-Kutta methods, the numerical results indicate that the proposed method maintains high accuracy with large step sizes, and the STM possesses the properties of a symplectic matrix and time-reversal symmetry.</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":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927387","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":"Inverse design method for 2D-to-3D morphing of in-plane isotropic films","authors":"Xiaoxuan Wang \u0000 (,&nbsp;),&nbsp;Chenyi Bu \u0000 (,&nbsp;),&nbsp;Huimin Wu \u0000 (,&nbsp;),&nbsp;Jin Qian \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51248-x","DOIUrl":"10.1007/s10409-026-51248-x","url":null,"abstract":"<div><p>Programmable smart materials that transform from a two-dimensional (2D) film into a three-dimensional (3D) surface under external stimuli have broad applications in soft robotics, flexible devices, and bioinspired systems. However, existing studies primarily rely on forward design, in which stimulus-response distributions are iteratively adjusted to approximate a target shape—an approach that struggles with geometrically complex surfaces. This work introduces a generic inverse design method based on conformal mapping for thin-film materials with in-plane isotropy. The method directly retrieves the required 2D stimulus distribution from any prescribed three-dimensional target surface. Using the boundary first flattening algorithm, we obtain a high-accuracy conformal flattening parameterized by local area growth, which is then interpreted as programmable material parameters (e.g., thermal expansion coefficients). Under stimulus fields, these programmed parameters generate controlled in-plane strain mismatches that drive the film to morph into a surface with the desired 3D shape. Systematic finite element simulations on surfaces with constant Gaussian curvature, canonical geometric shapes, and complex real-world geometries demonstrate that the method can accurately reconstruct target three-dimensional forms with sufficient accuracy. Moreover, the framework allows mapping the same 3D surface onto 2D domains of different prescribed boundaries, enabling flexible control over the pre-deformation material geometries. Overall, this study provides a universal, precise, and efficient inverse design strategy for shape programming of isotropic thin-film materials and lays a theoretical foundation for the programmable fabrication of complex three-dimensional morphologies in soft devices.</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":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927386","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 and snap-through transitions in rotating soft tubes with Ogden material under axial pre-stretch","authors":"Kecheng Li \u0000 (,&nbsp;),&nbsp;Yuwei Yan \u0000 (,&nbsp;),&nbsp;Guannan Wang \u0000 (,&nbsp;),&nbsp;Chaofeng Lü \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51205-x","DOIUrl":"10.1007/s10409-026-51205-x","url":null,"abstract":"<div><p>Rotating hyperelastic tubes are essential components in flexible robotics and biomedical devices, where instability behavior directly affects structural reliability. Based on the Ogden material, this study investigates the nonlinear instability of such tubes under combined axial pre-stretch and rotational loading. A unified theoretical framework integrating nonlinear elastic theory and incremental stability analysis is developed to capture both buckling and snap-through modes. Finite element simulations validate the theoretical predictions of nonlinear finite deformation, demonstrating the model’s accuracy in capturing the deformation state prior to instability. Results show that the initial radius ratio and axial pre-stretch are the key parameters governing the instability transition. Thin-walled tubes with small radius ratios are prone to constraint- or rotation-induced buckling, while thicker tubes experience snap-through at higher rotating speeds. The critical rotating speed for snap-through increases nearly linearly with axial pre-stretch, indicating the stabilizing role of tensile pre-stress. The findings also clarify the competition mechanisms between the rotating-induced buckling instability and snap-through instability, and highlight how geometry and pre-stretch jointly determine the critical thresholds and deformation modes. This work enhances the understanding of instability in rotating soft structures and provides theoretical guidance for optimizing geometric design and loading conditions to improve stability and operational safety in soft robotic and biomedical applications.</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":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927199","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":"Universal expression for the intrinsic periodic length at the threshold of the primary buckling instability in finite-thickness stiff/soft bilayer films","authors":"Yancheng Meng \u0000 (,&nbsp;),&nbsp;Hui He \u0000 (,&nbsp;),&nbsp;Xiaoyun Liu \u0000 (,&nbsp;),&nbsp;Jianqiang Zhang \u0000 (,&nbsp;),&nbsp;Yufeng Chen \u0000 (,&nbsp;),&nbsp;Feng Chen \u0000 (,&nbsp;),&nbsp;Xintong Shen \u0000 (,&nbsp;),&nbsp;Zhixiang Wang \u0000 (,&nbsp;),&nbsp;Hao Yang \u0000 (,&nbsp;),&nbsp;Wanlin Guo \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51229-x","DOIUrl":"10.1007/s10409-026-51229-x","url":null,"abstract":"<div><p>Buckling deformations in stiff/soft bilayers, consisting of a stiff membrane and a soft film, involve complex, multi-order evolutionary processes. The intrinsic periodic length <i>λ</i>₀ at the threshold of the primary buckling instability can be regarded as a characteristic length of buckling deformation, providing a key reference for quantifying advanced buckling modes. However, the two prevalent expressions for <i>λ</i>₀ are approximate results obtained under the respective limiting assumptions of an infinitely thick soft film and an infinitely thin one. Since soft films invariably have finite thickness in practice, the approximate expressions often fail to accurately capture <i>λ</i>₀. To overcome this shortcoming, we develop a universal <i>λ</i>₀ expression based on a rigorous theoretical approach and precise boundary conditions. This expression shows that, as the thickness contrast between the soft and stiff layers gradually increases above 1, <i>λ</i>₀ exhibits rapid initial growth followed by saturation. We conducted systematic experiments to validate this dependency, finding it is valid across the entire range of thickness contrasts in multiple bilayer systems. It is this dependency that accounts for the existence of two markedly different approximate expressions for <i>λ</i>₀ in the two limiting cases of soft film thickness. Our expression can be reduced directly to existing approximate forms by introducing limiting conditions. These results indicate that our expression encompasses existing approximate formulas, representing a more comprehensive, universal form.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7109,"journal":{"name":"Acta Mechanica Sinica","volume":"42 11","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927442","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":"Mode-clustering dynamic mode decomposition method for spatial-temporal multi-scale instantaneous flow fields","authors":"Xiaojian Li \u0000 (,&nbsp;),&nbsp;Jinyang Li \u0000 (,&nbsp;),&nbsp;Binghua Li \u0000 (,&nbsp;),&nbsp;Zhengxian Liu \u0000 (,&nbsp;),&nbsp;Yongxing Gong \u0000 (,&nbsp;),&nbsp;Jianghua Cheng \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-25945-x","DOIUrl":"10.1007/s10409-026-25945-x","url":null,"abstract":"<div><p>Dynamic mode decomposition (DMD) is one of powerful tools for flow field data analysis. For spatial-temporal multi-scale instantaneous flow fields, the DMD modes possess broadband spectral characteristics, and they always carry similar spatial and temporal features with closed physical meanings. However, it is commonly time-consuming and low-precise to manually identify and distinguish these similar modes. To solve the problem, this study innovatively proposes a DMD variant named as mode-clustering dynamic mode decomposition (MC-DMD). Firstly, a mode similarity criterion is defined based on mode spatial-temporal similarity to identify flow structures with the same physical meaning. Secondly, a mode feature identification method is proposed, and the K-means++ algorithm is introduced to obtain mode clusters containing similar modes. Thirdly, the energy of a mode cluster is defined, and a new ranking criterion of mode clusters is proposed to achieve efficient identification of flow field structures. Finally, the effectiveness of MC-DMD method in mode feature extraction, similarity mode classification, and flow field structure identification is verified through three typical cases.</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":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927197","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":"Modeling high-cycle and very-high-cycle fatigue in L-PBF AlSi10Mg considering melt pool microstructure heterogeneity","authors":"Mingqi Lei \u0000 (,&nbsp;),&nbsp;Lu Liu \u0000 (,&nbsp;),&nbsp;Yao Yao \u0000 (,&nbsp;)","doi":"10.1007/s10409-026-51024-x","DOIUrl":"10.1007/s10409-026-51024-x","url":null,"abstract":"<div><p>The fatigue performance of additively manufactured (AM) aluminum alloys is strongly dependent on their unique microstructure. This work introduces a crystal plasticity finite element model for AM AlSi10Mg that explicitly incorporates key microstructural features, including melt pool structures, grain orientations, and initial internal defects. After validating the model against uniaxial tensile test data, it was employed to predict both high-cycle and very-high-cycle fatigue life. A comparison of two fatigue indicator parameters showed that the one based on the Fatemi-Socie criterion yielded significantly more accurate life predictions under various stress ratios. Furthermore, an investigation into the effect of internal defect size on fatigue life revealed a negative linear correlation on a logarithmic scale.</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":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927201","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}