Article(id=1228282197933753129, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1228282191159952029, articleNumber=null, orderNo=null, doi=10.16579/j.issn.1001.9669.2025.10.014, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1743523200000, receivedDateStr=2025-04-02, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1770774896366, onlineDateStr=2026-02-11, pubDate=1760457600000, pubDateStr=2025-10-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770774896366, onlineIssueDateStr=2026-02-11, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770774896366, creator=13701087609, updateTime=1770774896366, updator=13701087609, issue=Issue{id=1228282191159952029, tenantId=1146029695717560320, journalId=1227999626482147330, year='2025', volume='47', issue='10', pageStart='1', pageEnd='157', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1770774894751, creator=13701087609, updateTime=1770775890381, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228286367227118244, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1228282191159952029, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228286367227118245, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1228282191159952029, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=124, endPage=130, ext={EN=ArticleExt(id=1228282198273491767, articleId=1228282197933753129, tenantId=1146029695717560320, journalId=1227999626482147330, language=EN, title=Study on energy absorption characteristics of biomimetic fractal sandwich plate core structure, columnId=1228282192162390694, journalTitle=Journal of Mechanical Strength, columnName=Experimental Research·Testing Technology, runingTitle=null, highlight=null, articleAbstract=
To enhance the energy absorption efficiency of conventional sandwich panels, a biomimetic tree-like fractal core (BTLFC) inspired by the dendritic fractal structure of the royal lotus leaf vein was designed. Firstly, quasi-static compression tests revealed that the 2-order BTLFC exhibited a specific energy absorption 5.69% higher and an average load 4.46% greater than traditional honeycomb cores. Secondly, a finite element numerical model of the BTLFC was established;combined with quasi-static compression test data, the finite element model error was within 2.2%, demonstrating high accuracy of the model. Finally, Latin hypercube test design, Kriging surrogate model, and the non-dominated sorting genetic algorithm-II (NSGA-II) were employed to perform multi-objective optimization on the structural parameter combinations of the BTLFC (size ratio r, bifurcation angle θ, fractal order D). The optimized BTLFC structure exhibited superior comprehensive performance, with specific energy absorption increased by 10.19%, peak crushing force reduced by 12.27%,and mass decreased by 11.79% compared to traditional honeycomb cores. The findings provide novel biomimetic design insights for developing high-performance energy absorption structures.
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为提高传统夹芯板的能量吸收效率,受王莲叶脉树状分形结构启发,设计了一种仿生树状分形夹芯板芯体(Biomimetic Tree-Like Fractal Core, BTLFC)。首先,通过准静态压缩试验,发现二阶BTLFC的比吸能较传统蜂窝芯体提升了5.69%,平均压溃力提升了4.46%。其次,建立了BTLFC的有限元数值模型,结合准静态压缩试验数据,表明有限元模型误差在2.2%以内,证明了有限元模型具有较高的准确性。最后,采用拉丁超立方试验设计、Kriging代理模型及第二代非支配排序遗传算法(Non-dominated Sorting Genetic Algorithm-Ⅱ, NSGA-Ⅱ)对BTLFC的结构参数组合(尺寸比r、分叉角度θ、分形阶数D)进行了多目标优化设计。优化后BTLFC的最优结构展现了更优异的综合性能,其比吸能较传统蜂窝芯体提升了10.19%,峰值压溃力降低了12.27%,质量减小了11.79%。研究结果可为开发高性能能量吸收结构提供新的仿生设计思路。
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于地,男,1989年生,吉林长春人,硕士,实验师;主要研究方向为机械电子工程;E-mail:292287091@qq.com。
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于地,男,1989年生,吉林长春人,硕士,实验师;主要研究方向为机械电子工程;E-mail:292287091@qq.com。
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Bionic prototype (the royal lotus leaf vein), figureFileSmall=05YQoB0xyLHSqLzUz14e/A==, figureFileBig=BIzEKkhL84vBlVZBbAjLJg==, tableContent=null), ArticleFig(id=1228282206825677007, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=图1, caption=
仿生原型(王莲叶脉), figureFileSmall=05YQoB0xyLHSqLzUz14e/A==, figureFileBig=BIzEKkhL84vBlVZBbAjLJg==, tableContent=null), ArticleFig(id=1228282207102501084, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Fig.2, caption=
Evolution process of tree-like fractal structure, figureFileSmall=UWJn7kP+kMwoueoA7E1PXw==, figureFileBig=bi/g4jS8F+E9hhwv9BjvaA==, tableContent=null), ArticleFig(id=1228282207182192863, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=图2, caption=
树状分形结构的演化过程, figureFileSmall=UWJn7kP+kMwoueoA7E1PXw==, figureFileBig=bi/g4jS8F+E9hhwv9BjvaA==, tableContent=null), ArticleFig(id=1228282207261884647, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Fig.3, caption=
Bionic core cell and its cross-section graphics, figureFileSmall=vX7I5Wk5oFggC94QQdfKgQ==, figureFileBig=PldxAY/D6D8XPBu6k5npdA==, tableContent=null), ArticleFig(id=1228282208662782199, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=图3, caption=
仿生芯体单个胞元及其截面图形, figureFileSmall=vX7I5Wk5oFggC94QQdfKgQ==, figureFileBig=PldxAY/D6D8XPBu6k5npdA==, tableContent=null), ArticleFig(id=1228282208780222719, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Fig.4, caption=
3D printed honeycomb core and bionic core (nylon PA12), figureFileSmall=sE6vRFckzsPPuFaCzLqk2w==, figureFileBig=5zYCImHWVhd3FVQSC8QnIg==, tableContent=null), ArticleFig(id=1228282208897663238, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=图4, caption=
3D打印蜂窝芯体和仿生芯体(尼龙PA12), figureFileSmall=sE6vRFckzsPPuFaCzLqk2w==, figureFileBig=5zYCImHWVhd3FVQSC8QnIg==, tableContent=null), ArticleFig(id=1228282208998326541, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Fig.5, caption=
Finite element model of the sandwich plate core, figureFileSmall=DCj/7+u8MjKwAnA8a+rjuw==, figureFileBig=+GDrRCabnXhdAmgJcNCfOQ==, tableContent=null), ArticleFig(id=1228282209098989845, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=图5, caption=
夹芯板芯体的有限元模型, figureFileSmall=DCj/7+u8MjKwAnA8a+rjuw==, figureFileBig=+GDrRCabnXhdAmgJcNCfOQ==, tableContent=null), ArticleFig(id=1228282209199653143, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Fig.6, caption=
Quasi-static compression test, figureFileSmall=+3r4iaNa/YF0Yi8JGBTizA==, figureFileBig=tLDxa6ARQJROn3XshXS+VA==, tableContent=null), ArticleFig(id=1228282209291927839, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=图6, caption=
准静态压缩试验, figureFileSmall=+3r4iaNa/YF0Yi8JGBTizA==, figureFileBig=tLDxa6ARQJROn3XshXS+VA==, tableContent=null), ArticleFig(id=1228282209375813923, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Fig.7, caption=
Loading-displacement curves of the bionic core BTLFC and the honeycomb core panel, figureFileSmall=TGZNPwKEV0zvXfh11omVgA==, figureFileBig=D97to85Xc2OKvAhR8UFoRA==, tableContent=null), ArticleFig(id=1228282209493254442, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=图7, caption=
仿生芯体(BTLFC)与蜂窝芯体(HCP)的载荷-位移曲线, figureFileSmall=TGZNPwKEV0zvXfh11omVgA==, figureFileBig=D97to85Xc2OKvAhR8UFoRA==, tableContent=null), ArticleFig(id=1228282209585529136, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Fig.8, caption=
Comparison of energy absorption index of cores, figureFileSmall=QQmHoAetjIgkafyRDbNOow==, figureFileBig=rjvS4ZZe0RJPe1bTxHE8UQ==, tableContent=null), ArticleFig(id=1228282209707163958, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=图8, caption=
芯体吸能指标的对比, figureFileSmall=QQmHoAetjIgkafyRDbNOow==, figureFileBig=rjvS4ZZe0RJPe1bTxHE8UQ==, tableContent=null), ArticleFig(id=1228282209803632956, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Fig.9, caption=
Stress-strain curves of nylon PA12, figureFileSmall=4Hbp6UVZpcLmkbT2z7SjVA==, figureFileBig=GxFMcbJaOteA+zTX5TYUsA==, tableContent=null), ArticleFig(id=1228282209904296255, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=图9, caption=
尼龙PA12的应力-应变曲线, figureFileSmall=4Hbp6UVZpcLmkbT2z7SjVA==, figureFileBig=GxFMcbJaOteA+zTX5TYUsA==, tableContent=null), ArticleFig(id=1228282209988182343, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Fig.10, caption=
Comparison of loading-displacement curves between test and simulation, figureFileSmall=ZWCJb9NU6HTXANtYe2CsuA==, figureFileBig=oy3ClAgmSrWpmfGywqX1iQ==, tableContent=null), ArticleFig(id=1228282210097234252, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=图10, caption=
试验与仿真载荷-位移曲线的对比, figureFileSmall=ZWCJb9NU6HTXANtYe2CsuA==, figureFileBig=oy3ClAgmSrWpmfGywqX1iQ==, tableContent=null), ArticleFig(id=1228282210202091856, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Fig.11, caption=
Pareto frontier solution set of the bionic core, figureFileSmall=EAIL+TSbIJeOxF4CSPDWVw==, figureFileBig=iYhvQMpFoiytZ2qZdxKPmQ==, tableContent=null), ArticleFig(id=1228282210260812118, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=图11, caption=
仿生芯体的Pareto前沿解集, figureFileSmall=EAIL+TSbIJeOxF4CSPDWVw==, figureFileBig=iYhvQMpFoiytZ2qZdxKPmQ==, tableContent=null), ArticleFig(id=1228282210365669722, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Tab.1, caption=
Thickness and mass of the core sample
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| 类型Type | 壁厚Thickness t/mm | 质量Mass m/g |
|---|
| BTLFC1-60-1 | 1.22 | 70.05 |
| BTLFC1-60-2 | 0.94 | 69.66 |
| HCP | 1.70 | 70.48 |
), ArticleFig(id=1228282210441167200, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=表1, caption=
芯体试样的壁厚及质量
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| 类型Type | 壁厚Thickness t/mm | 质量Mass m/g |
|---|
| BTLFC1-60-1 | 1.22 | 70.05 |
| BTLFC1-60-2 | 0.94 | 69.66 |
| HCP | 1.70 | 70.48 |
), ArticleFig(id=1228282210525053286, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Tab.2, caption=
Comparison of energy absorption indexes between test and simulation
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吸能指标 Energy absorption index | BTLFC1-60-1 (0~3 mm) | BTLFC1-60-2 (0~3 mm) |
|---|
试验 Test | 仿真 Simulation | 误差 Error/% | 试验 Test | 仿真 Simulation | 误差 Error/% |
|---|
| EA/J | 333.32 | 328.46 | -1.46 | 336.01 | 343.15 | 2.13 |
| PCF/kN | 152.59 | 155.06 | 1.62 | 161.34 | 161.91 | 0.35 |
| SEA/(J/g) | 4.76 | 4.69 | -1.47 | 4.80 | 4.90 | 2.08 |
| MCF/kN | 111.10 | 109.49 | -1.45 | 112.01 | 114.38 | 2.12 |
), ArticleFig(id=1228282210613133678, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=表2, caption=
试验与仿真的吸能指标对比
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吸能指标 Energy absorption index | BTLFC1-60-1 (0~3 mm) | BTLFC1-60-2 (0~3 mm) |
|---|
试验 Test | 仿真 Simulation | 误差 Error/% | 试验 Test | 仿真 Simulation | 误差 Error/% |
|---|
| EA/J | 333.32 | 328.46 | -1.46 | 336.01 | 343.15 | 2.13 |
| PCF/kN | 152.59 | 155.06 | 1.62 | 161.34 | 161.91 | 0.35 |
| SEA/(J/g) | 4.76 | 4.69 | -1.47 | 4.80 | 4.90 | 2.08 |
| MCF/kN | 111.10 | 109.49 | -1.45 | 112.01 | 114.38 | 2.12 |
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Error between the predicted value and the actual value of the Kriging surrogate model
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| 结构参数Structural parameter | 比吸能SEA | 峰值压溃力PCF |
|---|
尺寸比 Size ratio r | 分叉角度 Bifurcation angle θ/(°) | 分形阶数 Fractal order D | 预测值 Predicted value/(J/g) | 实际值 Actual value/(J/g) | 误差 Error/% | 预测值 Predicted value/kN | 实际值 Actual value/kN | 误差 Error/% |
|---|
| 0.65 | 90 | 1 | 4.310 | 4.272 | 0.892 | 106.61 | 106.38 | 0.224 |
| 0.75 | 72 | 2 | 4.624 | 4.627 | -0.084 | 117.12 | 118.16 | -0.881 |
| 0.85 | 60 | 1 | 4.344 | 4.386 | -0.960 | 111.56 | 112.59 | -0.918 |
| 0.95 | 45 | 2 | 4.652 | 4.596 | 1.214 | 166.89 | 167.72 | -0.495 |
| 1 | 30 | 1 | 3.895 | 3.885 | 0.268 | 145.52 | 145.57 | -0.036 |
), ArticleFig(id=1228282210759934325, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=表3, caption=
Kriging代理模型预测值与实际值的误差
, figureFileSmall=null, figureFileBig=null, tableContent=
| 结构参数Structural parameter | 比吸能SEA | 峰值压溃力PCF |
|---|
尺寸比 Size ratio r | 分叉角度 Bifurcation angle θ/(°) | 分形阶数 Fractal order D | 预测值 Predicted value/(J/g) | 实际值 Actual value/(J/g) | 误差 Error/% | 预测值 Predicted value/kN | 实际值 Actual value/kN | 误差 Error/% |
|---|
| 0.65 | 90 | 1 | 4.310 | 4.272 | 0.892 | 106.61 | 106.38 | 0.224 |
| 0.75 | 72 | 2 | 4.624 | 4.627 | -0.084 | 117.12 | 118.16 | -0.881 |
| 0.85 | 60 | 1 | 4.344 | 4.386 | -0.960 | 111.56 | 112.59 | -0.918 |
| 0.95 | 45 | 2 | 4.652 | 4.596 | 1.214 | 166.89 | 167.72 | -0.495 |
| 1 | 30 | 1 | 3.895 | 3.885 | 0.268 | 145.52 | 145.57 | -0.036 |
), ArticleFig(id=1228282210839626105, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=EN, label=Tab.4, caption=
Predicted value and actual value of the optimal solution
, figureFileSmall=null, figureFileBig=null, tableContent=
尺寸比 Size ratio r | 分叉角度 Bifurcation angle θ/(°) | 分形阶数 Fractal order D | 质量 Mass m/g | 比吸能SEA | 峰值压溃力PCF |
|---|
预测值 Predicted value/(J/g) | 实际值 Actual value/(J/g) | 误差 Error/% | 预测值 Predicted value/kN | 实际值 Actual value/kN | 误差 Error/% |
|---|
| 0.6 | 90 | 2 | 61.75 | 5.100 | 5.081 | 0.37 | 135.26 | 136.04 | 0.57 |
), ArticleFig(id=1228282210915123584, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282197933753129, language=CN, label=表4, caption=
最优解的预测值与实际值
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尺寸比 Size ratio r | 分叉角度 Bifurcation angle θ/(°) | 分形阶数 Fractal order D | 质量 Mass m/g | 比吸能SEA | 峰值压溃力PCF |
|---|
预测值 Predicted value/(J/g) | 实际值 Actual value/(J/g) | 误差 Error/% | 预测值 Predicted value/kN | 实际值 Actual value/kN | 误差 Error/% |
|---|
| 0.6 | 90 | 2 | 61.75 | 5.100 | 5.081 | 0.37 | 135.26 | 136.04 | 0.57 |
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