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Determining the impact behavior of concrete beams through experimental testing and meso-scale simulation: I. Drop-weight tests

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成果类型:
期刊论文
作者:
Wu, Mingxin;Chen, Zhenfu;Zhang, Chuhan
通讯作者:
Zhang, C.
作者机构:
[Zhang, Chuhan; Wu, Mingxin] State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, China
[Chen, Zhenfu] School of Urban Construction, University of South China, Hengyang, China
通讯机构:
[Zhang, Chuhan] Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China.
语种:
英文
关键词:
Concrete;Drop-weight tests;Energy conversion;Momentum-impulse equilibrium;Rate effects
期刊:
Engineering Fracture Mechanics
ISSN:
0013-7944
年:
2015
卷:
135
页码:
94-112
基金类别:
National Natural Science Foundation of China [51479098, 51239006, 91215301]
机构署名:
本校为其他机构
院系归属:
土木工程学院
摘要:
This study investigates the impact behavior of concrete beams using drop-weight facility. Different tups were used and varying drop weights and heights were applied. This study measures impact loads, mid-span accelerations, and strains at the top and bottom edges of the beam. To distinguish the inertial and bending components of impact forces, inertial force is formulated based on elastic beam theory. When the strain rate ranges between 0.1 s(-1) and 4 s(-1), rate effect is significant given corresponding dynamic increase factors ranging from 1.6 to 3.4. Finally, the equilibrium of momentum-impulse and energy conversion are examined. (C) 2014 Elsevier Ltd. All rights reserved.

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