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PRISMS-Plasticity: An open-source crystal plasticity finite element software
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BCC_Polycrystal_Tension:
In this example, the capability of the PRISMS-Plasticity CPFE software to model BCC polycrystalline samples is demonstrated. To do so, the response of a polycrystalline sample of the β titanium alloy Timetal 21S during uniaxial tension is modeled. The results can be compared to simulation results reported by Qidwai et al. (2009).
FCC_Polycrystal_NeperConformingMesh:
Here, the PRISMS-Plasticity CPFE software is used to replicate the results presented by Anand and Kothari (1996) for polycrystalline OFHC copper with initial random orientations during a compression experiment. A polycrystalline copper sample consists of 200 randomly oriented grains is generated using Neper. The conforming FE discretization was generated from the Neper output by converting the tetrahedral elements to hexahedral elements using the tet-to-hex converter which is included as a utility software within the PRISMS-Plasticity CPFE code.
FCC_Polycrystal_NeperNonConformingMesh:
Here, the PRISMS-Plasticity CPFE software is used to replicate the results presented by Anand and Kothari (1996) for polycrystalline OFHC copper with initial random orientations during a compression experiment. A polycrystalline copper sample consists of 200 randomly oriented grains is generated using Neper. The nonconforming FE discretization with a regular 32×32×32 mesh was generated to model the polycrystalline sample.
FCC_Polycrystal_RandomOrientationBlock:
Here, the PRISMS-Plasticity CPFE software is used to replicate the results presented by Anand and Kothari (1996) for polycrystalline OFHC copper with initial random orientations during a compression experiment. the isotropic polycrystalline sample is modeled as an aggregate of 400 single crystals with random orientations, with each grain being modeled by a single eight-node linear hexahedral element. Accordingly, a 5×8×10 FE cubic mesh is generated in the x, y, and z directions, which each element represents a single grain.
HCP_Polycrystal_Compression:
The twinning model used in PRISMS-Plasticity CPFE, simulation results are compared against the experimental results during uniaxial compression test reported by Wu (2009) for extruded Mg alloy ZK60A sample at room temperature. The polycrystalline sample is modeled as an aggregate of 1080 single crystals, which reproduces the extruded sample, each grain being modeled by a single eight-node linear hexahedral element. Accordingly, an 8×9×15 FE cubic mesh is generated in the x, y, and z directions, in which each element represents a single grain.
HCP_Polycrystal_Tension:
The twinning model used in PRISMS-Plasticity CPFE, simulation results are compared against the experimental results during uniaxial tension test reported by Wu (2009) for extruded Mg alloy ZK60A sample at room temperature. The polycrystalline sample is modeled as an aggregate of 1080 single crystals, which reproduces the extruded sample, each grain being modeled by a single eight-node linear hexahedral element. Accordingly, an 8×9×15 FE cubic mesh is generated in the x, y, and z directions, in which each element represents a single grain. This work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award#DE-SC0008637 as part of the Center for Predictive Integrated Structural Materials Science (PRISMS Center) at University of Michigan. We also acknowledge the financial cost-share support of University of Michigan College of Engineering and Office of the Vice President for Research. PRISMS Center, Materials Science and Engineering, University of Michigan, , Ann Arbor, MI 48109, USA. |
Mohammadreza yaghoobi |
4 years ago |
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The effects of heat treatment on the response of WE43 Mg alloy: crystal plasticity finite element simulation and SEM-DIC experiment
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This dataset includes initial EBSD maps of the Magnesium Rare-Earth alloy, SEM-DIC datasets with displacement and strain maps for a given Field of View (FOV), and Crystal Plasticity Finite Element simulations of the strain field, slip and twin activity for the same FOVs by setting up a Boundary Value Problem (BVP) with same boundary displacement conditions as the experimental data. The simulations have been performed using the PRISMS-CPFE code. The experimental input displacement and strain maps are in .mat format, readable by programs such as Matlab. The output files are in the *.vtu format, readable by programs such as VisIt and ParaView. This work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award#DE-SC0008637 as part of the Center for Predictive Integrated Structural Materials Science (PRISMS Center) at University of Michigan. |
Sriram Ganesan |
4 years ago |
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Characterizing Microscale Deformation Mechanisms and Macroscopic Tensile Properties of a High Strength Magnesium Rare-Earth Alloy WE43-T5 : A Combined Experimental and Crystal Plasticity Approach
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This dataset includes initial EBSD maps of the Magnesium Rare-Earth alloy, SEM-DIC datasets with displacement and strain maps for a given Field of View (FOV), and Crystal Plasticity Finite Element simulations of the strain field, slip and twin activity for the same FOVs by setting up a Boundary Value Problem (BVP) with same boundary displacement conditions as the experimental data. The simulations have been performed using the PRISMS-CPFE code. The experimental input displacement and strain maps are in .mat format, readable by programs such as Matlab. The output files are in the *.vtu format, readable by programs such as VisIt and ParaView. Details regarding the simulation and characterization methods can be found in the linked paper. U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences, Award Number DE-SC0008637 |
Sriram Ganesan |
4 years ago |
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Quantification of Cyclic Twinning-Detwinning Behavior During Low-Cycle Fatigue of Pure Magnesium Using High Energy X-Ray Defraction
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The dataset contains the data supplement for: A.D. Murphy-Leonard, D.C. Pagan, A. Beaudoin, M.P. Miller, J.E. Allison, Quantification of cyclic twinning-detwinning behavior during low-cycle fatigue of pure magnesium using high energy X-ray diffraction. International Journal of Fatigue, 125 (2019), 314-323. https://doi.org/10.1016/j.ijfatigue.2019.04.011
The cyclic twinning and detwinning behavior of extruded Mg was investigated using in-situ high energy X-ray diffraction (HEXD) under fully-reversed low cycle fatigue conditions. Measurements were conducted at three levels of applied strain. The initial texture was such that the c-axis in most grains was perpendicular to the loading direction, an orientation in which extension twinning is favored during compressive loading. At strain amplitudes greater than 0.5%, tension-compression asymmetry was observed during cyclic loading and related to cyclic twinning and detwinning. The twinning and detwinning behavior were characterized by monitoring the evolution of X-ray diffraction peaks associated with the basal {0 0 0 2} planes throughout selected cycle. At cyclic strains greater than 0.5%, in-situ HEXD results show that twinning occurs during the compression portion of the cycle and, at early stages of fatigue, most twins are detwinned under reversed loading during the tensile portion of the cycle. It was also observed that as the number of fatigue cycles increases the twin volume fraction increases. After 100–200 fatigue cycles, the detwinning process was observed to be incomplete and a significant fraction of residual twins remained throughout an entire cycle. Using electron back scatter diffraction imaging on the surface of interrupted fatigue tests, twinning and detwinning behavior was investigated and the presence of persistent twins, including residual twins, was observed. At a lower applied strain (0.4%), twinning and tension-compression yield asymmetries associated with twinning were not observed. |
Aeriel Murphy |
2 days ago |
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Multiscale modeling of twinning and detwinning behavior of HCP polycrystals
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The dataset include the input files to simulate the cyclic response of the extruded Mg alloy ZK60A sample along the extrusion direction. In the corresponding published paper (See the Papers section), this is presented in Fig. 7 along the comparison with the experimental values reported by Wu et al. (2008b) and Wu (2009). |
Mohammadreza yaghoobi |
4 years ago |
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Mg-4Al tensile dogbone sample
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Data for Mg-4Al dogbone sample |
Yung Suk Jeremy Yoo |
3 years ago |
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Deformation twinning and detwinning in extruded Mg-4Al
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Deformation twinning and detwinning in extruded Mg-4Al were investigated using in-situ SEM-DIC experiments and crystal plasticity finite element (CPFE) simulation. In this study, the in-situ SEM-DIC method was used to provide a unique set of data including twin/detwin characteristics and twin area fraction in addition to strain maps. A statistical analysis of the activation of twin variants and twin area fraction during both twinning and detwinning was conducted. A strong correlation was found between twin growth/shrinkage and the Schmid Factor (SF) for individual twin variants Higher twin SF during loading and unloading led to higher twin growth and shrinkage, respectively. However, after the applied compressive strain was removed, the pattern of the twin area fractions of the residual twin variants versus their nominal SFs did not follow the trend observed at the maximum compressive strain. Using a systematic methodology and an advanced twin/detwin model, the PRISMS-Plasticity CPFE simulation was calibrated using experimentally determined stress versus strain and twin area fraction versus strain information. A comprehensive evaluation of the CPFE model was conducted to determine its ability to capture the statistics of twin variants activation and twin area fraction. CPFE accurately captured the statistical aspects of both twinning and detwinning. It also predicted the first dominant twin variant for 47.5% of the grains and at least one of the two dominant twin variants for 80% of the grains at maximum compressive strain. |
Mohammadreza yaghoobi |
3 years ago |
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PRISMS‑Indentation: Multi‑scale Elasto‑Plastic Virtual Indentation Module
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This data set includes the input files, scripts, and output files for the manuscript of "PRISMS‑Indentation: Multi‑scale Elasto‑Plastic Virtual Indentation Module". |
Mohammadreza yaghoobi |
1 year ago |