Modeling the Dynamic Failure of Railroad Tank Cars Using a Physically Motivated Internal State Variable PlasticityDamage Nonlocal Model
Joint Authors
Enakoutsa, Koffi
Solanki, Kiran N.
Tjiptowidjojo, Yustianto
Ahad, Fazle R.
Bammann, Douglas J.
Source
Modelling and Simulation in Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-03-11
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
We used a physically motivated internal state variable plasticity/damage model containing a mathematical length scale to idealize the material response in finite element simulations of a large-scale boundary value problem.
The problem consists of a moving striker colliding against a stationary hazmat tank car.
The motivations are (1) to reproduce with high fidelity finite deformation and temperature histories, damage, and high rate phenomena that may arise during the impact accident and (2) to address the material postbifurcation regime pathological mesh size issues.
We introduce the mathematical length scale in the model by adopting a nonlocal evolution equation for the damage, as suggested by Pijaudier-Cabot and Bazant in the context of concrete.
We implement this evolution equation into existing finite element subroutines of the plasticity/failure model.
The results of the simulations, carried out with the aid of Abaqus/Explicit finite element code, show that the material model, accounting for temperature histories and nonlocal damage effects, satisfactorily predicts the damage progression during the tank car impact accident and significantly reduces the pathological mesh size effects.
American Psychological Association (APA)
Ahad, Fazle R.& Enakoutsa, Koffi& Solanki, Kiran N.& Tjiptowidjojo, Yustianto& Bammann, Douglas J.. 2013. Modeling the Dynamic Failure of Railroad Tank Cars Using a Physically Motivated Internal State Variable PlasticityDamage Nonlocal Model. Modelling and Simulation in Engineering،Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-500282
Modern Language Association (MLA)
Ahad, Fazle R.…[et al.]. Modeling the Dynamic Failure of Railroad Tank Cars Using a Physically Motivated Internal State Variable PlasticityDamage Nonlocal Model. Modelling and Simulation in Engineering No. 2013 (2013), pp.1-11.
https://search.emarefa.net/detail/BIM-500282
American Medical Association (AMA)
Ahad, Fazle R.& Enakoutsa, Koffi& Solanki, Kiran N.& Tjiptowidjojo, Yustianto& Bammann, Douglas J.. Modeling the Dynamic Failure of Railroad Tank Cars Using a Physically Motivated Internal State Variable PlasticityDamage Nonlocal Model. Modelling and Simulation in Engineering. 2013. Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-500282
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-500282