Impact resistance of ship-build steel 945 and improved cowper-symonds models

Ying Li; Weiguo Wu; Yu Wang; Zhipeng Du; Xiaobin Li; Wei Zhang

Impact resistance of ship-build steel 945 and improved cowper-symonds models

Ying Li, Weiguo Wu, Yu Wang, Zhipeng Du, Xiaobin Li, Wei Zhang

Research output: Contribution to journal › Article › peer-review

Abstract

Under different strain rates (0.000 33~2 760 s ^{- 1}), the σ-ε relation of ship-build steel 945 has been studied with the MTS (materials test system) and the split Hopkinson press bar (SHPB), while JC model is compared with CS model. Two improved Cowper-Symonds models and corresponding parameters are obtained, and the applicability of these models is investigated. The experimental results show that the ship-build steel has a remarkable strain rate effect and a nonlinear strain hardening effect. Dynamic constitutive CS model of ship-build steel 945 can describe dynamic mechanical behaviors more exactly than JC model under high strain rate. The two improved CS models have different application field.

Original language	English
Pages (from-to)	94-100
Number of pages	7
Journal	Ship Building of China
Volume	55
Issue number	3
Publication status	Published - 1 Sept 2014
Externally published	Yes

Keywords

Cowper-Symonds model
Dynamic mechanical behavior
Impact loading
Ship-build steel 945

Cite this

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title = "Impact resistance of ship-build steel 945 and improved cowper-symonds models",

abstract = "Under different strain rates (0.000 33~2 760 s - 1), the σ-ε relation of ship-build steel 945 has been studied with the MTS (materials test system) and the split Hopkinson press bar (SHPB), while JC model is compared with CS model. Two improved Cowper-Symonds models and corresponding parameters are obtained, and the applicability of these models is investigated. The experimental results show that the ship-build steel has a remarkable strain rate effect and a nonlinear strain hardening effect. Dynamic constitutive CS model of ship-build steel 945 can describe dynamic mechanical behaviors more exactly than JC model under high strain rate. The two improved CS models have different application field.",

keywords = "Cowper-Symonds model, Dynamic mechanical behavior, Impact loading, Ship-build steel 945",

author = "Ying Li and Weiguo Wu and Yu Wang and Zhipeng Du and Xiaobin Li and Wei Zhang",

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TY - JOUR

T1 - Impact resistance of ship-build steel 945 and improved cowper-symonds models

AU - Li, Ying

AU - Wu, Weiguo

AU - Wang, Yu

AU - Du, Zhipeng

AU - Li, Xiaobin

AU - Zhang, Wei

PY - 2014/9/1

Y1 - 2014/9/1

N2 - Under different strain rates (0.000 33~2 760 s - 1), the σ-ε relation of ship-build steel 945 has been studied with the MTS (materials test system) and the split Hopkinson press bar (SHPB), while JC model is compared with CS model. Two improved Cowper-Symonds models and corresponding parameters are obtained, and the applicability of these models is investigated. The experimental results show that the ship-build steel has a remarkable strain rate effect and a nonlinear strain hardening effect. Dynamic constitutive CS model of ship-build steel 945 can describe dynamic mechanical behaviors more exactly than JC model under high strain rate. The two improved CS models have different application field.

AB - Under different strain rates (0.000 33~2 760 s - 1), the σ-ε relation of ship-build steel 945 has been studied with the MTS (materials test system) and the split Hopkinson press bar (SHPB), while JC model is compared with CS model. Two improved Cowper-Symonds models and corresponding parameters are obtained, and the applicability of these models is investigated. The experimental results show that the ship-build steel has a remarkable strain rate effect and a nonlinear strain hardening effect. Dynamic constitutive CS model of ship-build steel 945 can describe dynamic mechanical behaviors more exactly than JC model under high strain rate. The two improved CS models have different application field.

KW - Cowper-Symonds model

KW - Dynamic mechanical behavior

KW - Impact loading

KW - Ship-build steel 945

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M3 - Article

AN - SCOPUS:84925264780

SN - 1000-4882

VL - 55

SP - 94

EP - 100

JO - Ship Building of China

JF - Ship Building of China

IS - 3

ER -

Impact resistance of ship-build steel 945 and improved cowper-symonds models

Abstract

Keywords

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