Development of Energy Absorbing Light-Weight Honeycomb Cell Structure by Crushing and Fracture

通过破碎和断裂开发吸能轻质蜂窝单元结构

• 批准号: 14350053
• 负责人: YAMAZAKI Koetsu
• 金额: $ 9.54万
• 依托单位: Kanazawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14350053/
• 关键词: Crushing Energy Absorption; Light Weight Cell Structure; Crack Initiation; Crack Growth and Penetration; Honeycomb Cell Structure; Structural Optimization

This research has been done to develop honeycomb cell structures which have high absorbing capability of impact energy by crushing and fracturing of cells. The obtained results are summarized as follows :(1)Breaking and penetration prediction of projectile : When a cone projectile with sharp edge penetrates a thin aluminum film, it has been found that cracking and penetrating phenomena can be predicted by the criterion of limit equivalent breaking strain in the penetration simulation. The phenomena have also been confirmed by the experiments.(2)Crushing phenomena prediction : The energy absorbing phenomena of honeycomb cell structures have been simulated by the explicit dynamic finite element method, and the simulated results of absorbing energy as well as folding phenomena have been compared with that of crushing experiment of aluminum cell structures.(3)Absorbing capability of honeycomb cell structure with sheet : Honeycomb cell structures with thin sheets has been fabricated and tested by the experiments. It has been found that there is much effect for energy absorption when the crushing of honeycomb cell structures accompany the sheet fracture by the projectile. The energy absorbing effects have also been predicted by the crushing and braking simulation of FEM.

本研究的目的是开发出具有高冲击能量吸收能力的蜂窝单元结构。（1）弹丸的破断和侵彻预测：在侵彻模拟中，发现用极限等效破断应变准则可以预测尖刃锥形弹丸侵彻薄铝膜时的破裂和侵彻现象。实验也证实了这一现象。（2）挤压现象预测：采用显式动力有限元方法对蜂窝结构的吸能现象进行了模拟，并将模拟结果与铝蜂窝结构的挤压实验结果进行了比较。（3）薄板蜂窝单元结构的吸波性能：制作了薄板蜂窝单元结构，并进行了实验测试。结果表明，蜂窝结构的破碎伴随着板料的断裂，对吸能有很大的影响。并通过有限元模拟计算，预测了吸能效果。

项目成果

山崎光悦, 古栃 真, 深作亮太: "ハニカム構造体の衝撃吸収能向上に関する研究"日本機械学会北陸信越支部第41期総会講演会講演論文集. (予定). (2004)

Koetsu Yamazaki、Makoto Furitochi、R​​yota Fukasaku：“提高蜂窝结构的减震能力的研究”日本机械工程师学会北陆信越分会第 41 届年度大会论文集（计划）（2004 年）。

Yamazaki, K.: "Optimum Design Learned from Nature -Topology Design by Branching Tree Model -"Proc. of the 2nd China-Japan-Korea Joint Symposium on Optimization of Structural and Mechanical Systems. 1-6 (2002)

Yamazaki, K.：“从自然中学习的优化设计 - 通过分支树模型进行拓扑设计 -”Proc。

Characteristics of energy absorption of ductile sheet metal with projectile

延性金属板材弹丸吸能特性

• 发表时间: 2003
• 期刊: Proceedings of JSME Annual Meeting Vol.5
• 作者: K.Yamazaki;M.Furutochi;Y.Kashiwano
• 通讯作者: Y.Kashiwano

Takabayashi, T., Oda, J.: "A Study on Fracture phenomena of Windshield by Impact-pressure of Passenger-side Air-bag"Proceedings of IMAC-XIX. 1186-1191 (2002)

Takabayashi, T., Oda, J.：“乘客侧安全气囊冲击压力对挡风玻璃断裂现象的研究”IMAC-XIX 论文集。

山崎光悦, 高橋聡一, 米村 茂: "台形平面化した円筒の圧潰特性に関する研究"日本機械学会2003年次大会講演会講演論文集. VI. 3-4 (2003)

山崎光悦、高桥宗一、米村茂：“梯形扁圆柱体的破碎特性研究”日本机械工程学会2003年年会论文集VI 3-4。