Nonlinear wave simulation
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portfolio
publications
Thermo-poroelastic modelling of cement sheath: pore pressure response, thermal effect and thermo-osmotic effect
Published in European Journal of Environmental and Civil Engineering, 2019
Recommended citation: Niu, Z., Shen, J., Wang, L., & Yang, R. (2019). Thermo-poroelastic modelling of cement sheath: pore pressure response, thermal effect and thermo-osmotic effect. European Journal of Environmental and Civil Engineering, 1-26. https://doi.org/10.1080/19648189.2019.1675094
Experimental study on the seismic and aseismic deformation during the failure of granitic rock
Published in ETH Zurich, 2021
Recommended citation: Niu, Zihua. Experimental study on the seismic and aseismic deformation during the failure of granitic rock. MS thesis. ETH Zurich, Department of Earth Sciences, 2021. https://doi.org/10.3929/ethz-b-000516187
A Discontinuous-Galerkin approach to model non-classical nonlinearity observed from lab to global scales
Published in EGU, 2022
Recommended citation: Niu, Z., Gabriel, A. A., May, D., Sens-Schönfelder, C., & Igel, H. (2022). A Discontinuous-Galerkin approach to model non-classical nonlinearity observed from lab to global scales (No. EGU22-10523). Copernicus Meetings. https://doi.org/10.5194/egusphere-egu22-10523
Moment tensor and stress inversion solutions of acoustic emissions during compression and tensile fracturing in crystalline rocks
Published in Journal of Rock Mechanics and Geotechnical Engineering, 2023
Recommended citation: Niu, Z., Li, B. Q., & Moradian, O. (2023). Moment tensor and stress inversion solutions of acoustic emissions during compression and tensile fracturing in crystalline rocks. Journal of Rock Mechanics and Geotechnical Engineering. https://doi.org/10.1016/j.jrmge.2022.12.024
Numerical Simulation and Uncertainty Quantification of Models for Coseismic Damage and Healing of Rocks in 1D, 2D and 3D
Published in EGU, 2023
Recommended citation: Niu, Z., Gabriel, A. A., & Igel, H. (2023). Numerical Simulation and Uncertainty Quantification of Models for Coseismic Damage and Healing of Rocks in 1D, 2D and 3D (No. EGU23-4450). Copernicus Meetings. https://doi.org/10.5194/egusphere-egu23-4450
Modeling and Quantifying Parameter Uncertainty of Co‐Seismic Non‐Classical Nonlinearity in Rocks
Published in JGR: Solid Earth, 2023
Recommended citation: Niu, Z., Gabriel, A. A., Seelinger, L., & Igel, H. (2024). Modeling and Quantifying Parameter Uncertainty of Co‐Seismic Non‐Classical Nonlinearity in Rocks. Journal of Geophysical Research: Solid Earth, 129(1), e2023JB027149. https://doi.org/10.1029/2023JB027149
talks
Nonlinear model for non-classical nonlinearity observed from lab to global scales
Published:
Compare with experimental observation; Constrain the model parameters from experiment
- Strain-rate (frequency) dependent behavior
- Amplitude dependent damage
Parameter space exploration for the coseismic damage and healing of rock
Published:
Constrain the model parameters from experiment with MH-MCMC
- Strain-rate (frequency) dependent behavior
- Amplitude dependent damage
Simulation of waves in nonlinear rocks
Published:
Compare with experimental observation; Discuss what physical mechanism and mathematical forms can contribute
- Initial strain in the rocks
- Strain-rate (frequency) dependent behavior
- Amplitude dependent damage
Modeling co-seismic wave speed changes of rocks
Published:
3D simulation of co-seismic wave speed changes in rock from source to site
- Simulation Mw 7.8 Gorkha Earthquake in 2015.
- Understand basin effects with different types of rheology: elastic, visco-elastic, plastic and nonlinear damage models.
- Account for finite earthquake source, heterogeneous velocity structure, surface topography, basin geometry, etc.
teaching
Teaching experience 1
Undergraduate course, University 1, Department, 2014
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Teaching experience 2
Workshop, University 1, Department, 2015
This is a description of a teaching experience. You can use markdown like any other post.