International Journal of Mechanical Sciences最新文献_第5页

Multi-degree-of-freedom piezoelectric actuators: Recent advances and challenges 多自由度压电驱动器：最新进展与挑战

IF 9.4 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences

Pub Date : 2026-01-05 DOI: 10.1016/j.ijmecsci.2026.111197

Zhiyong Pan, Liang Wang, Haoren Feng, Jiamei Jin

Multi-degree-of-freedom (M-DOF) actuation technology has garnered extensive research and applications in precision positioning, optical alignment, and biomedical manipulation due to its salient advantages of flexible motion, high integration, and reliability. Advancements in novel materials have facilitated the development of M-DOF actuators based on diverse driving principles. Compared with other actuation mechanisms, M-DOF piezoelectric actuators have become a critical solution for performance enhancement and holistic optimization of precision actuation systems. Their compact structure, rapid response, high precision, low-speed high-torque capability, and electromagnetic interference-free operation have attracted significant attention. This paper provides a comprehensive review of research progress in M-DOF piezoelectric actuators over the past three decades. First, current challenges and development trends in M-DOF actuation technology are outlined, with comparative analysis highlighting the unique advantages of piezoelectric actuators. Next, a systematic classification of M-DOF piezoelectric actuators is presented alongside their primary application domains. Finally, challenges are analyzed through five key design aspects, and future research directions are prospected. This review aims to establish a foundational reference for advancing research and applications in M-DOF piezoelectric actuators.

多自由度驱动技术以其运动灵活、集成度高、可靠性高等突出优点，在精密定位、光学对准、生物医学操作等领域得到了广泛的研究和应用。新材料的进步促进了基于不同驱动原理的多自由度驱动器的发展。与其他驱动机构相比，多自由度压电驱动器已成为提高精密驱动系统性能和整体优化的关键解决方案。其结构紧凑、响应速度快、精度高、低速高扭矩、无电磁干扰等特点引起了人们的广泛关注。本文对近三十年来多自由度压电作动器的研究进展进行了综述。首先，概述了当前多自由度驱动技术面临的挑战和发展趋势，并通过对比分析，突出了压电驱动器的独特优势。接下来，介绍了M-DOF压电驱动器的系统分类及其主要应用领域。最后，通过五个关键设计方面分析了面临的挑战，并对未来的研究方向进行了展望。本文综述旨在为推进多自由度压电作动器的研究和应用提供基础参考。

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引用次数: 0

Lattice Boltzmann method for torsional problem of cylindrical bodies 柱体扭转问题的晶格玻尔兹曼方法

IF 9.4 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences

Pub Date : 2026-01-05 DOI: 10.1016/j.ijmecsci.2026.111204

Mingshan Yang, Xiangyu Li

Lattice Boltzmann method (LBM) has attracted considerable attention owing to its outstanding advantages in inherent parallelizability, algorithmic simplicity, and efficient handling of complex boundaries. However, the LBM essentially remains a computational fluid dynamics method to date. It is difficult to apply the LBM to solid mechanics due to the difference in physical background. In this work, the LBM is extended to torsion problems of cylindrical bodies in solid mechanics for the first time. In the context of rigorous elasticity, the original torsion problem of cylindrical bodies is transformed into solving the 2D Laplace equation defined on the cross-sections. A high-efficiency LB model is developed to solve this Laplace equation. A new boundary treatment scheme is created, which enables the convenient imposition of the Neumann boundary condition on arbitrary curved geometries. The validity of the proposed LB scheme is thoroughly verified through comparisons with analytical solutions, finite element simulations, and experimental results. An application example is presented to demonstrate its potential in evaluation of torsional performance of aircraft wings. This work provides an efficient and easy-to-implement numerical tool for evaluating and optimizing the torsional performance of cylindrical bodies. It significantly expands the application scope of the LBM.

晶格玻尔兹曼方法（Lattice Boltzmann method， LBM）以其固有的并行性、算法的简单性和对复杂边界的高效处理等突出优点而受到广泛关注。然而，迄今为止，LBM基本上仍然是一种计算流体动力学方法。由于物理背景的不同，使LBM难以应用于固体力学。本文首次将LBM推广到固体力学中圆柱体的扭转问题。在严格弹性力学的背景下，将原圆柱体的扭转问题转化为求解定义在截面上的二维拉普拉斯方程。建立了求解该拉普拉斯方程的高效LB模型。提出了一种新的边界处理方案，可以方便地在任意曲面几何上施加诺伊曼边界条件。通过与解析解、有限元模拟和实验结果的比较，彻底验证了所提出的LB方案的有效性。最后给出了一个应用实例，说明了该方法在飞机机翼扭转性能评价中的应用潜力。这项工作为圆柱体扭转性能的评估和优化提供了一种高效且易于实现的数值工具。极大地扩展了LBM的应用范围。

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引用次数: 0

Dynamic modeling of rotating disk-shaft systems considering flexible interfacial connection 考虑柔性界面连接的转盘-轴系统动力学建模

IF 9.4 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences

Pub Date : 2026-01-05 DOI: 10.1016/j.ijmecsci.2026.111210

Xi Kuang, Zhansheng Liu, Peng He

Disk-shaft assembly systems are widely utilized in aerospace equipment. Their dynamic behaviors are prone to alterations during operation due to flexible interfacial connections (FIC), leading to mechanical failures. However, the existing FIC model neglects the interfacial 3D coupled deformations and arbitrary spatially varying stiffness distribution (SVSD). In this paper, a new dynamic model is proposed within an isogeometric framework: An FIC model capable of considering 3D coupled deformations and SVSD is developed, and the shaft and disk models are respectively modeled using rotation-free (RF) Timoshenko beam theory and 3D elasticity theory. The FIC model is integrated into the system based on the Nitsche method, with the governing equation derived via Hamilton's principle. On this basis, experimental validation is conducted to validate the proposed model. The influence of interfacial 3D coupled deformations, SVSD and tightening torques on the system’s vibration characteristics under various geometric parameters and rotational speeds is explored. The proposed modeling method can be generalized to complex rotor systems involving multiple irregular flexible thin/thick disks or nonlinear coupling interfaces exhibiting spatiotemporal dependencies, providing an efficient framework for better capturing vibration characteristics of intricate rotor systems in practical engineering machinery.

盘轴组合系统广泛应用于航空航天设备。由于柔性界面连接（FIC）的存在，其动态行为容易发生改变，从而导致机械故障。然而，现有FIC模型忽略了界面三维耦合变形和任意空间变刚度分布（SVSD）。本文在等几何框架下提出了一种新的动力模型：建立了考虑三维耦合变形和SVSD的FIC模型，并分别采用无旋转（RF） Timoshenko梁理论和三维弹性理论对轴和盘模型进行了建模。基于Nitsche方法将FIC模型集成到系统中，并通过Hamilton原理推导出控制方程。在此基础上，对所提模型进行了实验验证。探讨了不同几何参数和转速下，界面三维耦合变形、SVSD和拧紧力矩对系统振动特性的影响。该建模方法可推广到包含多个不规则柔性薄/厚盘或具有时空依赖性的非线性耦合界面的复杂转子系统，为工程机械实际中复杂转子系统的振动特性捕获提供了一个有效的框架。

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引用次数: 0

Programming Mechanical Metamaterial Properties with Boundary Displacement Constraint1 基于边界位移约束的机械超材料性能规划[j]

IF 7.3 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences

Pub Date : 2026-01-05 DOI: 10.1016/j.ijmecsci.2026.111207

Weida Kang, Junqi Jiang, Qian Cheng, Hengxu Song, Xudong Liang

引用次数: 0

The transient mechanics thermal diffusion coupling model of a bar 棒材的瞬态力学-热扩散耦合模型

IF 9.4 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences

Pub Date : 2026-01-05 DOI: 10.1016/j.ijmecsci.2026.111203

Weibin Wang, Feng Deng, Wenshan Yu, Shengping Shen

The simultaneous and instantaneous occurrence of ultra-short time species diffusion, thermal transportation and mechanical deformation in the thermal protection system and the high-power devices usually produces the complex responses of coupled multi-physical fields, which greatly impacts the service performance of the key materials and structures components. In this study, the second-order rate and characteristic time are introduced to include transient effects through Taylor expansion, the governing equations of a transient mechanics thermal diffusion (MTD) coupled model are established to discuss the coupling and transient effects on the responses of physical field such as the temperature, concentration, chemical potential and stress distribution along a bar. The derivation method of this paper follows the assumption of local equilibrium in non-equilibrium thermodynamics and establishes the linear flux-force relations that essentially ensures the positive definiteness of entropy production rate. In addition, it is found that the stress solution of the MT coupled problem can be expressed as that of decoupled counterparts subtract an empirical function. With this, the mechanism of sudden stress change at the elastic wavefront location in the MT coupled model can be well revealed. Furthermore, the relative locations of elastic, thermal and diffusion wavefronts may change since the wave velocity dependent on the characteristic time may vary as the material property evolves. The conclusions and findings of this study may provide a new way for the design, manufacturing and modeling analysis of high-temperature thermal protection materials and high-power devices.

热防护系统和大功率器件中超短时物质扩散、热输运和机械变形同时发生，往往会产生多物理场耦合的复杂响应，极大地影响关键材料和结构部件的使用性能。通过Taylor展开，引入二阶速率和特征时间来考虑瞬态效应，建立了瞬态力学-热扩散（MTD）耦合模型的控制方程，讨论了温度、浓度、化学势和应力沿杆分布等物理场响应的耦合和瞬态效应。本文的推导方法遵循了非平衡热力学中的局部平衡假设，建立了线性的通量-力关系，从本质上保证了熵产率的正确定性。此外，还发现了MT耦合问题的应力解可以表示为解耦对应体的应力解减去一个经验函数。由此可以很好地揭示MT耦合模型中弹性波前位置应力突变的机理。此外，弹性波前、热波前和扩散波前的相对位置可能发生变化，因为依赖于特征时间的波速可能随着材料性质的变化而变化。本研究的结论和发现可为高温热防护材料和大功率器件的设计、制造和建模分析提供新的途径。

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引用次数: 0

Curvature-driven topology optimization of CCFRP composites 曲率驱动的CCFRP复合材料拓扑优化

IF 9.4 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences

Pub Date : 2026-01-05 DOI: 10.1016/j.ijmecsci.2026.111202

Yubo Hou , Liang Gao , Hao Li , Zhen Luo , Wei Gao , Ying Zhou

Continuous Carbon Fiber-Reinforced Polymers (CCFRPs), fabricated via additive manufacturing, allow for the creation of more efficient lightweight structures. However, the fiber curvature induced by curved printing paths affects the mechanical properties of the material. In topology optimization, structural designs derived without considering variations in material elastic properties often result in suboptimal configurations. A novel, curvature-driven topology optimization framework is proposed to maximize structural stiffness. First, a homogenization-based Representative Volume Element (RVE) model was constructed, establishing a correlation between fiber curvature and the effective material properties. Next, a novel Curved-Path-Constrained Solid Orthotropic Material with Penalization (CPC-SOMP) method is developed by incorporating fiber orientation and curvature constraints. Finally, three-point and four-point bending experiments were designed and conducted to validate the superiority of the curvature-driven optimization approach. The MBB beam in this work exhibited a 31 % increase in peak load and a 39 % increase in maximum stiffness over that optimized by the classical SOMP method. The four-point bending beam showed improvements of 38 % in peak load and 27 % in maximum stiffness, respectively. This novel method proactively incorporates fiber curvature constraints, precisely captures real-time changes in material properties, and significantly enhances structural load-bearing capacity and bending stiffness.

通过增材制造制造的连续碳纤维增强聚合物（CCFRPs）可以创建更高效的轻质结构。然而，弯曲印刷路径引起的纤维弯曲会影响材料的力学性能。在拓扑优化中，不考虑材料弹性特性变化的结构设计往往导致次优配置。提出了一种新颖的曲率驱动拓扑优化框架，以最大限度地提高结构刚度。首先，构建了基于均质化的代表体积元（RVE）模型，建立了纤维曲率与有效材料性能之间的相关性；在此基础上，结合纤维取向和曲率约束，提出了一种弯曲路径约束固体正交各向异性惩罚材料（CPC-SOMP）方法。最后，设计并进行了三点和四点弯曲实验，验证了曲率驱动优化方法的优越性。在这项工作中，MBB梁的峰值荷载比经典SOMP方法优化的梁增加了31%，最大刚度增加了39%。四点弯曲梁的峰值荷载和最大刚度分别提高了38%和27%。这种新方法主动结合纤维曲率约束，精确捕捉材料性能的实时变化，显著提高了结构的承载能力和弯曲刚度。

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引用次数: 0

Shell vibro-acoustic control via dual-mechanism: Local resonance and nonlinear damping 基于局部共振和非线性阻尼的壳振声双机制控制

IF 9.4 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences

Pub Date : 2026-01-05 DOI: 10.1016/j.ijmecsci.2026.111188

Yibo Ke , Jianfei Yin , Ya He , Miao Yu , Dianlong Yu , Jiahao Lu , Qian Wang , Jihong Wen

This paper studies the vibro-acoustic control (VAC) of cylindrical shells using acoustic metamaterials composed of resonators incorporating nonlinear damping using particle damping technology. A cross-scale theoretical model considering macroscopic resonator dynamics and mesoscopic particle damping effects through an equivalent damping model is developed to analyze bandgap structures and vibration attenuation characteristics. Validated via finite element method and experiment, the nonlinearly damped acoustic metamaterial shell (ND-AMS) achieves a dual-mechanism VAC compared with the acoustic metamaterial shell (AMS) of equal mass. This enhanced performance arises from the dual-mechanism synergy of local resonance and nonlinear damping, where the former preserves low-frequency attenuation while the latter introduces broadband energy dissipation. The contribution of the nonlinear damping mechanism increases with both resonator vibration amplitude and the number of resonators in operation. Leveraging this mechanism, the proposed ND-AMS with a 35 % filling ratio achieves a 12.8 dB maximum vibration reduction and 19.4 dB averaged (#1-#3 microphones) sound suppression within the test range of 0.1–4 kHz. Moreover, it exhibits both enhanced suppression under high excitation levels and stable performance across different working conditions. By optimizing the number of resonators, a nonlinearly damped discrete resonator shell (ND-DRS) is proposed, which reduces the added mass ratio by 14.7 % while maintaining performance comparable to the ND-AMS. Compared to the bare shell, the ND-DRS achieves 22.5 dB vibration attenuation and 12.9 dB sound radiation suppression within the test range. Due to the stability of the materials used, the structure demonstrates potential for operation under extreme conditions. Compared to related research on AMS structures, it exhibits a clear performance advantage, offering highly valuable insights for engineering applications.

本文采用粒子阻尼技术研究了由非线性阻尼谐振腔组成的声学超材料对圆柱壳的振声控制。通过等效阻尼模型，建立了考虑宏观谐振腔动力学和介观粒子阻尼效应的跨尺度理论模型，分析了带隙结构和振动衰减特性。通过有限元法和实验验证，非线性阻尼声超材料壳（ND-AMS）与等质量声超材料壳（AMS）相比，实现了双机制的真空传递。这种增强的性能源于局部共振和非线性阻尼的双机制协同作用，其中前者保持低频衰减，而后者引入宽带能量耗散。非线性阻尼机制的贡献随谐振器振动幅值和工作谐振器数量的增加而增加。利用这一机制，在0.1-4 kHz的测试范围内，具有35%填充率的ND-AMS实现了12.8 dB的最大减振和19.4 dB的平均（#1-#3麦克风）抑声。此外，它在高激励水平下表现出增强的抑制作用，并且在不同的工作条件下表现出稳定的性能。通过优化谐振器的数量，提出了一种非线性阻尼离散谐振器壳（ND-DRS），在保持与ND-AMS相当的性能的同时，将附加质量比降低了14.7%。与裸壳相比，ND-DRS在测试范围内实现了22.5 dB的减振和12.9 dB的声辐射抑制。由于所用材料的稳定性，该结构显示出在极端条件下运行的潜力。与AMS结构的相关研究相比，它表现出明显的性能优势，为工程应用提供了非常有价值的见解。

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引用次数: 0

A dimensionless metric for quantifying fluid–structure interaction in blast-loaded plates 一种量化爆炸载荷板中流固相互作用的无量纲度量

IF 9.4 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences

Pub Date : 2026-01-05 DOI: 10.1016/j.ijmecsci.2026.111181

Giovanni Marchesi , Luca Lomazzi , Vegard Aune , Gerald Nurick , Trevor John Cloete , Andrea Manes

In blast-loading scenarios, the interaction between the structural motion and the blast load (fluid–structure interaction, FSI) can dominate the response of lightweight or flexible structures. Prior studies have clarified key mechanisms and advanced semi-analytical models, but complex configurations still require numerical simulations. In practice, quantifying FSI typically relies on comparing results from two separate modelling strategies, which is often impractical. This work proposes a pragmatic procedure to obtain inexpensive estimates of FSI effects using uncoupled simulations only. The approach builds on one-dimensional theories that include non-linear gas compressibility and inertial effects, combined with saturation analysis, and it centres on a single nondimensional index. Two complementary options are provided: Option 1 uses the reflected gas state and plate properties; Option 2 identifies characteristic times from uncoupled structural simulations. The procedure yields dimensionless estimates of the reductions in peak midpoint velocity and deflection for clamped plates. Validation covers 28 cases representing a compressed-gas shock-tube configuration established in the literature, including steel and aluminium plates over multiple thicknesses and load levels. The estimates show good agreement with high-fidelity numerical benchmarks and are robust across cases. The proposed fast-running engineering method enables rapid, objective, and operator-independent assessment of FSI effects suitable for practical use, and it supports informed selection of the appropriate numerical strategy for subsequent detailed analyses.

在爆炸加载场景下，结构运动与爆炸载荷之间的相互作用（流固耦合，FSI）可以主导轻型或柔性结构的响应。先前的研究已经明确了关键机制和先进的半解析模型，但复杂的结构仍然需要数值模拟。在实践中，量化FSI通常依赖于比较两种独立建模策略的结果，这通常是不切实际的。这项工作提出了一种实用的程序，仅使用非耦合模拟来获得FSI效应的廉价估计。该方法建立在一维理论的基础上，包括非线性气体压缩性和惯性效应，结合饱和度分析，并以单一的无维指数为中心。提供了两种互补方案：方案1使用反射气体状态和板的性质；选项2从非耦合结构模拟中确定特征时间。该程序产生无量纲估计的减少峰值中点速度和挠度为夹紧板。验证涵盖了28个案例，代表了文献中建立的压缩气体激波管配置，包括多种厚度和负载水平的钢和铝板。估计结果与高保真数值基准很好地吻合，并且在各种情况下都是稳健的。所提出的快速运行工程方法能够快速、客观、独立于操作人员的FSI效果评估，适用于实际应用，并支持为随后的详细分析选择适当的数值策略。

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引用次数: 0

Modeling and analysis of glass warpage in roll-to-plate hot embossing 玻璃卷板热压变形的建模与分析

IF 9.4 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences

Pub Date : 2026-01-05 DOI: 10.1016/j.ijmecsci.2026.111187

Zhanchen Zhu , ChiFai Cheung , Xusheng Yang , Haihui Ruan

Roll-to-plate (R2P) hot embossing has emerged as a promising approach for the high-volume manufacturing of micro-nanostructured glass optics. Warpage deformation is inevitably induced in glass due to the coupled thermal and mechanical loads, leading to degradation of its optical properties. This study develops an analytical thermo‑mechanical model to investigate glass warpage mechanisms in R2P embossing, validated through finite element method (FEM) simulations and experiments. Then, a normalized sensitivity analysis of the key process parameters shows that embossing temperature exerts the strongest influence on the warpage, followed by cooling rate, while heating rate and soaking time have minimal impacts. Finally, optimized processing conditions enable the fabrication of large-area cylindrical microstructure arrays with remarkable fidelity, achieving filling ratios exceeding 96 %, a surface roughness below 10 nm, and substantially reduced warpage deformation. This work provides both fundamental insight and practical guidelines for high‑fidelity, low‑warpage glass optics manufacturing via R2P embossing.

卷到板（R2P）热压印已成为一种有前途的方法，为大批量生产的微纳米结构玻璃光学。由于热载荷和机械载荷的耦合作用，玻璃不可避免地会产生翘曲变形，从而导致其光学性能的下降。本研究建立了一个分析热力学模型来研究R2P压印过程中的玻璃翘曲机理，并通过有限元模拟和实验进行了验证。然后，对关键工艺参数进行归一化灵敏度分析，结果表明，压花温度对翘曲的影响最大，其次是冷却速度，加热速度和浸泡时间对翘曲的影响最小。最后，优化的工艺条件使大面积圆柱形微结构阵列的制备具有显著的保真度，填充率超过96%，表面粗糙度低于10 nm，并且大大减少了翘曲变形。这项工作为通过R2P压印制造高保真、低翘曲玻璃光学提供了基本的见解和实用的指导方针。

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引用次数: 0

Energy absorption and multi-platform design in homo/hetero-chiral bilayer kresling metamaterial 同源/异手性双层Kresling超材料的能量吸收与多平台设计

IF 9.4 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences

Pub Date : 2026-01-05 DOI: 10.1016/j.ijmecsci.2026.111211

Xingchi Teng, Li Chen, Mingjin Cao, Zekun Wang, Yifan Xing

Kresling origami metamaterials exhibit unique torsional responses under compression. However, enhancing their load-bearing capacity and energy absorption remains a significant challenge without resorting to merely scaling geometric parameters. This study proposes a novel double-layer nested Kresling structure (DLKS) that demonstrates enhanced mechanical properties. Through experimental testing and finite element analysis, the deformation mechanisms and energy absorption characteristics of DLKS are investigated. Results indicate that mutual constraints formed between layers distribute loading and mitigate stress concentration. DLKS-HTC shows stronger interlayer binding forces and superior load-bearing capacity and energy absorption compared to DLKS-HC. Specifically, relative to a single-layer Kresling structure with equivalent circumcircle radius, DLKS-HTC achieves 194% higher energy absorption and 96% higher specific energy absorption. Parametric analysis reveals that increasing wall thickness significantly enhances structural performance, while optimal load-bearing and energy absorption occur at initial torsion angles between 20°–30° and height-to-radius ratios of 1.5 to 2.0. Notably, gradient-designed multilayer Kresling structures exhibit stepwise multi-stage resistance curves with tunable plateau lengths and amplitudes. DLKS enables lightweight, high-efficiency energy absorption with customizable compressive-torsional responses, showing promising applications in soft robotics, aerospace, and protective engineering.

Kresling折纸超材料在压缩下表现出独特的扭转响应。然而，提高其承载能力和能量吸收仍然是一个重大挑战，而不仅仅是缩放几何参数。本研究提出了一种新型的双层嵌套Kresling结构（DLKS），该结构具有增强的机械性能。通过实验测试和有限元分析，研究了DLKS的变形机理和吸能特性。结果表明：层与层之间形成相互约束，使荷载分布均匀，应力集中程度降低。与DLKS-HC相比，DLKS-HTC的层间结合力更强，承载能力和能量吸收能力更强。具体而言，相对于具有等效圆半径的单层Kresling结构，DLKS-HTC的能量吸收提高了194%，比能吸收提高了96%。参数分析表明，增加壁厚可以显著提高结构性能，而在初始扭转角为20°~ 30°、高径比为1.5 ~ 2.0时，结构的承载和能量吸收达到最佳。值得注意的是，梯度设计的多层Kresling结构呈现出具有可调平台长度和振幅的逐步多级电阻曲线。DLKS能够实现轻量化、高效的能量吸收，并具有可定制的压缩-扭转响应，在软机器人、航空航天和防护工程中具有广阔的应用前景。

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引用次数: 0