Welcome to Dr. Chao Sun's Lab
Dr. Sun’s research focuses on understanding the complex dynamic characteristics of mechanical systems and civil infrastructures exposed to complicated environmental loadings such as winds, storm surge, ocean waves, seismic excitations, impacts, ice loadings and so forth. The research objective is to develop cost-effective, energy-efficient and intelligent solutions to mitigate and diagnose the structural damage caused by environmental effects. His primary research interests include:
  • Structural Dynamics, Smart Sensing and Vibration Control;
  • Hazard Modeling and Mitigation for Civil Infrastructures;
  • Machine Learning-based Damage Diagnosis;
  • Fluid Structure Interaction between Ocean Waves and Structures;
  • Analytical, Numerical and Experimental Modeling of Nonlinear Vibrations;
  • Energy Harvesting from Ambient Vibrations and Ocean Waves;
  • Data Acquisition and Signal Processing
chao's pic
Chao Sun, Ph.D., P.E.
Associate Professor
Education
  • Ph.D., 2013, Rice University, Houston, Texas, USA.
  • M.S., 2009, Tongji University, Shanghai, China.
  • B.S., 2006, Shanghai Jiaotong University, Shanghai, China.
Contact
  • Office: 3240M Patrick F. Taylor Hall
  • Phone: (225) 578-8511 / Fax: (225) 578-4945
  • Email: csun@lsu.edu
Recent News
Vahid Jahangiri won the 2022 Outstanding Dissertation Award in the LSU College of Engineering (04/2022). Congrats, Vahid!
We have one PhD student position in fluid mechanics and computational fluid dynamics (CFD). Please contact Dr. Sun if you have an interest.
Our paper on a 3D nonlinear tuned mass damper and application in floating offshore wind turbines has been published in OE. (03/2022). Congrats, Vahid!
Publications (* denotes corresponding author)
  • [45] C. Sun*, W. Song, V. Jahangiri. A Real-Time Hybrid Simulation Framework for Floating Offshore Wind Turbines (Under review).
  • [44] T. Ma, C. Sun*. Characterization of Coupled Turbulent Wind-wave flows Using Large Eddy Simulation (Under review).
  • [43] Xiangjie Wang, C.S. Cai*, Peng Yuan, Guoji Xu, C. Sun*. An Improved DSRFG Inlet Flow Generation Method and Its Application in Simulating Wind Loading on Low-rise Buildings (Under review).
  • [42] V. Jahangiri, C. Sun*. A novel two dimensional nonlinear tuned mass damper inerter and its application in vibration mitigation of wind turbine blade (Under review).
  • [41] V. Jahangiri, C. Sun*. A novel three-dimensional nonlinear tuned mass damper and its application for reducing vibrations of offshore floating wind turbines, Ocean Engineering, 2022, 110703.
  • [40] Z. Zhang, C. Sun*, V. Jahangiri. Structural Damage Identification of Offshore Wind Turbines: a Two-step Strategy via FE Model Updating, Structural Control and Health Monitoring, e2872.(DOI: 10.1002/stc.2872).
  • [39] D. Wang, S. Li, C. Sun*, Guoqing Huang, Qingshan Yang. Assessment of wind-induced fragility of transmission towers under quasi-static wind load, Wind and Structures, 2021, 33(4): 343-352.
  • [38] G. Zhao, J. Xu, J. Zhou, M. Zhang, C. Sun*. Study of thermal-structural characteristics of electrified conductors under aeolian vibration, Wind and Structures, 241, 2021, 112383.
  • [37] B. Zhu, C. Sun*, Y. Huang, Ice-induced vibration response analysis of monopile offshore wind turbine, China Civil Engineering Journal (In Chinese), 2021, DOI: 10.15951/j.tmgcxb.2021.01.008.
  • [36] V. Jahangiri, C. Sun*, F. Kong. Study on a 3D pounding pendulum tuned mass damper for mitigating bi-directional vibration of offshore wind turbines, Engineering Structures, 241, 2021, 112383.
  • [35] Z. Zhang, C. Sun*, B. Guo. Transfer-Learning Guided Bayesian Model Updating for Structural Damage Detection Accounting for Modeling Uncertainty, Mechanical System and Signal Processing, 166, 2022, 108426.
  • [34] C. Sun*, V. Jahangiri, H. Sun. Adaptive Bi-directional Vibration Control of Offshore Wind Turbines with Time-varying Structural Properties Structural Control and Health Monitoring, DOI: 10.1002/stc.2817.
  • [33] T. Ma, C. Sun*. Large Eddy Simulation of Hurricane Boundary Layer Turbulence and Its Application for Power Transmission Systems, Journal of Wind Engineering and Industrial Dynamics, 2021, 210:104520.
  • [32] B. Zhao, C. Sun*, Y Zheng, Y. Cai, Effects of adjacent braces interaction on the out-of-plane flexural behavior of CHS connections, Engineering Structures, 2021, 231:111711.
  • [31] B. Zhu, C. Sun*, V. Jahangiri, Characterizing and Mitigating Wind Ice-induced Vibration of Monopile Offshore Wind Turbines, Ocean Engineering, 2021, 219:108406..
  • [30] Z. Zhang, C. Sun*. Structural Damage Localization via Physics-Guided Machine Learning: A Methodology Integrating Pattern Recognition and Finite Element Model Updating,Structural Health Monitoring, https://doi.org/10.1177/1475921720927488.
  • [29] W. Song, C. Sun, Y. Zuo, V. Jahangiri, Y. Lu, Q. Han. Conceptual Study of a Real-Time Hybrid Simulation Framework for Monopile Offshore Wind Turbines under Wind and Wave Loads, Frontiers in Built Environment doi.org/10.3389/fbuil.2020.00129.
  • [28] Z. Zhang, C. Sun*, A Numerical Study of Multi-Site Damage Identification: A Data-Driven Method via Constrained Independent Component Analysis, Structural Control and Health Monitoring. https://doi.org/10.1002/stc.2583
  • [27] V. Jahangiri, C. Sun*. Three Dimensional Vibration Control of Spar-type Offshore Wind Turbines Using Multiple Tuned Mass Dampers, Ocean Engineering 206(15): 107196.
  • [26] Z. Zhang, C. Sun*, Y. Huang, Sparse Signal Recovery for WIM Measurements from Under-sampled Data through Compressed Sensing with Highly Coherent Sensing Matrices, Measurement, 2020, 151: 1-18.
  • [25] B. Zhao, C. Sun*, H. Li. Study on the moment-rotation behavior of eccentric rectangular hollow section cross-type connections under out-of-plane bending moment and chord stress, Engineering Structures, 2020, 207:110211 .
  • [24] B. Zhao, C. Sun*, Y. Cai, C. Liu. Out-of-plane bending hysteretic model for unstiffened CHS X-connections, Structures, 2020, 23:335-350.
  • [23] Z. Zhang, C. Sun*. Multi-site Structural Damage Identification Using a Machine Learning Method of Multi-label Classification, Measurement 2020, 154: 107473.
  • [22] V. Jahangiri, C. Sun*. Integrated Bi-Directional Vibration Control and Energy Harvesting of Monopile Offshore Wind Turbines, Ocean Engineering, 2019, 178: 260-269.
  • [21] C. Sun*, V. Jahangiri. Performance Evaluation of a 3D-PTMD in Offshore Wind Turbines under Multiple Hazards and Damage. Smart Structures and Systems, 2019, 24(1): 53-65.
  • [20] Z. Zhang, C. Sun*, R. Bridgelall, M. Sun. Road profile reconstruction and evaluation using connected vehicle responses and wavelet analysis. Journal of Terramechanics, 2018, 80:21-30.
  • [19] C. Sun, S. Nagarajaiah. Study on a Novel Adaptive Passive Stiffness Device and Its Application for Seismic Mitigation. Journal of Sound and Vibration, 443: 559-575.
  • [18] Z. Zhang, C. Sun*, C. Li, M. Sun. Bridge Scour Monitoring: A Data-driven Method Using Structural Modal Properties. Structural Monitoring and Maintenance, 2019, 6(2): 125-145.
  • [17] C. Sun*, V. Jahangiri. Fatigue Damage Mitigation of Offshore Wind Turbines under Real Wind and Wave Conditions, Engineering Structures, 2019, 178: 472-483.
  • [16] Z. Zhang, C. Sun*, M. Sun, R. Bridgelall. Application of a Machine Learning Method to Evaluate Road Roughness from Connected Vehicles. Journal of Transportation Engineering, Part B: Pavements, 2018, 144(4).
  • [15] W. Xu, Y. Ma, C. Ji, C. Sun. Laboratory Measurements of Vortex-induced Vibrations of a Yawed Flexible Cylinder at Different Yaw Angles. Ocean Engineering, 2018, 154:27-42.
  • [14] C. Sun*, V. Jahangiri. Bi-directional Vibration Control of Offshore Wind Turbines Using a 3D Pendulum Tuned Mass Damper. Mechanical System and Signal Processing, 2018, 105: 338-360.
  • [13] C. Sun*. Mitigation of Offshore Wind Turbines under Wind-wave Load: Considering Soil Structure Interaction and Damage. Structural Control and Health Monitoring, 2018 25(3): 1-22.
  • [12] C. Sun*. Semi-active Control of Offshore Wind Turbines under Multi-Hazards. Mechanical System and Signal Processing, 2018, 99: 285-305.
  • [11] E. Sonmez, C. Sun, S. Nagarajaiah, B. Basu. A study on Semi-active Tuned Liquid Column Dampers (sTLCDs) for Structural Response Reduction under Random Excitations. Journal of Sound and Vibration, 2016, 362: 1-15.
  • [10] R. P. Eason, C. Sun, A. J. Dick, S. Nagarajaiah. Steady-state response attenuation of a linear oscillator-nonlinear absorber system by using an adjustable-length pendulum in series: Experimental and numerical results. Journal of Sound and Vibration, 2015, 344(26): 332-344.
  • [9] C. Sun, S. Nagarajaiah, A. J. Dick. Experimental Investigation of Vibration Attenuation Using Nonlinear Tuned Mass Damper and Pendulum Tuned Mass Damper in Parallel. Nonlinear Dynamics, 2014, 78(4): 2699-2715.
  • [8] C. Sun, S. Nagarajaiah. Study on Semi-active Tuned Mass Damper with Variable Damping and Stiffness under Seismic Excitations. Structural Control and Health Monitoring: 2014, 21(6): 890-906.
  • [7] C. Sun, S. Nagarajaiah, A. J. Dick. Family of Smart Tuned Mass Dampers with Variable Frequency under Harmonic Excitations and Ground Motions: Closed-Form Evaluation. Smart Structures and Systems, 2014, 13(2): 319-341.
  • [6] C. Sun, R. P. Eason, S. Nagarajaiah, A. J. Dick. Hardening Dűffing Oscillator Attenuation Using a Nonlinear TMD, a Semi-active TMD and Multiple TMD. Journal of Sound and Vibration, 2013, 332(4): 674-686.
  • [5] R. P. Eason, C. Sun, A. J. Dick., S. Nagarajaiah. Attenuation of a linear oscillator using nonlinear and semi-active tuned mass dampers in series. Journal of Sound and Vibration, 2013, 332(1): 154-166.
  • [4] C. Sun, S. Nagarajaiah. STFT Based Real-time Control with Variable Stiffness and Damping of Smart Tuned Mass Damper for Seismic Protection. [C]. 15th World Conference on Earthquake Engineering, Lisbon, Portugal.
  • [3] R. P. Eason, C. Sun, A. J. Dick., S. Nagarajaiah. Using a Semi-Active Tuned Mass Damper to Limit the Motion of a Nonlinear Absorber and Attenuate Structural Vibrations. 2012 IMECE, ASME 2012 Congress.
  • [2] C. Sun, X. Wu, Y. Zhou, J. Li. Numerical Simulation of Concrete Stochastic Damage Constitutive Law[J]. Journal of Huazhong University of Science and Technology (Urban Science Edition), 2008, 25(4):276-279.
  • [1] Liu Hankun, Sun Chao, Li Jie. X-ray CT based Three Dimensional Numerical Simulation of Concrete in Mesoscopic Level. Journal of Architecture and Civil Engineering, 2010, 27(1):54-59.

Current Students

Tianqi Ma

Tianqi Ma

Ph.D. Candidate
Research topic: Wind-wave effects modeling and assessment of power systems.
Xiangjie Wang

Xiangjie Wang

Ph.D. Candidate
Research topic: Computational modeling of wind effect on low-rise buildings .
Tianqi Ma

Huaguan Li

Ph.D. Student
Research topic: Structural health monitoring of energy infrastructure.
Noah Taylor

Noah Taylor

Master student
Research topic: Power distribution systems exposed to multiple hazards.
Yanlin Chen

Yanlin Chen

Master Student
Research topic: Failure analysis of light poles exposed to extreme wind.

Graduated Alumini

Zhiming Zhang

Current position: postdoctoral researcher at Arizona State University

Vahid Jahangiri

Current position: postdoctoral researcher at University of Nevada, Reno.
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Facilities

1. Structural Dynamics, Vibration Testing and Control Systems

Shaking table and vibration control system
Dual-purpose shaker
Signal generation and data acquisition system
UAV for condition sensing of structures

2. Structural System Test Facilities

MTS Test Frame with Hydraulic Grip
Reaction Frame and Hydraulic Jack

Outreach

Dr. Sun taught local high school students the fundamentals of truss structures and the method to calculate forces of truss structure members. He serves as a member of the coach team to help the students prepare for a national bridge design competition.

Teaching

Fall 2018
CE 3415 Structural Analysis
CE 7430 Structural Dynamics
Spring 2018
CE 3400 Strength of Materials
CE 7701 Dynamics of Offshore Structures
Fall 2017
CE 3415 Structural Analysis
Spring 2017
CE 4410 Principles of Reinforced Concrete
Fall 2016
CE 3400 Strength of Materials
CE 7430 Structural Dynamics
Spring 2016
CE 4410 Principles of Reinforced Concrete
Fall 2015
CE 3415 Structural Analysis