|Table of Contents|

Characteristics of elastic-plastic sub-impacts of free-free beam struk by rigid mass

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2013年04期
Page:
613-
Research Field:
Publishing date:

Info

Title:
Characteristics of elastic-plastic sub-impacts of free-free beam struk by rigid mass
Author(s):
Kong DepingYang JunYin XiaochunShen YunianQian Pengbo
Department of Mechanics and Engineering Science,NUST,Nanjing 210094,China
Keywords:
rigid mass free-free beams impact force sub-impact elastic-plastic deformation finite difference method
PACS:
O347.4+3; O313.4
DOI:
-
Abstract:
Based on the Rayleigh theory of beams,the impact problem of a free-free beam struck horizontally by a round-nosed rigid mass is simulated by the finite difference method and the impact-separation conditions.In order to obtain the multiple impact force,a uniaxial compression elastic-plastic contact model is employed.It is found that the horizontal impact is indeed a complicated process including elastic plastic sub-impacts.There are two sub-zones of sub-impacts which are in the compression zone and the recovery zone,respectively.The second sub-zone causes the re-excitation of transient deformation of the beam.The elastic-plastic sub-impacts excite the first-order displacement response and high-order velocity responses of the beam,where the first-order displacement response is intrinsically linked to the formation of the sub-zones of sub-impacts,and the high-order velocity responses make strong influence upon the processes of sub-impacts.In addition,the transferring way of impact energy is changed obviously by sub-impacts,and a unidirectional,non-continuous,intermittent impact energy transferring model reveals.The present investigation shows that there is a complicated coupling mechanism between the elastic-plastic sub-impacts and the beam responses excited by sub-impacts.

References:

[1] Jones N,Wierzbicki T.Dynamic plastic failure of a free-free beam[J].International Journal of Impact Engineering,1987,6(3):225-240.
[2]Zhang Q,Wang X,Huang F,et al.An experimental and numerical study of the dynamic response of a free-free aluminum beam under high velocity transverse impact[J].International Journal of Impact Engineering,2009,36(12):1385-1393.
[3]Ruan H H,Yu T X.Experimental study of collision between a free-free beam and a simply supported beam[J].International Journal of Impact Engineering,2005,32:416-433.
[4]Yu T X,Yang J L,Reid S R,et al.Dynamic behaviour of elastic-plastic free-free beams subjected to impulsive loading[J].International Journal of Solids and Structures,1996,33(18):2659-2680.
[5]杨嘉陵,张娅,刘旭红.飞行器结构模型的塑性动力响应和失效研究[J].北京航空航天大学学报,2003,29(11):964-969.
Yang Jialing,Zhang Ya,Liu Xuhong.Study on the dynamic plastic response and failure of structure modeling aerospace vehicle[J].Journal of Beijing University of Aeronautics and Astronautics,2003,29(11):964-969.
[6]席丰,杨嘉陵,郑晓宁,等.自由梁受集中质量横向撞击的刚-塑性动力响应[J].爆炸与冲击,1998,18(1):54-61.
Xi Feng,Yang Jialing,Zheng Xiaoning,et al.Dynamic response of a rigid,perfectly plastic free-free beam subjected to impulsive loading[J].Explosion and Shock Waves,1998,18(1):54-61.
[7]穆建春,张铁光.刚塑性自由梁中部在横向冲击下的初始变形模式[J].爆炸与冲击,2000,20(1):7-12.
Mu Jianchun,Zhang Tieguang.Initial deformation modes of rigid-plastic free-free beams under transversal impact[J].Explosion and Shock Waves,2000,20(1):7-12.
[8]Yang J L,Xi F.Experimental and theoretical study of free-free beam subjected to impact at any cross-section along its span[J].International Journal of Impact Engineering,2003,28(7):761-781.
[9]Stoianovici D,Hurmuzlu Y.A critical study of the applicability of rigid-body collision theory[J].Journal of Applied Mechanics,1996,63(2):307-316.
[10]杨钧,尹晓春,刘中华,等.刚性质量对自由梁的塑性次撞击[J].南京理工大学学报,2012,35(6):837-842.
Yang Jun,Yin Xiaochun,Liu Zhonghua,et al.Sub-plastic impacts of rigid mass on free-free beam[J].Journal of Nanjing University of Science and Technology,2012,35(6):837-842.
[11]杨钧,尹晓春,刘中华,等.刚性质量对自由梁的弹粘塑性次撞击[J].机械工程学报,2012,48(1):72-77.
Yang Jun,Yin Xiaochun,Liu Zhonghua,et al.Elastic viscoplastic sub-impacts of free-free beam struck by rigid mass[J].Journal of Mechanical Engineering,2012,48(1):72-77.
[12]刘中华,尹晓春.自由梁对简支梁的多次弹塑性撞击[J].机械工程学报,2010,46(10):47-53.
Liu Zhonghua,Yin Xiaochun.Multiple elastic-plastic impacts between free-free beam and simply supported beam[J].Journal of Mechanical Engineering,2010,46(10):47-53.
[13]Yin X C.Multiple impacts of two concentric hollow cylinders with zero clearance[J].International Journal of Solids and Structures,1997,34(35/36):4597-4616.
[14]聂子锋,杨桂通.在质量块冲击作用下刚架大挠度响应的实验研究[J].固体力学学报,1991,12(1):44-54.
Nie Zifeng,Yang Guitong.Experimental investigation on large deflection response of a frame impacted by a moving body[J].Acta Mechanica Solida Sinica,1991,12(1):44-54.
[15]刘中华,尹晓春.钝圆柱头质量块对简支梁的多次弹塑性撞击[J].爆炸与冲击,2010,30(2):138-144.
Liu Zhonghua,Yin Xiaochun.Multiple elastic-plastic impacts of a simply supported beam struck by a round-nosed mass[J].Explosion and Shock Waves,2010,30(2):138-144.

Memo

Memo:
-
Last Update: 2013-08-31