Thin-Walled Structures最新文献_第7页

Modeling and analysis of the high-velocity impact resistance of composite butterfly-shaped honeycomb sandwich panels with shear-stiffening material 剪切加筋材料蝴蝶形蜂窝夹芯板高速抗冲击性能建模与分析

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2026-01-10 DOI: 10.1016/j.tws.2026.114518

Guowei Sun , Xiaobing Yu , Zelin Li , Hongbo Cui , Hui Li , Xiangping Wang , Jian Xiong , Jin Zhou , Zhongwei Guan

The high-velocity impact resistance of composite butterfly-shaped honeycomb sandwich panels (CBSHSPs) with flocculated fiber-reinforced shear-stiffening material (SSM) is investigated. Originally, two finite element models of the SSM-CBSHSP structure are developed using the full modeling method (FMM) and the equivalent modeling method (EMM) based on ABAQUS software to predict the high-velocity impact behaviors, respectively. In the FMM, the damage and failure of the butterfly-shaped honeycomb core and SSM are considered by the Besant failure criterion and the Christensen failure criterion, respectively, in which the strain rate effect is taken into account. In contrast, in the EMM, the Hamiltonian equivalence theory is employed to determine the equivalent Young's modulus and Poisson's ratio of the equivalent core, and the modified Christensen failure criterion is proposed to assess its failure penetration by a high-velocity impact projectile. Furthermore, specimens of SSM-CBSHSP with unfilled SSM, filled SSM, and filled flocculated fiber-reinforced SSM are prepared. Experimental investigations with varying initial impact velocities are also performed on these specimens to validate the developed models and assess the impact resistance. Finally, the influences of critical parameters on the impact resistance of the studied structure are analyzed and discussed, yielding several practical conclusions for the manufacturing and optimization of such sandwich panels.

研究了絮凝纤维增强剪切加筋材料（SSM）复合蝴蝶形蜂窝夹层板（CBSHSPs）的高速抗冲击性能。基于ABAQUS软件，建立了SSM-CBSHSP结构的两种有限元模型，分别采用完全建模法（FMM）和等效建模法（EMM）预测高速冲击行为。在FMM模型中，考虑了应变率效应的Besant破坏准则和Christensen破坏准则分别考虑了蝴蝶形蜂窝芯和SSM的破坏和破坏。EMM采用哈密顿等效理论确定等效芯的等效杨氏模量和泊松比，并提出改进的Christensen失效准则来评估其在高速弹丸冲击下的失效侵彻。制备了未填充、填充和填充絮凝纤维增强SSM的SSM- cbshsp试样。在不同的初始冲击速度下，还对这些试样进行了实验研究，以验证所开发的模型并评估其抗冲击性。最后，对关键参数对所研究结构抗冲击性能的影响进行了分析和讨论，为这种夹层板的制造和优化提供了一些实用的结论。

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引用次数: 0

An experimental and numerical method to investigate the effect of repeated impact energy distribution on laminated composites 采用实验和数值方法研究了反复冲击能量分布对层合复合材料的影响

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2026-01-10 DOI: 10.1016/j.tws.2026.114513

Jinbo Du , Huanhuan Zhao , Peng Hao , Jialin Cui , Han Wang

Composite structures in service are susceptible to repeated low-velocity impacts, where the distribution of impact energy critically influences damage evolution. This study systematically investigates how different Impact Energy Distribution (IED) modes-under a constant total energy of 30 J-govern the failure response of carbon/epoxy laminates. Three IED scenarios were examined: 10 J × 3, 15 J × 2, and 30 J × 1. Experimental results reveal that for the same total energy, an increased number of impacts elevates peak force and maximum displacement but reduces total absorbed energy. A high-fidelity finite element model, incorporating the Puck failure criterion, was developed and validated, demonstrating excellent agreement with experiments. Crucially, the study unveils three fundamental ways in which IED mode dictates damage behavior: first, it activates certain failure mechanisms only at higher single-impact energy levels; second, it controls the propagation extent of specific damage types, such as fiber and matrix cracking, as well as delamination area; third, it alters the very morphology of damage, as evidenced by the transition of impact-surface fiber compression failure from an elongated linear band in IED₁₀/IED₁₅ to a peanut-shaped distribution in IED₃₀. These findings provide novel, mechanistic insights into cumulative damage, essential for designing composite structures against repeated impacts.

复合材料结构在服役过程中容易受到多次低速冲击，其中冲击能量的分布对损伤演化具有重要影响。本文系统地研究了在总能量为30j的恒定条件下，不同的冲击能量分布模式对碳/环氧复合材料破坏响应的影响。研究了三种简易爆炸装置场景：10 J × 3、15 J × 2和30 J × 1。实验结果表明，在总能量相同的情况下，冲击次数的增加会提高峰值力和最大位移，但会降低总吸收能量。建立了包含Puck破坏准则的高保真有限元模型，并进行了验证，与实验结果吻合良好。至关重要的是，该研究揭示了IED模式决定损伤行为的三种基本方式：首先，它仅在较高的单次撞击能量水平下激活某些破坏机制；二是控制纤维、基体开裂等特定损伤类型的扩展程度和分层面积；第三，它改变了损伤的形态，从IED10/IED15中冲击表面纤维压缩破坏的细长线性带到IED30中花生状分布的转变就可以证明这一点。这些发现为累积损伤提供了新颖的、机械的见解，对于设计复合材料结构以抵抗重复冲击至关重要。

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引用次数: 0

Seismic performance of an unequal-depth steel beam-to-CFST column joint with insert diaphragm: Experiment, numerical analysis and design method 带插入隔板的不等深钢梁-钢管混凝土柱节点的抗震性能：试验、数值分析和设计方法

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2026-01-09 DOI: 10.1016/j.tws.2026.114508

Jialiang Jin , Wei Wang , Weifeng Jiao , Min Sun , Huijie Xu , Chenyue Tian

For unequal-depth steel beam-to-CFST (UDSB-to-CFST) column joints commonly encountered in practical engineering, this study proposes an assembled joint configuration incorporating insert diaphragms. The insert diaphragms are welded to the slotted boundary column during factory prefabrication, after which the joint can be assembled on-site using bolted connections to the steel beam, eliminating field welding and ensuring improved constructability. A large-scale quasi-static cyclic test was conducted to evaluate the seismic performance of the proposed joint. The test results demonstrated that the joint exhibited favorable ductility, excellent plastic deformation capacity, and satisfactory energy dissipation. A refined finite element (FE) model was developed and validated against the test results. Parametric analyses were then carried out to investigate the effects of beam depth ratio, beam width ratio, column width-to-thickness ratio, diaphragm geometry, and axial load ratio. The results revealed that the beam depth ratio and column dimensions predominantly govern panel-zone shear strength and deformation capacity. Based on the observed mechanisms, mechanics-based formulas for the panel-zone shear strength were derived by combining the contributions of the column web and confined concrete and verified against FE results. Simplified expressions for the yield and ultimate strengths of the beam end insert diaphragm were also developed, considering potential weld failure. Comparisons with experimental and numerical results verify the good prediction accuracy of the proposed formulas, offering practical guidance for the seismic design of prefabricated UDSB-to-CFST joints.

对于实际工程中经常遇到的不等深钢梁- cfst （udsdb - cfst）柱节点，本研究提出了包含插入隔板的组合节点配置。插入式隔膜在工厂预制时焊接到开槽边界柱上，然后通过螺栓连接到钢梁上进行现场组装，消除了现场焊接，提高了施工性。通过大型拟静力循环试验对节理的抗震性能进行了评价。试验结果表明，该节点具有良好的延性、良好的塑性变形能力和良好的消能性能。建立了精细化有限元模型，并对试验结果进行了验证。然后进行了参数分析，研究了梁深比、梁宽比、柱宽厚比、隔膜几何形状和轴向载荷比的影响。结果表明，梁深比和柱尺寸对板区抗剪强度和变形能力影响较大。在此基础上，结合柱腹板和约束混凝土的作用，导出了基于力学的板区抗剪强度计算公式，并与有限元结果进行了验证。考虑潜在的焊接破坏，建立了梁端插入膜片屈服强度和极限强度的简化表达式。通过与试验和数值结果的比较，验证了所提公式具有较好的预测精度，为装配式udb - cfst节点抗震设计提供了实践指导。

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引用次数: 0

An efficient semi-analytical approach for postbuckling analysis of laminated composite plates with straight edges 直边复合材料层合板后屈曲分析的一种有效半解析方法

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2026-01-09 DOI: 10.1016/j.tws.2025.114394

Mohamed H. Elalfy, Roeland De Breuker, Saullo G.P. Castro

Postbuckling in thin-walled aircraft structures can lead to a redistribution of loads while the structure continues to carry load. This behaviour is particularly important in stiffened panels, where local buckling does not necessarily imply failure. Accurately modelling this behaviour is essential, but the analysis is often computationally expensive. A computationally efficient methodology is developed to predict postbuckling behaviour, supporting preliminary design and multidisciplinary optimization of aerospace structures. The formulation is based on the Rayleigh–Ritz method using hierarchical polynomials as shape functions. These polynomials enable closed-form integration of the energy functional and allow the application of various boundary conditions. Two solution schemes are implemented: a perturbation-based expansion and an iterative correction method based on the Normal Flow Algorithm. The solutions are verified against results from the literature and finite element simulations. Results show that the methodology accurately predicts postbuckling behaviour while substantially reducing computational cost. The efficiency and flexibility in modelling different boundary conditions make the approach well-suited for integration into structural design and optimization frameworks that require repeated postbuckling evaluations.

薄壁飞机结构的后屈曲会在结构继续承载载荷的同时导致载荷的重新分配。这种行为在加筋板中尤为重要，在加筋板中，局部屈曲不一定意味着失效。准确地模拟这种行为是必要的，但分析通常是计算昂贵的。开发了一种计算效率高的方法来预测后屈曲行为，支持航空航天结构的初步设计和多学科优化。该公式基于瑞利-里兹方法，使用层次多项式作为形状函数。这些多项式使能量泛函的封闭积分成为可能，并允许应用各种边界条件。实现了两种求解方案：基于微扰展开法和基于法向流算法的迭代修正法。并与文献和有限元模拟结果进行了对比验证。结果表明，该方法可以准确预测后屈曲行为，同时大大降低了计算成本。不同边界条件建模的效率和灵活性使得该方法非常适合集成到需要重复屈曲后评估的结构设计和优化框架中。

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引用次数: 0

A hybrid beam–shell iFEM model for structural monitoring of thin-walled structures subjected to thermo-elastic loading 热弹性荷载作用下薄壁结构监测的梁-壳混合有限元模型

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2026-01-09 DOI: 10.1016/j.tws.2026.114502

Ming-Jyun Dai, Chu-Mou Hsiao

The primary advantage of the inverse finite element method (iFEM) lies in its ability to reconstruct structural responses from measured strain data without relying on traction boundary conditions. In this study, an iFEM-based approach is proposed for structural monitoring of thin-walled structures under thermo-elastic loading. This topic has received limited attention in the iFEM literature. Moreover, the beam–shell coupling technique is employed to reduce the number of discrete elements required for modeling stiffeners, thereby improving computational efficiency. A series of benchmark problems and advanced numerical examples involving thin-walled structures under thermo-elastic loading is investigated using the full–shell and beam–shell iFEM models. According to the comparisons, the beam–shell model is capable of reliably reconstructing structural deformations and stresses, with maximum displacement and stress errors over all numerical examples being 6.37% and 10.65%, respectively, while requiring less computational time than the full–shell model. It is demonstrated that the proposed iFEM models can achieve reliable structural monitoring under thermo-elastic loading.

逆有限元法（iFEM）的主要优点在于它能够从实测应变数据中重建结构响应，而不依赖于牵引边界条件。本文提出了一种基于有限元法的薄壁结构热弹性载荷监测方法。这一专题在妇发基金文献中得到的注意有限。此外，采用梁-壳耦合技术减少了加劲肋建模所需的离散单元数量，从而提高了计算效率。采用全壳和梁-壳有限元模型研究了薄壁结构在热弹性载荷作用下的一系列基准问题和高级数值算例。结果表明，梁-壳模型能够可靠地重建结构变形和应力，所有数值算例的最大位移和应力误差分别为6.37%和10.65%，且计算时间比全壳模型少。结果表明，所提出的有限元模型能够实现热弹性载荷下结构的可靠监测。

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引用次数: 0

Geometric nonlinear deformation analysis for heterogeneous solar sail membrane with creases under solar radiation pressure 太阳辐射压力下带折痕的非均质太阳帆膜几何非线性变形分析

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2026-01-09 DOI: 10.1016/j.tws.2026.114504

Tianyi Ma, Dongxu Li, Jie Wang

Accurate thrust estimation is critical for the orbital design of solar sail spacecraft, as its precision governs errors in orbital parameter evolution. However, significant deviations exist between the actual thrust generated by solar radiation pressure (SRP) and ideal theoretical values due to multiple non-ideal factors, including sail deformation, structural heterogeneity, crease defects, inertial effects, and non-ideal reflection. To address these deviations, this study proposes a thrust characterization method that integrates coupled non-ideal factors. First, a parametric equivalent method is proposed to characterize the structural heterogeneity of sail membranes. Then, a geometric nonlinear finite element method (FEM) is developed to analyze deformation behavior of heterogeneous membranes, where crease defects are introduced via plane strain beam theory. Furthermore, inertia effects from the hub body are incorporated into the deformation analysis model, which enhances predictive accuracy. Ultimately, a comprehensive thrust model is established for solar sail with non-flat surfaces and non-perfect optical coefficients. Through numerical simulations, we evaluate effects of key variables on deformation and thrust generation in a hexagonal heterogeneous solar sail membrane with creases. The findings establish a theoretical foundation for the orbital and attitude design of solar sail missions.

准确的推力估计是太阳帆航天器轨道设计的关键，其精度决定着轨道参数演化的误差。然而，由于风帆变形、结构非均质性、折痕缺陷、惯性效应、非理想反射等多种非理想因素的影响，实际太阳辐射压力（SRP）推力与理想理论值存在较大偏差。为了解决这些偏差，本研究提出了一种集成耦合非理想因素的推力表征方法。首先，提出了表征帆膜结构非均质性的参数等效方法。然后，利用平面应变梁理论引入折痕缺陷，建立了几何非线性有限元方法来分析非均质膜的变形行为。此外，在变形分析模型中考虑了轮毂体的惯性效应，提高了预测精度。最后，建立了非平面非完美光学系数太阳帆的综合推力模型。通过数值模拟，研究了带折痕的六角形非均质太阳帆膜变形和推力产生的影响。研究结果为太阳帆任务的轨道和姿态设计奠定了理论基础。

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引用次数: 0

Experimental investigation of 6061-T6 aluminium alloy CHS stub columns under transient fire conditions considering intumescent coatings 考虑膨胀涂层的6061-T6铝合金CHS短柱瞬态火灾试验研究

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2026-01-08 DOI: 10.1016/j.tws.2026.114507

Zhongxing Wang , Yifan Wang , Lele Zhan , Shijia He , Boshan Chen

This study investigated the local buckling behaviour of aluminium alloy circular hollow section (CHS) stub columns under transient fire conditions, with a particular focus on the effects of intumescent coating. A total of 18 experimental tests were conducted, including four tests at room temperature, eight under high-temperature transient conditions without fire protection, and six under similar conditions with intumescent coating. Prior to the stub column tests, the material properties of the 6061-T6 aluminium alloy at room temperature were obtained through the tensile coupon tests, and the initial geometric imperfections of the stub columns were measured using a 3D laser scanner. The load-end shortening behaviour, failure modes, critical temperatures, and the effectiveness of intumescent coatings were investigated in this study. The test results revealed a distinct contrast in failure modes: under ambient conditions, all stub column specimens exhibited elephant-foot-type local buckling at the ends, whereas under unprotected, high-temperature transient conditions, local buckling occurred at mid-height. Based on the experimental results, the applicability and accuracy of Chinese Code (T/CECS 756–2020) and European Standard (EN 1999–1–1) (2007) were evaluated, and the results revealed that existing design provisions underestimate the load-bearing capacity of such aluminium alloy stub columns at elevated temperatures. To address this, a preliminary empirical formula based on modified European Standard (EN1993–1–2) (2005) was developed for accurately determining the critical temperature of aluminium alloy stub columns under fire conditions.

本文研究了铝合金圆空心截面（CHS）短柱在瞬态火灾条件下的局部屈曲行为，特别关注了膨胀涂层的影响。共进行了18次试验试验，其中常温试验4次，无防火高温瞬态试验8次，有膨胀涂层的相似工况试验6次。在短柱试验之前，通过拉伸试验获得了6061-T6铝合金在室温下的材料性能，并利用三维激光扫描仪测量了短柱的初始几何缺陷。本研究对膨胀涂层的载荷端缩短行为、失效模式、临界温度和有效性进行了研究。试验结果揭示了破坏模式的鲜明对比：在环境条件下，所有短柱试件在末端表现出象脚型局部屈曲，而在无保护的高温瞬态条件下，局部屈曲发生在中高度。基于试验结果，对中国规范（T/CECS 756-2020）和欧洲标准（EN 1999-1-1）（2007）的适用性和准确性进行了评价，结果表明，现有设计规定低估了此类铝合金短柱在高温下的承载能力。为了解决这个问题，根据修改后的欧洲标准（EN1993-1-2）（2005），开发了一个初步的经验公式，用于准确确定铝合金短柱在火灾条件下的临界温度。

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引用次数: 0

Stability criterion and parameter coupling effects of unilateral impact vibration in cantilevered fluid-conveying pipes 悬臂输液管道单边冲击振动稳定性判据及参数耦合效应

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2026-01-08 DOI: 10.1016/j.tws.2026.114498

Tianlin Wang , Feng Xu , Changqing Guo , He Liu

In complex engineering environments such as marine engineering, mechanical and chemical engineering, and nuclear industry, the fluid-conveying pipe in service may experience parameter coupling impact vibration phenomena direct or spaced base excitation from earthquakes and waves. The strong nonlinear behavior significantly compromises the vibrational stability and operational safety/reliability of pipe systems. Therefore, a dynamic model for analyzing the impact vibration of unilaterally constrained cantilevered fluid-conveying pipes is established under base excitation by utilizing tension-compression anisotropic springs and the Euler-Bernoulli beam theory. Firstly, a novel amplitude stability criterion applicable to evaluating the nonlinear stability of cantilevered fluid-conveying pipes is proposed. Secondly, the results obtained by the new method were compared with experimental results, the simulation results of the high-stiffness spring system, and modal energy analysis, which verified the effectiveness of the amplitude stability criterion. Finally, the impact vibration stability of unilaterally constrained cantilevered pipes under parameter coupling effects is systematically investigated based on amplitude stability criterion and shows that co-existence region of flutter instability and divergence instability may appear and can be influenced by different parameters; the location of constraint can also greatly affect the critical flow velocity.

在海洋工程、机械化工、核工业等复杂的工程环境中，在役的流体输送管道在地震和波浪的直接或间隔基激励下，可能会出现参数耦合冲击振动现象。这种强烈的非线性行为严重影响了管道系统的振动稳定性和运行安全可靠性。因此，利用拉-压缩各向异性弹簧和欧拉-伯努利梁理论，建立了基础激励下单边约束悬臂式输液管道冲击振动的动力学模型。首先，提出了一种适用于评价悬挑输液管道非线性稳定性的幅值稳定判据。其次，将新方法得到的结果与实验结果、高刚度弹簧系统的仿真结果以及模态能量分析进行了比较，验证了幅值稳定判据的有效性。最后，基于幅值稳定判据系统地研究了参数耦合作用下单边约束悬臂管的冲击振动稳定性，结果表明，颤振失稳与发散失稳共存区域可能出现，且受不同参数的影响；约束的位置对临界流速也有很大的影响。

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引用次数: 0

Defect-state acoustic metamaterial based on Helmholtz-Trampoline synergy for low-frequency acoustic energy harvesting 基于Helmholtz-Trampoline协同的低频声能收集缺陷态声学超材料

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2026-01-08 DOI: 10.1016/j.tws.2026.114505

Chuan He, Shihao Tang, Feifei Feng, Lei Diao, Meng Tao

Acoustic energy harvesting offers a promising pathway towards self-powering microelectronic devices, yet current solutions are inherently limited by low power output and restricted operational bandwidth. To overcome these limitations, we introduce a point-defect acoustic metamaterial architecture that synergistically integrates a spiral-neck Helmholtz resonance (HR) with the trampoline effect. The core innovations involve incorporating a spiral neck design within the HR to extend the acoustic path, substantially lowering the resonant frequency for efficient low-frequency acoustic energy capture. Additionally, strategically patterned perforations are introduced in the aluminum substrate surrounding the piezoelectric element to induce a trampoline effect, significantly enhancing substrate compliance and thereby boosting resonance response and energy harvesting efficiency. Finite element method simulations demonstrate that the proposed structure achieves high peak power outputs and voltages at both localized and structural resonance frequencies, yielding superior power densities compared to conventional designs. Parametric studies confirm that the perforations substantially enhance acoustic energy harvesting efficiency. The structure exhibits exceptional environmental robustness, maintaining high performance across a wide range of incident sound pressures. Comparative analysis reveals significant advantages over state-of-the-art designs in output power, voltage, and power density. Experimental validation of transmission loss and acoustic energy harvesting performance shows excellent agreement with simulations, confirming the design efficacy. This metamaterial offers an efficient and sustainable powering strategy for microelectronic devices like sensors and monitors.

声学能量收集为自供电微电子设备提供了一条很有前途的途径，但目前的解决方案本身就受到低功率输出和有限的操作带宽的限制。为了克服这些限制，我们引入了一种点缺陷声学超材料结构，该结构将螺旋颈亥姆霍兹共振（HR）与蹦床效应协同集成。核心创新包括在HR内整合螺旋颈设计，以延长声路径，大大降低谐振频率，从而有效地捕获低频声能。此外，在压电元件周围的铝衬底上引入有策略图案的穿孔，以诱导蹦床效应，显著增强衬底顺应性，从而提高共振响应和能量收集效率。有限元模拟表明，该结构在局部共振频率和结构共振频率下均可实现峰值功率输出和电压，与传统设计相比，具有优越的功率密度。参数研究证实，射孔大大提高了声能收集效率。该结构表现出优异的环境稳健性，在大范围的入射声压下保持高性能。对比分析揭示了在输出功率、电压和功率密度方面优于最先进设计的显著优势。传输损耗和声能量收集性能的实验验证与仿真结果吻合良好，验证了设计的有效性。这种超材料为传感器和监视器等微电子设备提供了一种高效和可持续的供电策略。

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引用次数: 0

A comprehensive review of lattice structures: From design to energy absorption 晶格结构的全面回顾：从设计到能量吸收

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures

Pub Date : 2026-01-08 DOI: 10.1016/j.tws.2026.114478

Rafael Augusto Gomes , Ibrahim Umar Musa , Marilia Sonego , Guilherme Ferreira Gomes

Lattice structures have garnered significant attention in the field of crashworthiness due to their exceptional combination of low weight and superior energy absorption capabilities, where it can be critical for enhancing safety in automotive, aerospace, and protective systems. This review present findings from over recent studies, providing an integrated perspective on the design, numerical analysis, optimization, and additive manufacturing of lattice architectures developed for quasi-static, impact and dynamic loading conditions. The classification of lattice types were defined into 2D, 3D, and bioinspired geometries, where the bioinspired structures have been growing prominence of nature-inspired designs. Numerical modeling techniques, particularly using explicit finite element analysis, have proven essential for accurately predicting structural responses, also enabling optimization approaches that simultaneously maximize specific energy absorption (SEA) and minimize peak crushing forces (PCF). The additive manufacturing remains the most versatile fabrication method, facilitating complex lattice geometries. A extensive data set composed with numerical and experimental validation was presented where it confirms that topology, material choice, and density are key determinants of crashworthiness efficacy. Trends indicate a rising integration of multi-scale hierarchical and functionally graded lattices, which further enhance energy absorption and structural strength. Finally, this review proposes a methodology using a roadmap to help the engineers and researchers to develop a lattice structure from crashworthiness, bridging conceptual design to experimental validation, to accelerate the development of next-generation, lightweight energy absorbing systems tailored for real world crashworthiness applications.

格子结构在耐撞性领域引起了极大的关注，因为它具有低重量和卓越的能量吸收能力，对于提高汽车、航空航天和保护系统的安全性至关重要。本文综述了最近的研究成果，为准静态、冲击和动态加载条件下的晶格结构的设计、数值分析、优化和增材制造提供了一个综合的视角。晶格类型的分类被定义为2D， 3D和生物启发几何，其中生物启发结构在自然启发设计中日益突出。数值模拟技术，特别是使用显式有限元分析，已被证明是准确预测结构响应的关键，也可以实现优化方法，同时最大化比能吸收（SEA）和最小化峰值破碎力（PCF）。增材制造仍然是最通用的制造方法，可以实现复杂的晶格几何形状。由数值和实验验证组成的广泛数据集证实，拓扑结构、材料选择和密度是耐撞性能的关键决定因素。趋势表明，多尺度分层格和功能梯度格的融合程度不断提高，进一步增强了能量吸收和结构强度。最后，本文提出了一种使用路线图的方法，以帮助工程师和研究人员开发从耐撞性的晶格结构，将概念设计与实验验证连接起来，以加速为现实世界耐撞应用量身定制的下一代轻质吸能系统的开发。

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引用次数: 0