Texas A&M University

Research Assistant Professor & Assistant Director of OSSCL

Ocean System Simulation & Control Laboratory (osscl.tamu.edu)

Texas A&M University

Postdoctoral Research Associate

Project A. Shell, Semi-active Magneto-Rheological damper for Tension Leg Platform or Spar

Project B. RPSEA, Methodology and Algorithm Development for the Evaluation of Ultra-deepwater or Arctic Floating Platform Performance under Hazardous Sea Conditions

Project C. KRISO, Development of MULTI-FOWT

* Development of numerical program for the complete 2nd order hydroelastic analysis

Texas A&M University

Research Assistant

7 Selected Funded Projects of 15

“Semi-active Magneto-Rheological damper to reduce vibration of Tension Leg Platform or Spar”, Sponsor: Shell, Period: Oct 2012 ~ Oct 2014 (Primary Contributor)
• Consulted on 2-body system of Malikai TLP and DTV with 10 mooring lines, 4 hawsers and 24 risers.
• Verified experimental results of Malikai TLP against numerical results.

“Program development of hydroelasticity and design development of offshore platforms for deep water”, Sponsor: GS E&C, Period: May 2011 ~ May 2013 (Exclusive Contributor)
• Developed the new second order hydroelastic diffraction theory.
• Developed and delivered GUI-based numerical tools of fast hydroelastic dynamic and structural analyses with robust verification.
• Involved exclusively on execution from planning to verification.

“Program Development of high accuracy dynamic positioning system for float-over installation”, Sponsor: OffshoreTech LLC, Period: Jun 2012 ~ Aug 2012 (Exclusive Contributor)
• Involved exclusively on execution from planning to verification; successfully completed within 4 months. Watch circle 2 m achieved.

“Global performance investigation of offshore caisson from building to installation”, Sponsor: Samsung C&T, Period: Mar 2011 ~ May 2011 (Exclusive Contributor)

“Feasibility of LNG-FPSO and LNGC side-by-side offloading system with SPM buoy”, Sponsor: Keppel/ABS, Period: Oct 2010 ~ Mar 2011 (Primary Contributor)

“Hydrodynamic performance of mobile harbor system”, Sponsor: KAIST, Period: Jan 2010 ~ Dec 2010 (Exclusive Contributor)
• Simulated 3/4- floating body system with catamaran vessels and a CALM buoy.

“Feasibility of floating quay-wall system”, Sponsor: KORDI, Period: Jan 2009 ~ Jan 2010 (Exclusive Contributor)
• Successful comparative study against experiment for 3-body system


Other Funded Projects (Exclusive Contributor)

Design of breakwater system, design of mooring system for wave energy converter, global performance of various types of caissons.

Houston Offshore Engineering

Riser Engineer

*RPSEA 2014 Project: Methodology and Algorithm Development for the Evaluation of Ultra-deepwater or Arctic Floating Platform Performance under Hazardous Sea Conditions
*Consulted on nonlinear wave loads in Flexcom Rise Analysis
*FE-based mooring-riser analysis tool development
* Part-time (20 hrs/week)

Numerical Analysis of a Floating Harbor System and Comparison with Experimental Results

Texas A&M University

Numerical Analysis of a Floating Harbor System and Comparison with Experimental Results

Texas A&M University

Numerical Analysis of a Floating Harbor System and Comparison with Experimental Results

Texas A&M University

Hydro-elastic Dynamic Analysis of Large-scale Flexible Offshore Platforms

The 22nd International Offshore and Polar Engineering Conference

Numerical Analysis of a Floating Harbor System and Comparison with Experimental Results

Texas A&M University

Hydro-elastic Dynamic Analysis of Large-scale Flexible Offshore Platforms

The 22nd International Offshore and Polar Engineering Conference

THREE-DIMENSIONAL HYDROELASTIC DYNAMIC ANALYSES INCLUDING TORSION FOR A LARGE FLOATING PLATFORM IN FREQUENCY AND TIME DOMAINS

The ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering

(accepted in Hydoelasticity Session of Professor Emeritus J. Randolph Paulling Honoring Symposium)

Numerical Analysis of a Floating Harbor System and Comparison with Experimental Results

Texas A&M University

Hydro-elastic Dynamic Analysis of Large-scale Flexible Offshore Platforms

The 22nd International Offshore and Polar Engineering Conference

THREE-DIMENSIONAL HYDROELASTIC DYNAMIC ANALYSES INCLUDING TORSION FOR A LARGE FLOATING PLATFORM IN FREQUENCY AND TIME DOMAINS

The ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering

(accepted in Hydoelasticity Session of Professor Emeritus J. Randolph Paulling Honoring Symposium)

Hydroelastic Analysis and Statistical Assessment of Flexible Offshore Platforms

International Journal of Offshore and Polar Engineering

Recently, various types of flexible offshore structures, such as floating offshore airports and bridges, multiple connected floating breakwaters, and wind/wave energy converters, have been proposed. When designing such large-scale flexural floating structures, a complete coupled hydroelastic theory, including the floating structures’ deformation and their interactions, needs to be developed; that is, a more complete diffraction/radiation/hydrostatic/inertia-analysis tool, including all the essential elastic modes, has to be used for more reliable dynamic analysis. Such a hydroelastic theory and the numerical tool have been developed in the frequency domain. The developed numerical analysis is applied to a barge-type floating elastic body with various bending stiffness after convergence tests against the number of high-order elements and elastic modes. Fully-coupled interactions among elastic motions, 6-DOF (degree of freedom) rigid-body motions, and diffracted and radiated waves are solved for a wide range of wave frequencies and the corresponding RAOs (response amplitude operators) are achieved. The elastic-mode RAOs are compared against those obtained from an independently developed time-domain program for verification purposes. Subsequently, distributions of shear forces and bending moments are achieved on the basis of the balance of inertia, restoring loadings, and hydrodynamic loadings. The stress resultants are also verified against the independently developed time-domain program and a plate theory-based calculation. The contributions of constituent components for the shear forces and bending moments are also compared. By using the frequency-domain results, how to estimate the statistical maximum shear force and bending moment along the sections of the barge in irregular waves is explained by two different approaches. In both dynamic and structural analyses, the resonance phenomena for elastic modes are investigated and discussed.

Numerical Analysis of a Floating Harbor System and Comparison with Experimental Results

Texas A&M University

Hydro-elastic Dynamic Analysis of Large-scale Flexible Offshore Platforms

The 22nd International Offshore and Polar Engineering Conference

THREE-DIMENSIONAL HYDROELASTIC DYNAMIC ANALYSES INCLUDING TORSION FOR A LARGE FLOATING PLATFORM IN FREQUENCY AND TIME DOMAINS

The ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering

(accepted in Hydoelasticity Session of Professor Emeritus J. Randolph Paulling Honoring Symposium)

Hydroelastic Analysis and Statistical Assessment of Flexible Offshore Platforms

International Journal of Offshore and Polar Engineering

Recently, various types of flexible offshore structures, such as floating offshore airports and bridges, multiple connected floating breakwaters, and wind/wave energy converters, have been proposed. When designing such large-scale flexural floating structures, a complete coupled hydroelastic theory, including the floating structures’ deformation and their interactions, needs to be developed; that is, a more complete diffraction/radiation/hydrostatic/inertia-analysis tool, including all the essential elastic modes, has to be used for more reliable dynamic analysis. Such a hydroelastic theory and the numerical tool have been developed in the frequency domain. The developed numerical analysis is applied to a barge-type floating elastic body with various bending stiffness after convergence tests against the number of high-order elements and elastic modes. Fully-coupled interactions among elastic motions, 6-DOF (degree of freedom) rigid-body motions, and diffracted and radiated waves are solved for a wide range of wave frequencies and the corresponding RAOs (response amplitude operators) are achieved. The elastic-mode RAOs are compared against those obtained from an independently developed time-domain program for verification purposes. Subsequently, distributions of shear forces and bending moments are achieved on the basis of the balance of inertia, restoring loadings, and hydrodynamic loadings. The stress resultants are also verified against the independently developed time-domain program and a plate theory-based calculation. The contributions of constituent components for the shear forces and bending moments are also compared. By using the frequency-domain results, how to estimate the statistical maximum shear force and bending moment along the sections of the barge in irregular waves is explained by two different approaches. In both dynamic and structural analyses, the resonance phenomena for elastic modes are investigated and discussed.

Time-domain Hydro-elastic dynamic analysis of a large floating body including second-order wave loads

The 28th International Workshop on Water Waves and Floating Bodies

Numerical Analysis of a Floating Harbor System and Comparison with Experimental Results

Texas A&M University

Hydro-elastic Dynamic Analysis of Large-scale Flexible Offshore Platforms

The 22nd International Offshore and Polar Engineering Conference

THREE-DIMENSIONAL HYDROELASTIC DYNAMIC ANALYSES INCLUDING TORSION FOR A LARGE FLOATING PLATFORM IN FREQUENCY AND TIME DOMAINS

The ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering

(accepted in Hydoelasticity Session of Professor Emeritus J. Randolph Paulling Honoring Symposium)

Hydroelastic Analysis and Statistical Assessment of Flexible Offshore Platforms

International Journal of Offshore and Polar Engineering

Recently, various types of flexible offshore structures, such as floating offshore airports and bridges, multiple connected floating breakwaters, and wind/wave energy converters, have been proposed. When designing such large-scale flexural floating structures, a complete coupled hydroelastic theory, including the floating structures’ deformation and their interactions, needs to be developed; that is, a more complete diffraction/radiation/hydrostatic/inertia-analysis tool, including all the essential elastic modes, has to be used for more reliable dynamic analysis. Such a hydroelastic theory and the numerical tool have been developed in the frequency domain. The developed numerical analysis is applied to a barge-type floating elastic body with various bending stiffness after convergence tests against the number of high-order elements and elastic modes. Fully-coupled interactions among elastic motions, 6-DOF (degree of freedom) rigid-body motions, and diffracted and radiated waves are solved for a wide range of wave frequencies and the corresponding RAOs (response amplitude operators) are achieved. The elastic-mode RAOs are compared against those obtained from an independently developed time-domain program for verification purposes. Subsequently, distributions of shear forces and bending moments are achieved on the basis of the balance of inertia, restoring loadings, and hydrodynamic loadings. The stress resultants are also verified against the independently developed time-domain program and a plate theory-based calculation. The contributions of constituent components for the shear forces and bending moments are also compared. By using the frequency-domain results, how to estimate the statistical maximum shear force and bending moment along the sections of the barge in irregular waves is explained by two different approaches. In both dynamic and structural analyses, the resonance phenomena for elastic modes are investigated and discussed.

Time-domain Hydro-elastic dynamic analysis of a large floating body including second-order wave loads

The 28th International Workshop on Water Waves and Floating Bodies

Time-Domain Hydroelastic Simulations and Structural Analyses

The 23rd International Offshore and Polar Engineering Conference

Numerical Analysis of a Floating Harbor System and Comparison with Experimental Results

Texas A&M University

Hydro-elastic Dynamic Analysis of Large-scale Flexible Offshore Platforms

The 22nd International Offshore and Polar Engineering Conference

THREE-DIMENSIONAL HYDROELASTIC DYNAMIC ANALYSES INCLUDING TORSION FOR A LARGE FLOATING PLATFORM IN FREQUENCY AND TIME DOMAINS

The ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering

(accepted in Hydoelasticity Session of Professor Emeritus J. Randolph Paulling Honoring Symposium)

Hydroelastic Analysis and Statistical Assessment of Flexible Offshore Platforms

International Journal of Offshore and Polar Engineering

Recently, various types of flexible offshore structures, such as floating offshore airports and bridges, multiple connected floating breakwaters, and wind/wave energy converters, have been proposed. When designing such large-scale flexural floating structures, a complete coupled hydroelastic theory, including the floating structures’ deformation and their interactions, needs to be developed; that is, a more complete diffraction/radiation/hydrostatic/inertia-analysis tool, including all the essential elastic modes, has to be used for more reliable dynamic analysis. Such a hydroelastic theory and the numerical tool have been developed in the frequency domain. The developed numerical analysis is applied to a barge-type floating elastic body with various bending stiffness after convergence tests against the number of high-order elements and elastic modes. Fully-coupled interactions among elastic motions, 6-DOF (degree of freedom) rigid-body motions, and diffracted and radiated waves are solved for a wide range of wave frequencies and the corresponding RAOs (response amplitude operators) are achieved. The elastic-mode RAOs are compared against those obtained from an independently developed time-domain program for verification purposes. Subsequently, distributions of shear forces and bending moments are achieved on the basis of the balance of inertia, restoring loadings, and hydrodynamic loadings. The stress resultants are also verified against the independently developed time-domain program and a plate theory-based calculation. The contributions of constituent components for the shear forces and bending moments are also compared. By using the frequency-domain results, how to estimate the statistical maximum shear force and bending moment along the sections of the barge in irregular waves is explained by two different approaches. In both dynamic and structural analyses, the resonance phenomena for elastic modes are investigated and discussed.

Time-domain Hydro-elastic dynamic analysis of a large floating body including second-order wave loads

The 28th International Workshop on Water Waves and Floating Bodies

Time-Domain Hydroelastic Simulations and Structural Analyses

The 23rd International Offshore and Polar Engineering Conference

Offloading From Both Sides of a Super-container Ship to Land and Floating Harbor Predicted vs. Experimental Results

The 20th International Offshore and Polar Engineering Conference

Numerical Analysis of a Floating Harbor System and Comparison with Experimental Results

Texas A&M University

Hydro-elastic Dynamic Analysis of Large-scale Flexible Offshore Platforms

The 22nd International Offshore and Polar Engineering Conference

THREE-DIMENSIONAL HYDROELASTIC DYNAMIC ANALYSES INCLUDING TORSION FOR A LARGE FLOATING PLATFORM IN FREQUENCY AND TIME DOMAINS

The ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering

(accepted in Hydoelasticity Session of Professor Emeritus J. Randolph Paulling Honoring Symposium)

Hydroelastic Analysis and Statistical Assessment of Flexible Offshore Platforms

International Journal of Offshore and Polar Engineering

Recently, various types of flexible offshore structures, such as floating offshore airports and bridges, multiple connected floating breakwaters, and wind/wave energy converters, have been proposed. When designing such large-scale flexural floating structures, a complete coupled hydroelastic theory, including the floating structures’ deformation and their interactions, needs to be developed; that is, a more complete diffraction/radiation/hydrostatic/inertia-analysis tool, including all the essential elastic modes, has to be used for more reliable dynamic analysis. Such a hydroelastic theory and the numerical tool have been developed in the frequency domain. The developed numerical analysis is applied to a barge-type floating elastic body with various bending stiffness after convergence tests against the number of high-order elements and elastic modes. Fully-coupled interactions among elastic motions, 6-DOF (degree of freedom) rigid-body motions, and diffracted and radiated waves are solved for a wide range of wave frequencies and the corresponding RAOs (response amplitude operators) are achieved. The elastic-mode RAOs are compared against those obtained from an independently developed time-domain program for verification purposes. Subsequently, distributions of shear forces and bending moments are achieved on the basis of the balance of inertia, restoring loadings, and hydrodynamic loadings. The stress resultants are also verified against the independently developed time-domain program and a plate theory-based calculation. The contributions of constituent components for the shear forces and bending moments are also compared. By using the frequency-domain results, how to estimate the statistical maximum shear force and bending moment along the sections of the barge in irregular waves is explained by two different approaches. In both dynamic and structural analyses, the resonance phenomena for elastic modes are investigated and discussed.

Time-domain Hydro-elastic dynamic analysis of a large floating body including second-order wave loads

The 28th International Workshop on Water Waves and Floating Bodies

Time-Domain Hydroelastic Simulations and Structural Analyses

The 23rd International Offshore and Polar Engineering Conference

Offloading From Both Sides of a Super-container Ship to Land and Floating Harbor Predicted vs. Experimental Results

The 20th International Offshore and Polar Engineering Conference

Safety of Caisson Transport on a Floating Dock

The 21st International Offshore and Polar Engineering Conference

Numerical Analysis of a Floating Harbor System and Comparison with Experimental Results

Texas A&M University

Hydro-elastic Dynamic Analysis of Large-scale Flexible Offshore Platforms

The 22nd International Offshore and Polar Engineering Conference

THREE-DIMENSIONAL HYDROELASTIC DYNAMIC ANALYSES INCLUDING TORSION FOR A LARGE FLOATING PLATFORM IN FREQUENCY AND TIME DOMAINS

The ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering

(accepted in Hydoelasticity Session of Professor Emeritus J. Randolph Paulling Honoring Symposium)

Hydroelastic Analysis and Statistical Assessment of Flexible Offshore Platforms

International Journal of Offshore and Polar Engineering

Recently, various types of flexible offshore structures, such as floating offshore airports and bridges, multiple connected floating breakwaters, and wind/wave energy converters, have been proposed. When designing such large-scale flexural floating structures, a complete coupled hydroelastic theory, including the floating structures’ deformation and their interactions, needs to be developed; that is, a more complete diffraction/radiation/hydrostatic/inertia-analysis tool, including all the essential elastic modes, has to be used for more reliable dynamic analysis. Such a hydroelastic theory and the numerical tool have been developed in the frequency domain. The developed numerical analysis is applied to a barge-type floating elastic body with various bending stiffness after convergence tests against the number of high-order elements and elastic modes. Fully-coupled interactions among elastic motions, 6-DOF (degree of freedom) rigid-body motions, and diffracted and radiated waves are solved for a wide range of wave frequencies and the corresponding RAOs (response amplitude operators) are achieved. The elastic-mode RAOs are compared against those obtained from an independently developed time-domain program for verification purposes. Subsequently, distributions of shear forces and bending moments are achieved on the basis of the balance of inertia, restoring loadings, and hydrodynamic loadings. The stress resultants are also verified against the independently developed time-domain program and a plate theory-based calculation. The contributions of constituent components for the shear forces and bending moments are also compared. By using the frequency-domain results, how to estimate the statistical maximum shear force and bending moment along the sections of the barge in irregular waves is explained by two different approaches. In both dynamic and structural analyses, the resonance phenomena for elastic modes are investigated and discussed.

Time-domain Hydro-elastic dynamic analysis of a large floating body including second-order wave loads

The 28th International Workshop on Water Waves and Floating Bodies

Time-Domain Hydroelastic Simulations and Structural Analyses

The 23rd International Offshore and Polar Engineering Conference

Offloading From Both Sides of a Super-container Ship to Land and Floating Harbor Predicted vs. Experimental Results

The 20th International Offshore and Polar Engineering Conference

Safety of Caisson Transport on a Floating Dock

The 21st International Offshore and Polar Engineering Conference

Hydrodynamic Interactions between a Container Ship and Multiple Mobile Harbors

The 21st International Conference on Advances in Structural Engineering and Mechanics