Zobrazeno 1 - 10 of 73 pro vyhledávání: '"Douglas J. Bammann"'
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Akademický článek
Modeling the Dynamic Failure of Railroad Tank Cars Using a Physically Motivated Internal State Variable Plasticity/Damage Nonlocal Model
Autor: Fazle R. Ahad, Koffi Enakoutsa, Kiran N. Solanki, Yustianto Tjiptowidjojo, Douglas J. Bammann
Publikováno v: Modelling and Simulation in Engineering, Vol 2013 (2013)
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 m
Externí odkaz: https://doaj.org/article/52fa6ef35896464b9b747a65e1ca8dd9
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2
Development, implementation, and assessment of a continuum model of anisotropic behavior of polycrystalline materials due to texture using a second-order structure tensor
Autor: Brandon C Templin, Adetokunbo A Adedoyin, Koffi Enakoutsa, Douglas J Bammann
Publikováno v: Mathematics and Mechanics of Solids. 27:2428-2450
An Evolving Micro-structural Model of Inelasticicty is modified to capture evolving anisotropy resulting from underlying texture. Anisotropy is modeled via a second-order orientation tensor resulting from the truncation to second order of an orientat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::06d8d9f15f5a1ccba38ae6a2c35c0696
https://doi.org/10.1177/10812865211073076
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3
A combined viscoelasticity-viscoplasticity-anisotropic damage model with evolving internal state variables applied to fiber reinforced polymer composites
Autor: Youssef Hammi, Mark F. Horstemeyer, Yucheng Liu, Douglas J. Bammann, Ge He
Publikováno v: Mechanics of Advanced Materials and Structures. 28:1775-1796
A thermodynamically-consistent large strain viscoelasticity-viscoplasticity-damage Internal State Variable (ISV) constitutive material model integrated with a mixture theory combining each individu...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5acbe206e835329a2cfd3ff799b4094f
https://doi.org/10.1080/15376494.2019.1709673
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5
On the formulation of the kinematics and thermodynamics for polycrystalline materials undergoing phase transformation
Autor: Adetokunbo Adedoyin, Koffi Enakoutsa, Douglas J. Bammann
Publikováno v: International Journal of Plasticity. 123:101-120
Commonly implemented material processing routines not limited to quenching, welding or heat treatment requires exposure of a part to complex thermal and mechanical loading histories that manifest as residual stress and distortion. Of interest to mate
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e2043e156bda29fca08d8b2baa18ad5
https://doi.org/10.1016/j.ijplas.2019.07.012
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An Assessment of the Evolving Microstructural Model of Inelasticity Coupled With Dislocation- and Disclination-Based Incompatibilities
Autor: Koffi Enakoutsa, Douglas J. Bammann, Adetokunbo Adedoyin
Publikováno v: Journal of Engineering Materials and Technology. 141
The evolving microstructural model of inelasticity (EMMI) previously developed as an improvement over the Bammann–Chiesa–Johnson (BCJ) material model is well known to describe the macroscopic nonlinear behavior of polycrystalline metals subjected
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6acf549adcec6f4bee066599f6820af3
https://doi.org/10.1115/1.4043627
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8
An Elastothermoviscoplasticity Anisotropic Damage Model for Short Fiber Reinforced Polymer Composites
Autor: Douglas J. Bammann, Mark F. Horstemeyer, Ge He, Yucheng Liu
Publikováno v: Volume 12: Materials: Genetics to Structures.
By using the internal state variable (ISV) theory (Horstemeyer and Bammann, 2010), we developed a finite deformation anisotropic and temperature dependent constitutive model to predict elastoviscoplasticity and progressive damage behavior of short fi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fd3de886fee45757625d7cbab929cad5
https://doi.org/10.1115/imece2018-86286
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9
A Multiphase Internal State Variable Model With Rate Equations for Predicting Elastothermoviscoplasticity and Damage of Fiber Reinforced Polymer Composites
Autor: Douglas J. Bammann, Yucheng Liu, Ge He, Mark F. Horstemeyer
Publikováno v: Volume 9: Mechanics of Solids, Structures and Fluids; NDE, Structural Health Monitoring and Prognosis.
This paper agglomerates an Internal State Variable (ISV) model for polymers (Bouvard et al., 2010, 2013) with damage evolution (Horstemeyer and Gokhale, 1999: Horstemeyer et al., 2000; Francis et al., 2014) into a multiphase ISV framework (Rajagopal
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dbd9c94c2f284d438674c80e091d24af
https://doi.org/10.1115/imece2017-70582
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10
Nonlocal modeling in high-velocity impact failure of 6061-T6 aluminum
Autor: Fazle R. Ahad, Koffi Enakoutsa, Kiran Solanki, Douglas J. Bammann
Publikováno v: International Journal of Plasticity. 55:108-132
In this paper, we present numerical simulations with local and nonlocal models under dynamic loading conditions. We show that for finite element (FE) computations of high-velocity, impact problems with softening material models will result in spuriou
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::916d3453a9c369b0b07dae495806710d
https://doi.org/10.1016/j.ijplas.2013.10.001
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