Strain Rate Behavior in Tension of Reinforcing Steels HPB235, HRB335, HRB400, and HRB500

The strain rate effect of reinforcing steel bars is generally indispensable for modeling the dynamic responses of reinforced concrete structures in blast and impact events. A systematic experimental investigation was conducted on the strain rate behavior of reinforcing steel bar grades HPB235, HRB33...

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Main Authors: Feng Lin, Yu Dong, Xinxin Kuang, Le Lu
Format: Article
Language:English
Published: MDPI AG 2016-12-01
Series:Materials
Subjects:
Online Access:http://www.mdpi.com/1996-1944/9/12/1013
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spelling doaj-31476b4edbcc49dca3257dd49f73f3a72020-11-24T21:33:14ZengMDPI AGMaterials1996-19442016-12-01912101310.3390/ma9121013ma9121013Strain Rate Behavior in Tension of Reinforcing Steels HPB235, HRB335, HRB400, and HRB500Feng Lin0Yu Dong1Xinxin Kuang2Le Lu3Department of Structural Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaDepartment of Structural Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaDepartment of Structural Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaShanghai Dushi Green Engineering Co., Ltd., 2880 Shenkun Road, Shanghai 20110, ChinaThe strain rate effect of reinforcing steel bars is generally indispensable for modeling the dynamic responses of reinforced concrete structures in blast and impact events. A systematic experimental investigation was conducted on the strain rate behavior of reinforcing steel bar grades HPB235, HRB335, HRB400, and HRB500 which are widely used in the field of civil engineering in China. The dynamic testing was performed using a servo-hydraulic Instron VHS160/100-20 in a strain rate range from 2 to 75 s−1. Stress-strain curves at preset strain rates were obtained. The test data were then used to derive the parameters in a model based on the dynamic increase factors (DIFs) of strengths and the Johnson–Cook constitutive model. Results indicated that a significant strain rate effect was observed for the four rebar grades. The dynamic yield strengths increased from 13% to 41% and their ultimate strengths improved from 9% to 19% in the strain rate range during testing. The strain rate behavior of the four rebar grades could be appropriately predicted using the parameters in the model based on the DIFs of strengths and the Johnson–Cook model.http://www.mdpi.com/1996-1944/9/12/1013reinforcing steel barrebarstrain rateimpactconstitutive model
collection DOAJ
language English
format Article
sources DOAJ
author Feng Lin
Yu Dong
Xinxin Kuang
Le Lu
spellingShingle Feng Lin
Yu Dong
Xinxin Kuang
Le Lu
Strain Rate Behavior in Tension of Reinforcing Steels HPB235, HRB335, HRB400, and HRB500
Materials
reinforcing steel bar
rebar
strain rate
impact
constitutive model
author_facet Feng Lin
Yu Dong
Xinxin Kuang
Le Lu
author_sort Feng Lin
title Strain Rate Behavior in Tension of Reinforcing Steels HPB235, HRB335, HRB400, and HRB500
title_short Strain Rate Behavior in Tension of Reinforcing Steels HPB235, HRB335, HRB400, and HRB500
title_full Strain Rate Behavior in Tension of Reinforcing Steels HPB235, HRB335, HRB400, and HRB500
title_fullStr Strain Rate Behavior in Tension of Reinforcing Steels HPB235, HRB335, HRB400, and HRB500
title_full_unstemmed Strain Rate Behavior in Tension of Reinforcing Steels HPB235, HRB335, HRB400, and HRB500
title_sort strain rate behavior in tension of reinforcing steels hpb235, hrb335, hrb400, and hrb500
publisher MDPI AG
series Materials
issn 1996-1944
publishDate 2016-12-01
description The strain rate effect of reinforcing steel bars is generally indispensable for modeling the dynamic responses of reinforced concrete structures in blast and impact events. A systematic experimental investigation was conducted on the strain rate behavior of reinforcing steel bar grades HPB235, HRB335, HRB400, and HRB500 which are widely used in the field of civil engineering in China. The dynamic testing was performed using a servo-hydraulic Instron VHS160/100-20 in a strain rate range from 2 to 75 s−1. Stress-strain curves at preset strain rates were obtained. The test data were then used to derive the parameters in a model based on the dynamic increase factors (DIFs) of strengths and the Johnson–Cook constitutive model. Results indicated that a significant strain rate effect was observed for the four rebar grades. The dynamic yield strengths increased from 13% to 41% and their ultimate strengths improved from 9% to 19% in the strain rate range during testing. The strain rate behavior of the four rebar grades could be appropriately predicted using the parameters in the model based on the DIFs of strengths and the Johnson–Cook model.
topic reinforcing steel bar
rebar
strain rate
impact
constitutive model
url http://www.mdpi.com/1996-1944/9/12/1013
work_keys_str_mv AT fenglin strainratebehaviorintensionofreinforcingsteelshpb235hrb335hrb400andhrb500
AT yudong strainratebehaviorintensionofreinforcingsteelshpb235hrb335hrb400andhrb500
AT xinxinkuang strainratebehaviorintensionofreinforcingsteelshpb235hrb335hrb400andhrb500
AT lelu strainratebehaviorintensionofreinforcingsteelshpb235hrb335hrb400andhrb500
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