|Table of Contents|

Sub-plastic Impacts of Rigid Mass on Free-free Beam

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

Issue:
2011年06期
Page:
837-842
Research Field:
Publishing date:

Info

Title:
Sub-plastic Impacts of Rigid Mass on Free-free Beam
Author(s):
YANG Jun1YIN Xiao-chun1LIU Zhong-hua2QIAN Peng-bo1
1. School of Sciences,NUST,Nanjing 210094,China; 2. Technical Publication Department, Shanghai Aircraft Customer Service Company Limited,Shanghai 200241,China
Keywords:
rigid mass free-free beams sub-plastic impact rigid-plastic dynamics
PACS:
O347. 1; O313. 4
DOI:
-
Abstract:
Aiming at the effects of contact and separation on impact response, the process of a freefree beam struck horizontally by a rigid mass is investigated based on a uniaxial compression multiple- elastic-plastic contact model and rigid-plastic dynamics. The results show: such a horizontal strike is a complicated process of multiple plastic impacts; two impact zones can be divided by the variation of impact force. The calculation results show that the two impact zones have roughly the same impulse. The sub-plastic impact forms the intermittent type of impact energy transfer and most of the impact energy is transferred by the subsequent sub-plastic impacts to the beam. The sub-plastic impacts appearing continually cause the traveling plastic hinge to move back and forth transiently. The comparison with the three-dimensional dynamic finite element method shows that the rigid plastic theory can be applied to solve the sub-plastic impact problem and to obtain the main characteristics of impact responses of the beam.

References:

[1] Fahrenthold E P,Hernandez R J. Simulation of orbital debris impact on the space shuttle wing leading edge [J]. International Journal of Impact Engineering, 2006, 33( 1 /12) : 231-243.
[2] 雷洛,蔡宏伟,姚康,等. 高速公路防撞护栏受撞击 下行为的数值模拟[J]. 结构工程师,2009,25( 4) : 35-40.
[3] Ling Z,Faulkner D. Damage estimate for plating of ships and platforms under repeated impacts [J]. Marine Structures, 1996,9 ( 7) : 697-720.
[4] Shen Y N,Yin X C. Dynamic substructure model for multiple impact responses of micro /nano piezoelectric precision drive system[J]. Science in China Series E: Technological Sciences, 2009, 52( 3) : 622-633.
[5] David-West O S,Nash D H,Banks W M. An experimental study of damage accumulation in balanced CFRP laminates due to repeated impact [J]. Composite Structures, 2008, 83( 3) : 247-258.
[6] Biscans B. Impact attrition in crystallization processes: Analysis of repeated impacts events of individual crystals[J]. Powder Technology,2004,143 /144: 264 -272.
[7] Forghani A,Vaziri R. Computational modeling of damage development in composite laminates subjected to transverse dynamic loading[J]. Journal of Applied Mechanics, 2009, 76( 5) : 051304.
[8] Ruan H H,Yu T X. Local deformation models in analyzing beam-on-beam collisions[J]. International Journal of Mechanical Sciences, 2003, 45( 3) : 397-423.
[9] 刘中华,尹晓春. 钝圆头质量对简支梁的多次弹塑 性撞击[J]. 爆炸与冲击, 2010, 30( 2) : 138-144.
[10] Yang J L,Yu T X,Reid S R. Dynamic behaviour of a rigid,perfectly plastic free-free beam subjected to steploading at any cross-section along its span[J]. International Journal of Impact Engineering, 1998, 21( 3) : 165 -175.
[11] 余同希,斯壮W J. Dynamic models for structural plasticity [M]. 北京: 北京大学出版社, 2002.
[12] 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.
[13] 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.

Memo

Memo:
-
Last Update: 2012-10-25