轴向冲击载荷下帽形截面梁加强板设计研究

莫易敏; 徐芳; 何庆; 张杰

doi:10.13433/j.cnki.1003-8728.2016.1218

轴向冲击载荷下帽形截面梁加强板设计研究

doi: 10.13433/j.cnki.1003-8728.2016.1218

1.
武汉理工大学摩擦学研究所, 武汉 430070

详细信息

作者简介:
莫易敏(1960-),教授,博士生导师,研究方向为机电一体化、摩擦学方向,moyimin@whut.edu.cn

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出版历程
- 收稿日期: 2015-03-16
- 刊出日期: 2017-01-05

Study on Design of Stiffening Plate of Hat-section Beam Under Axial Loading

1.
Institute of Tribology, Wuhan University of Technology, Wuhan 430070, China

摘要

摘要: 为了提高帽形截面梁在轴向冲击载荷作用下的吸能特性，利用超单元理论，结合动态落锤试验，对加强板设计进行研究，从变形形式、压溃力曲线和压溃结果特征值三方面，对多胞结构进行了优势验证和对加强板的结构进行了探讨，对受到轴向冲击载荷的帽形截面梁中加强板的设计提出了一系列的建议。加强板的设计应适量在帽型梁截面较为薄弱的地方增加方形胞元的个数，可以使截面超单元的数量增加，超单元边长缩小，从而减小褶皱半波长。本文提出的方法有利于提高帽形截面梁吸能效率，有效改善结构的变形稳定性。
- 帽型截面梁 /
- 加强板 /
- 超单元 /
- 轴向冲击载荷
Abstract: In order to improve the energy absorption characteristics of the hat-section beam under axial impact load, the design of stiffening plate is studied by using super-element theory and the experiments of dynamic testing rig. From the deformation pattern, crushing force curve and characteristic value of crushing, the advantages of multi-cellular structures have been proved and the structural design of the stiffening plate has been explored. A series of strategies for structural design of stiffening plate of hat-section beam under axial loading are proposed. The stiffening plate should be used to increase the amount of square unit cells, which should be set in the weak area in the hat-section beam so as to decrease the half wavelength of the holds by increasing the number of the super-folding element and decreasing its side-length. The present method will improve the energy absorption characteristics of the hat-section beam and increase the stability of the structure deformation.
- hat-section beam /
- stiffening plate /
- super element /
- axial impact load

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参考文献(15)

[1]	江志勇.基于轿车薄壁构件碰撞的变形及吸能特性的仿真与分析[D].武汉:武汉理工大学,2009 Jiang Z Y. The simulation and analysis of deformation and energy absorption of thin beam-based car collision[D]. Wuhan: Wuhan University of Technology, 2009 (in Chinese)
[2]	刘世龄.加强板的弯矩函数列式[J].计算力学学报,1999,16(1):8-17 Liu S L. Moment function formulation of stiffened plates[J]. Chinese Journal of Computational Mechanics, 1999,16(1):8-17 (in Chinese)
[3]	杨笠,杨延鹏.微型客车正面耐撞性的结构优化研究[J].汽车工业研究,2014,(9):54-57 Yang L, Yang Y P. Structural optimization of frontal impact of a minibus[J]. Auto Industry Research, 2014,(9):54-57 (in Chinese)
[4]	余跃,周鸿波,童水光,等.一种薄壁梁加强结构及其动态抗弯性能分析[J].机械设计与,2011,28(3):80-84 Yu Y, Zhou H B, Tong S G, et al. An thin-walled beam enforcement structure and its dynamic bending performance analysis[J]. Journal of Machine Design, 2011,28(3):80-84 (in Chinese)
[5]	Zhang X, Huh H. Crushing analysis of polygonal columns and angle elements[J]. International Journal of Impact Engineering, 2010,37(4):441-451
[6]	Abramowicz W. Simplified crushing analysis of thin-walled columns and beams[J]. Engineering Transactions, 1981,29(1):5-26
[7]	Wierzbicki T, Abramowicz W. On the crushing mechanics of thin-walled structures[J]. Journal of Applied Mechanics, 1983,50(4a):727-734
[8]	Abramowicz W, Jones N. Dynamic axial crushing of square tubes[J]. International Journal of Impact Engineering, 1984,2(2):179-208
[9]	Abramowicz W, Wierzbicki T. Axial crushing of multicorner sheet metal columns[J]. Journal of Applied Mechanics, 1989,56(1):113-120
[10]	White M D, Jones N, Abramowicz W. A theoretical analysis for the quasi-static axial crushing of top-hat and double-hat thin-walled sections[J]. International Journal of Mechanical Sciences, 1999,41(2):209-233
[11]	吴晓杰,胡宏勋,刘学军,等.薄壁梁轴向压溃力的影响参数[J].机械设计与研究,2012,28(1):42-45 Wu X J, Hu H X, Liu X J, et al. Study of design parameters influencing the axial folding force of thin-walled columns based on VCS models[J]. Machine Design and Research, 2012,28(1):42-45 (in Chinese)
[12]	White M D, Jones N. Experimental quasi-static axial crushing of top-hat and double-hat thin-walled sections[J]. International Journal of Mechanical Sciences, 1999,41(2):179-208
[13]	高元明.单帽型与双帽型薄壁梁塑性变形特性的简化方法研究[D].长春:吉林大学,2011 Gao Y M. Research on simplified method for plastic deformation characteristics of top-hat and double-hat section thin-walled beams[D]. Changchun: Jilin University, 2011 (in Chinese)
[14]	余同希,卢国兴.材料与结构的能量吸收[M].华云龙,译.北京:化学工业出版社,2006 Yu T X, Lu G X. Energy absorption of structures and materials[M]. Hua Y L, trans. Beijing: Chemical Industry Press, 2006 (in Chinese)
[15]	周新宇.汽车正面碰撞及其薄壁构件吸能研究[D].沈阳:东北大学,2008 Zhou X Y. The study of vehicle frontal impact crush and its thin-wall component energy absorption[D]. Shenyang: Northeastern University, 2008 (in Chinese)