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Sungsoo Na
Name
Sungsoo Na | Professor
Tel
+82-2-3290-3370
Fax
+82-2-926-9290
E-mail
nass@korea.ac.kr
address
Department of Mechanical Engineering Korea University Anam-dong Sungbuk-gu Seoul 136-713 Korea
Education
1986 B.S. Mechanical Engineering, Korea University, Korea
1988 M.S. Mechanical Engineering, Korea University, Korea
1997 Ph.D. Engineering Science and Mechanics, VA Tech(VPI), USA
Lab.
BioNanoMechanics Lab.
Research on Protein Vibration and Dynamical Characteristics
Protein dynamics has played a pivotal role in understanding the biological function of protein. For investigation of such dynamics, normal mode analysis(NMA) has been broadly employed with atomistic model and/or coarse-grained models such as elastic network model(ENM). For large protein complexes, NMA with even ENM encounters the expensive computational process. We develop reduction methods based on structural dynamics methods such as, condensation, component mode synthesis, etc. These methods give high accuracy and efficiency as original ENM. On the basis of these methods, conformational change problems, and mechanical behavior problems can be approached.
Research on cancer cell detection technology using AFM
In this research, method to effectively detect cancer cell using Atomic Force Microscope and nanobead is investigated. Observation of nanobead distribution in nano-scale is limited in other devices, so AFM(Atomic Force Microscopy) is applied and nanobead is used as probe to detect biological substances and behavior in increase of surface area is observed.
Single molecule experiment using AFM
In this experiment, nano-scale mechanical behavior is investigated by single molecule experiment. Also simulated values of biological molecules and our lab's protein are compared to investigate characteristics of single molecuels. These research contribute largely to nano-bio area in observing mechanical characteristics generated by biomolecule behavior and related technologies.
Automobile seat comfort evaluation via fuzzy model
The primary goal of our research is developing computational model to evaluate performance. Automobile seat comforts which are not only objective factors including a shape, stiffness, and vibration transmissibility of an automobile seat but also individual factors such as posture and anthropometry and subjective factors such as personal feeling, can be considered.
Fuzzy Model makes it possible to consider the human feeling from a user’s point of view in evaluating automobile seat comfort.
MADYMO is suitable for analysis of human behavior in vertical vibrations.
5. Active vibration control of aerostructure
The next generation combat aircraft is likely to operate in more severe environmental conditions. As a result the structure will be subjected to the various external loads to cause the material fatigue, structural fracture and impair the precision of the mission.
To remove these critical problems, we use various optimal control strategies, robust estimation methodologies and methods of modify the structural property of the composite materials.
And our research is focused on to control the aeroelastic response of the advanced aircraft wing and the rotating turbine blade system which is consist of the composite thin-walled beam.
  • Analysis of the turbine blade which is described by pre-twisted composite thin-walled beam.
  • Analysis of the vibration properties of the aerostructure exposed excited force like the aeroelasticity and thermal load.
  • Apply the active controller by using LQG, SMC method and piezoelectric actuator at the tip of the rotating turbine blade and the aircraft wing.
  • Study on the vibration characteristics by structural properties of the composite thin-walled beam.
※ This is the international cooperation research with