F. Liu PhD (Fengxian)

I gained my Ph.D. in Mechanical Engineering from Tsinghua University in 2018. After that, I became a postdoctoral research associate at the University of Oxford. In 2022, I joined the University of Twente as an assistant professor in the research group of Computational Design of Structural Materials.

I specialize in the computational analysis of materials and structures, with particular focus on multi-scale materials and multi-physics problems. This has broad engineering applications ranging from the power generating industry to micromechanical materials.

Mathematics

# Crystal Plasticity
# Dislocation
# Dislocation Dynamics

Engineering & Materials Science

# Crystals
# Dislocations (Crystals)
# Screw Dislocations
# Vacancies

Physics & Astronomy

# Thermomigration

Faculty of Engineering Technology (ET), Computational Design of Structural Materials (CDSM)

My research focuses on understanding the behavior of complex, hierarchically structured materials through computational methods. This requires the combination of modeling techniques at different time and length scales. I work on developing multiscale and multiphysics computational methods, to advance the understanding of the microstructure-property-performance relationship of metallic materials, so as to investigate the degree to which microstructures are tunable to support the engineering of manufactured materials for temperature and radiation resistance.

My main research themes are:

Material defect physics and science (precipitates, vacancies/interstitials, dislocation loops, etc.)
Discrete dislocation plasticity
Coupled mechanical/diffusion modeling
Finite Element Modeling
Phase Field Modeling

Liu, F., Cocks, A. C. F., & Tarleton, E. (2023). Dislocation climb driven by lattice diffusion and core diffusion. Journal of the mechanics and physics of solids, 176, [105300]. https://doi.org/10.1016/j.jmps.2023.105300

Liu, F. X., Cocks, A. C. F., & Tarleton, E. (2021). Dislocation dynamics modelling of the creep behaviour of particle-strengthened materials. Proceedings of the Royal Society of London A. Mathematical, physical and engineering sciences, 477(2250), [20210083]. https://doi.org/10.1098/rspa.2021.0083

Cui, Y., Liu, Z., Hu, J. , Liu, F., & Zhuang, Z. (2020). 位错动力学在极端环境力学中的发展及应用. Gaoya Wuli Xuebao/Chinese Journal of High Pressure Physics, 34(3), [030101]. https://doi.org/10.11858/gywlxb.20200516

Liu, F., Cocks, A., Gill, S. P. A., & Tarleton, E. (2020). An improved method to model dislocation self-climb. Modelling and simulation in materials science and engineering, 28(5), [055012]. https://doi.org/10.1088/1361-651X/ab81a8

Liu, F., Cocks, A. C. F., & Tarleton, E. (2020). A new method to model dislocation self-climb dominated by core diffusion. Journal of the mechanics and physics of solids, 135, [103783]. https://doi.org/10.1016/j.jmps.2019.103783

Hu, J., Zhuang, Z. , Liu, F., Liu, X., & Liu, Z. (2019). Investigation of grain boundary and orientation effects in polycrystalline metals by a dislocation-based crystal plasticity model. Computational materials science, 86-94. https://doi.org/10.1016/j.commatsci.2018.12.010

Xie, D. G., Nie, Z-Y., Shinzato, S., Yang, Y-Q. , Liu, F., Ogata, S., Li, J., Ma, E., & Shan, Z-W. (2019). Controlled growth of single-crystalline metal nanowires via thermomigration across a nanoscale junction. Nature communications, 10(1), [4478]. https://doi.org/10.1038/s41467-019-12416-x

Haley, J. C. , Liu, F., Tarleton, E., Cocks, A. C. F., Odette, G. R., Lozano-Perez, S., & Roberts, S. G. (2019). Helical dislocations: Observation of vacancy defect bias of screw dislocations in neutron irradiated Fe–9Cr. Acta materialia, 181, 173-184. https://doi.org/10.1016/j.actamat.2019.09.031

Guo, X., Sun, C., Wang, C., Qian, L. , & Liu, F. (2018). 基于三维离散位错动力学的fcc结构单晶压缩应变率效应研究. Jinshu Xuebao/Acta Metallurgica Sinica, 54(9), 1322-1332. https://doi.org/10.11900/0412.1961.2017.00553

Wang, P. , Liu, F., Cui, Y., Liu, Z., Qu, S., & Zhuang, Z. (2018). Interpreting strain burst in micropillar compression through instability of loading system. International journal of plasticity, 107, 150-163. https://doi.org/10.1016/j.ijplas.2018.04.002

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