Strain rate sensitive steel constitutive models for finite element analysis of vessel-structure impacts

Getter, Daniel J.; Kantrales, George C.; Consolazio, Gary R.; Eudy, Stephen; Fallaha, Sam

doi:10.1016/j.marstruc.2015.09.001

Cited by 27 publications

(3 citation statements)

References 13 publications

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“…The Young's modulus and yield strength of the HPB 335 steel were 203 GPa and 450 MPa, respectively, and the tensile stress-strain curve is given in Figure 1b. With increasing strain rate, the Cowper-Symonds model was employed to deline the strain rate effect [46]: With increasing strain rate, the Cowper-Symonds model was employed to delineate the strain rate effect [46]:…”

Section: Quasi-static and Dynamic Mechanical Properties Of Concrete A...mentioning

confidence: 99%

Impact Performance of RC Beams Reinforced by Engineered Cementitious Composite

2023

Buildings

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To mitigate potential damage to RC structures subjected to impact load—especially spalling damage—engineered cementitious composite (ECC) is applied, with the aim of reinforcing the RC members, so as to improve their impact performance. In the present study, the response of beams, with and without ECC reinforcement, to impact loading was investigated. Firstly, the mechanical properties of the ECC were characterized by quasi-static compression and tension tests, as well as by dynamic direct tension tests. Then, the K&C model (Karagozian and Case Concrete Model) was employed to delineate the ECC behavior, whose parameters were calibrated using the test data. Subsequently, models of RC beams with and without ECC reinforcement, validated using the drop weight test, were established to investigate the impact response. The numerical results suggested that the performance of the impact resistance of the ECC-reinforced RC beams was significantly improved. The damage degree of the ECC-reinforced members was effectively reduced, the degree of deformation was effectively controlled, and the energy consumption capacity was significantly increased while the impact load and transferred load increased. In particular, the method of multiple separate layers as reinforcement, proposed in this study, was found to reduce effectively the response and damage extent, improve the energy dissipation, and control the impact load and transferred load within certain levels. In addition, the multiple separate ECC layers effectively prevented the crack propagation caused by the cracking of the member, ensured the residual integrity of the member, and further improved the performance of the impact resistance of the member comprehensively.

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Section: Quasi-static and Dynamic Mechanical Properties Of Concrete A...mentioning

confidence: 99%

Impact Performance of RC Beams Reinforced by Engineered Cementitious Composite

2023

Buildings

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“…Since steel structure is very sensitive to the change of strain rate, diverse models have been established to predict the dynamic deformation behavior of structural steels [11][12][13][14][15]. The Johnson-Cook (J-C) model defines the constitutive relation of the effective yield stress with strain, strain rate and temperature [11].…”

Section: Introductionmentioning

confidence: 99%

“…Compared with the J-C models, a modified Hollomon-Voce model is proposed to predict the ratedependent response. According to the dynamic response of S235, S690QL and S960QL, Alabi et al [14,15] proposed the strain hardening exponent and strain sensitivity to explain the mechanical performance of these materials even in the presence of flaws. Nevertheless, the classical Cowper-Symonds (C-S) constitutive model has been widely applied to describe the performance of materials under dynamic deformation situations with good reliability [16,17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Material Anisotropy on the Mechanical Response of Automotive Steel under High Strain Rates

et al. 2022

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A constitutive model for automobile steel with high elongation needs to be established to predict the dynamic deformation behavior under hydroforming applications. In order to clarify the confusing discrepancy in the essential parameters of the classical Cowper-Symonds (C-S) model, a series of automobile structural steels have been employed to investigate the strain rate response by conducting tensile dynamic deformation. Metallographic microscopy and orientation distribution functions were used to characterize the microstructure and texture components of the steels. The microstructure observation discloses that the matrix of all steels is mainly of ferrite and the texture constituent provides a framework for steel to withstand external deformation. The C-S model can be applied to simulate the dynamic deformation with satisfied expectations. It is concluded that the essential parameters D and p in the model show a specific relationship with the steel grade, and the parameter D is proportional to the steel grade and related to material anisotropy, while the parameter p is inversely proportional to the steel grade and has close links with the grain boundary characteristics.

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A Simplified Simulation Strategy for Barge-Bridge Collision

Wu,

Cheng,

2024

Springer Tracts in Civil Engineering

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Strain rate sensitive steel constitutive models for finite element analysis of vessel-structure impacts

Cited by 27 publications

References 13 publications

Impact Performance of RC Beams Reinforced by Engineered Cementitious Composite

Impact Performance of RC Beams Reinforced by Engineered Cementitious Composite

Effect of Material Anisotropy on the Mechanical Response of Automotive Steel under High Strain Rates

A Simplified Simulation Strategy for Barge-Bridge Collision

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