相似理论在泡沫铝冲击吸能过程的应用分析

王春华; 刘影

doi:10.13433/j.cnki.1003-8728.2017.1010

相似理论在泡沫铝冲击吸能过程的应用分析

doi: 10.13433/j.cnki.1003-8728.2017.1010

王春华^1,2,
刘影¹

1.
辽宁工程技术大学机械工程学院, 辽宁阜新 123000;
2.
沈阳航空航天大学机电工程学院, 沈阳 110000

基金项目:

国家自然科学基金项目（51374120）资助

详细信息

作者简介:
王春华(1963-),教授,博士,博士生导师,研究方向为机械设计及理论、机械系统动态特性与控制,1306019516@qq.com

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出版历程
- 收稿日期: 2016-06-28
- 刊出日期: 2017-10-05

Analysis of Impact Energy Absorption for Foam Aluminum Components based on Similarity Theory

Wang Chunhua^1,2,
Liu Ying¹

1.
College of Mechanical Engineering, Liaoning Technical University, Liaoning Fuxin 123000, China;
2.
College of Mechanic and Electronic Engineering, Shenyang Aerospace University, Shenyang 110000, China

摘要

摘要: 为解决大型泡沫铝元件实体冲击试验成本较高，数值模拟计算量大的问题，基于相似理论按尺寸比3：1建立三种（圆台、四棱台及六棱台型）泡沫铝元件大、小模型，应用量纲分析法推导对应模型冲击吸能量的相似比，并进行有限元仿真及小模型实体冲击试验。结果表明，冲击试验吸能量与其有限元仿真结果误差较小，验证了有限元仿真对泡沫铝轴向冲击过程的可行性。三种元件大、小模型的有限元仿真吸能量比值分别为26.51，27.18，26.73，与依量纲分析法所得吸能量相似比27：1相近，表明可基于相似理论对泡沫铝元件轴向冲击过程的吸能特性进行分析。
- 泡沫铝 /
- 相似理论 /
- 有限元仿真 /
- 冲击试验 /
- 吸能特性
Abstract: To solve the problems that the large aluminum foam element entity impact test cost is higher and the numerical simulation computation is larger, based on the similarity theory, the large and small models for three types, including a frustum of cone type, four trustum of a pyramid type and six trustum of a pyramid type of aluminum foam elements were respectively established at the geometry size ratio of 3:1, the energy absorption similarity ratio in the impact process of large and small models were deduced via dimensional analysis. Finite element simulation via large and small models were proceeded and the entity impact tests of small models were applied. The results show that the energy absorption of small models between the entity tests and the finite element method results has little errors, verifying that LS-DYNA finite element method is feasible in axial impact process of aluminum foam. The energy absorption ratios between the large and small models in finite element simulation are respectively of 26.51, 27.18, 26.73, in accordance with the ratio 27:1 derived from the dimensional analysis, the results show that it's feasible to analyze the energy absorption characteristic of foam aluminum components under the axial impact condition based on similarity theory.
- aluminum foam /
- similarity theory /
- finite element emulation /
- impact test /
- characteristic of energy absorption

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参考文献(18)

[1]	曾繁波.泡沫铝填充管的吸能特性研究及其在轿车前纵梁结构中的应用[D].广州:华南理工大学,2014 Zeng F B. Study on energy absorption capability of aluminum foam-filled tubes and its application in automotive front rails[D]. Guangzhou:South China University of Technology, 2014(in Chinese)
[2]	黄炼,吕志强,赵应龙,等.泡沫铝冲击吸能器应用设计[J].舰船科学技术,2010,32(5):88-91 Huang L, Lv Z Q, Zhao Y L, et al. Design of aluminum foam impact energy absorber for application[J]. Ship Science and Technology, 2010,32(5):88-91(in Chinese)
[3]	刘欢.泡沫铝材料的吸能与防爆特性研究[D].沈阳:东北大学,2014 Liu H. Energy absorption and explosion proof ability of aluminum foam[D]. Shenyang:Northeastern University, 2014(in Chinese)
[4]	杨昆.泡沫铝填充结构汽车车架耐撞性及动态特性研究[D].辽宁阜新:辽宁工程技术大学,2013:46-57 Yang K. Research on crashworthiness and dynamic characteristics of car frame filled with foam aluminum[D]. Liaoning Fuxin:Liaoning Technical University, 2013:46-57(in Chinese)
[5]	张健,赵桂平,卢天健.闭孔泡沫铝应变率效应的试验和有限元分析[J].西安交通大学学报,2010,44(5):97-101 Zhang J, Zhao G P, Lu T J. Experimental and numerical study on strain rate effects of close-celled aluminum foams[J]. Journal of Xi'an Jiaotong University, 2010,44(5):97-101(in Chinese)
[6]	张宗华.轻质吸能材料和结构的耐撞性分析与设计优化[D].辽宁大连:大连理工大学,2010 Zhang Z H. Crashworthiness analysis and design optimization of lightweight materials and structures for energy absorption[D]. Liaoning Dalian:Dalian University of Technology, 2010(in Chinese)
[7]	Seitzberger M, Rammerstorfer F G, Degischer H P, et al. Crushing of axially compressed steel tubes filled with aluminium foam[J]. Acta Mechanica, 1997,125(1-4):93-105
[8]	徐挺.相似理论与模型试验[M].北京:中国农业机械出版社,1982 Xu T. Similarity theory and model test[M]. Beijing:China Agricultural Machinery Press, 1982(in Chinese)
[9]	姬书得,张利国,刘雪松,等.基于相似理论解决水轮机转轮数值分析困难的方法[J].机械工程学报,2010,46(8):83-87 Ji S D, Zhang L G, Liu X S, et al. Solution for difficulties in simulation analysis of turbine runner based on similarity theory[J]. Journal of Mechanical Engineering, 2010,46(8):83-87(in Chinese)
[10]	程素秋,宁永成,张臣,等.相似理论在水下爆炸模型试验中的应用[J].舰船科学技术,2008,30(3):95-100 Cheng S Q, Ning Y C, Zhang C, et al. The applicability of scaling laws to underwater explosion models tests[J]. Ship Science and Technology, 2008,30(3):95-100(in Chinese)
[11]	蔡志鹏,鹿安理,史清宇,等.相似理论在焊接温度场和应力场及应变场中的应用[J].焊接学报,2000,21(3):79-82 Cai Z P, Lu A L, Shi Q Y, et al. Application of similitude principles to study in welding temperature, strain and stress fields[J]. Transactions of the China Welding Institution, 2000,21(3):79-82(in Chinese)
[12]	Wen C Y. Exploration and study on similarity theory[J]. Journal of Systems Engineering and Electronics, 1992,3(1):9-20
[13]	徐挺.相似方法及其应用[M].北京:机械工业出版社,1995 Xu T. Similarity method and its application[M]. Beijing:China Machine Press, 1995(in Chinese)
[14]	崔广心.相似理论与模型试验[M].江苏徐州:中国矿业大学出版社,1990 Cui G X. The similarity theory and model test[M]. Jiangsu Xuzhou:China University of Mining and Technology Press, 1990(in Chinese)
[15]	徐海斌,张德志,谭书舜,等.轴向压缩的金属薄壁圆管相似律的实验研究[C]//第20届全国结构工程学术会议论文集.宁波:中国力学学会,2011:554-559 Xu H B, Zhang D Z, Tan S S, et al. Experimental study on analogue rules of axial compression of metallic thin-walled circular tubes[C]//Proceedings of the 20th National Conference on Structure Engineering. Ningbo:Chinese Society of Theoretical and Applied Mechanics, 2011:554-559(in Chinese)
[16]	黄安斌,胡治流,温石坤.泡沫铝材料结构与性能及其应用研究[J].金属功能材料,2010,17(4):62-65 Huang A B, Hu Z L, Wen S K. Structure, properties and applications of aluminum foam materials[J]. Metallic Functional Materials, 2010,17(4):62-65(in Chinese)
[17]	兰凤崇,曾繁波,周云郊,等.闭孔泡沫铝力学特性及其在汽车碰撞吸能中的应用研究进展[J].机械工程学报,2014,50(22):97-112 Lan F C, Zeng F B, Zhou Y J, et al. Progress on research of mechanical properties of closed-cell aluminum foams and its applications in automobile crashworthiness[J]. Journal of Mechanical Engineering, 2014,50(22):97-112(in Chinese)
[18]	习Ashby M F,Evans A G,Fleck N A,等.泡沫金属设计指南[M].刘培生,王习术,李言祥,译. 北京:冶金工业出版社,2006 Ashby M F, Evans A G, Fleck N A, et al. Metal foams:a design guide[M]. Liu P S, Wang X S, Li Y X, trans. Beijing:Metallurgical Industry Press, 2006(in Chinese)