Geometric deep learning for computational mechanics part i: Anisotropic hyperelasticity NN Vlassis, R Ma, WC Sun
Computer Methods in Applied Mechanics and Engineering 371, 113299, 2020
193 2020 FFT-based solver for higher-order and multi-phase-field fracture models applied to strongly anisotropic brittle materials R Ma, WC Sun
Computer methods in applied Mechanics and engineering 362, 112781, 2020
66 2020 Modeling the evolution of microtextured regions during α/β processing using the crystal plasticity finite element method R Ma, AL Pilchak, SL Semiatin, TJ Truster
International Journal of Plasticity 107, 189-206, 2018
41 2018 Grain refinement of HAZ in multi-pass welding R Ma, K Fang, JG Yang, XS Liu, HY Fang
Journal of Materials Processing Technology 214 (5), 1131-1135, 2014
33 2014 Combined crystal plasticity and grain boundary modeling of creep in ferritic-martensitic steels: I. Theory and implementation O Nassif, TJ Truster, R Ma, KB Cochran, DM Parks, MC Messner, ...
Modelling and Simulation in Materials Science and Engineering 27 (7), 075009, 2019
30 2019 FFT-based homogenization of hypoelastic plasticity at finite strains R Ma, TJ Truster
Computer Methods in Applied Mechanics and Engineering 349, 499-521, 2019
29 2019 Molecular dynamics inferred transfer learning models for finite‐strain hyperelasticity of monoclinic crystals: Sobolev training and validations against physical constraints NN Vlassis, P Zhao, R Ma, T Sewell, WC Sun
International Journal for Numerical Methods in Engineering 123 (17), 3922-3949, 2022
23 2022 Equivariant geometric learning for digital rock physics: estimating formation factor and effective permeability tensors from Morse graph C Cai, N Vlassis, L Magee, R Ma, Z Xiong, B Bahmani, TF Wong, Y Wang, ...
International Journal for Multiscale Computational Engineering 21 (5), 2023
17 2023 Atomistic-model informed pressure-sensitive crystal plasticity for crystalline HMX R Ma, WC Sun, CR Picu
International Journal of Solids and Structures 232, 111170, 2021
17 2021 Computational thermomechanics for crystalline rock. Part II: Chemo-damage-plasticity and healing in strongly anisotropic polycrystals R Ma, WC Sun
Computer Methods in Applied Mechanics and Engineering 369, 113184, 2020
17 2020 Combined crystal plasticity and grain boundary modeling of creep in ferritic-martensitic steels: II. The effect of stress and temperature on engineering and microstructural … MC Messner, O Nassif, R Ma, TJ Truster, K Cochran, D Parks, TL Sham
Modelling and Simulation in Materials Science and Engineering 27 (7), 075010, 2019
13 2019 A finite micro-rotation material point method for micropolar solid and fluid dynamics with three-dimensional evolving contacts and free surfaces R Ma, WC Sun
Computer Methods in Applied Mechanics and Engineering 391, 114540, 2022
12 2022 Investigating mechanical degradation due to fire exposure of aluminum alloy 5083 using crystal plasticity finite element method R Ma, TJ Truster, SB Puplampu, D Penumadu
International Journal of Solids and Structures 134, 151-160, 2018
11 2018 3D Dislocation Density–Based Crystal Plasticity Model for Rock Salt under Different Temperatures and Strain Rates WH Imseeh, R Ma, TJ Truster, A Moslehy, KA Alshibli
Journal of Engineering Mechanics 148 (3), 04021166, 2022
10 2022 Acceleration of regeneration treatment for nanostructured bainitic steel welding by static recrystallisation KJ Song, K Fang, JG Yang, R Ma, XS Liu, JJ Wang, HY Fang
Materials Science and Technology 31 (7), 835-842, 2015
10 2015 Phase field modeling of coupled crystal plasticity and deformation twinning in polycrystals with monolithic and splitting solvers R Ma, WC Sun
International Journal for Numerical Methods in Engineering 122 (4), 1167-1189, 2021
9 2021 Domain partitioning material point method for simulating shock in polycrystalline energetic materials R Ma, WC Sun, CR Picu, T Sewell
Computer Methods in Applied Mechanics and Engineering 404, 115815, 2023
7 2023 A Hierarchical Multiscale Modeling Investigation on the Behavior of Microtextured Regions in Ti-6242 α /β Processing R Ma, TJ Truster
Metals 9 (2), 233, 2019
3 2019 MD-inferred neural network monoclinic finite-strain hyperelasticity models for NN Vlassis, P Zhao, R Ma, T Sewell, WC Sun
arXiv preprint arXiv:2112.02077, 2021
2 2021 Investigating the evolution of microtextured region in Ti-6242 using FE-FFT multiscale modeling method R Ma
2 2018 
WaiChing SunAssociate Professor of Civil Engineering and Engineering Mechanics, Columbia UniversityEmail verificata su columbia.edu