|本期目录/Table of Contents|

[1]王秀丽,马肖彤.冲击荷载作用下受损网壳结构全过程动力响应分析[J].建筑科学与工程学报,2013,30(03):14-19.
　WANG Xiu-li,MA Xiao-tong.Whole Process of Dynamic Response of Damaged Reticulated Structure Shell Under Impact Load[J].Journal of Architecture and Civil Engineering,2013,30(03):14-19.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
30卷
期数:
2013年03期
页码:
14-19
栏目:
出版日期:
2013-09-30

文章信息/Info

Title:
Whole Process of Dynamic Response of Damaged Reticulated Structure Shell Under Impact Load
作者:
王秀丽，马肖彤
兰州理工大学土木工程学院
Author(s):
WANG Xiu-li, MA Xiao-tong
关键词:
冲击荷载; 受损网壳; 动力稳定性; 全过程响应
Keywords:
impact load;  damaged reticulated shell;  dynamic stability;  whole process response
分类号:
-
DOI:
-
文献标志码:
A
摘要:
选用K6型单层受损网壳结构模型，利用国际通用计算动力荷载的非线性有限元软件ANSYS/LS-DYNA 进行数值模拟，建模时考虑材料应变率的影响；分别在顶点和损伤点施加冲击荷载，追踪在不同荷载峰值作用下结构的全过程动力响应，绘制节点的荷载-位移曲线，依据B-R准则，得到荷载作用在不同冲击点时网壳动力失稳的临界荷载，并对比相同幅值静力荷载作用下的结构响应。结果表明：冲击荷载作用下的结构响应远大于静力荷载作用下的，且结构破坏形式也不相同；对于受损结构，要避免在受损区域承受冲击荷载，受损部位需要进行及时维修加固。
Abstract:
A K6 damaged single-layer reticulated shell structure model was established with the international universal nonlinear finite element software ANSYS/LSDYNA which was specialized in computing dynamic load. The influence of material strain rate was considered. The vertex points and damaged points were respectively applied with impact load to track the whole process of dynamic response of structure under different peak loads. Node loaddisplacement curves were calculated and described. According to B-R criteria, dynamic instability critical loads under different points of impact loads were got and compared to structural response under the actions of the same amplitude static loads. The results show that structural response under impact load is much greater than that under static load and the failure forms of structure are not the same. The conditions of damaged area exerted impact load need to be avoided for damaged structure and the damaged parts need repair and reinforce.

参考文献/References:

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备注/Memo

备注/Memo:
更新日期/Last Update: 2014-09-03