Publications

Thesis

  • Ph. D. thesis: "A Preconditioner for Schur Complement Matrices Based on Aggregation Multigrid Method in Linear Finite Element Analysis" Abstract
  • M.S. thesis: "A Study on Thermal Stress Analysis Using Enhanced Assumed Strain Elements" Abstract


Journals

2009

  • Jin Hwan Ko, et. al, "Finite macro-element based volume grid deformation for large moving boundary problems,'' Communication in Numerical Methods in Engineering, in press. (SCIE)
  • Jin Hwan Ko, Jee Woong Kim, Doyoung Byun, Soo Hyung Park, "Volume grid deformation code for numerical simulation of a flapping foil'', Journal of Mechanical Science and Technology, in press. (SCIE)
  • Si Bui Quang Tran, Doyoung Byun, Yong Hoon Yoo, Jihoon Kim, Jin Hwan Ko Jae Woo Lee, Ki Hyun Shin and Yung Hwan Byun, "Experimental and Numerical Study of Air Entrainment Between Web and Spirally Grooved Roller,'' ASME Transactions, Journal of tribology, Vol. 131, 2009. (SCI)
  • Doyoung Byun, Jongin Hong, Saputra, Jin Hwan Ko, Young Jong Lee, Hoon Cheol Park, Bong-Kyu Byun, Jennifer R. Lukes, "Wetting Characteristics of Insect Wing Surfaces," Journal of bionic engineering, in press, 2009. (SCIE)
  • Jaesung Eom, Jin Hwan Ko, and Byungchai Lee, "A macro plane triangle element from the individual element test,'' Finite elements in Analysis and Design, in press, 2009. (SCI)
  • Sung Nam Jung, Il-Ju Park, Jin Hwan Ko and  Chang-Wan Kim, "Theory of thin-walled, pretwisted composite beams with elastic couplings'' Advanced Composite Materials,  in press, 2009. (SCIE)

2008

  • Jin Hwan Ko, Jee Woong Kim, Doyoung Byun and Soo Hyung Park, "Volume grid deformation code for computational fluid dynamics of moving boundary problem,'' The Korean Society for Aeronautical & Space Sciences, Vol. 36, No. 11, 1049-1055, Nov. 2008.
  • Jin Hwan Koand Byungchai Lee, "Aggregation Multigrid Method for Schur Complement System in FE Analysis of Continuum Elements,'' Structural engineering & mechanics, Vol.30, No. 4 467-480, Nov. 2008. [Link] (SCIE)
  • Jin Hwan Ko and Jaesung Eom, "Two-Level Preconditioner via a Rigid Body Based Aggregation for the Schur Complement System,'' Communication in Numerical Methods in Engineering , Published Online, DOI: 10.1002/cnm.1170, July 2008. [Link] (SCIE)
  • Jin Hwan Ko and Zhaojun Bai, "High Frequency Response Analysis via Algebraic Substructuring,'' International Journal of Numerical Method in Engineering, Vol. 76, No. 3, 295-313, Oct. 2008. [Link](SCI)
  • Jin Hwan Ko, Sung Nam Jung Do Young Byun and Zhaojun Bai, ``An algebraic substructuring using multiple shifts for eigenvalue computations,'' Journal of Mechanical Science and Technology, Vol. 22, pp. 440-449, 2008. [Link] (SCIE)

2007

  • Jin Hwan Ko and Do Young Byun "Interior eigenvalue computation using algebraic substructuring,'' Computational Structural Engineering Institute of Korea, Vol. 20, No. 6, 745-751, 2007.

2006

  • Jin Hwan Ko and Byungchai Lee, "Preconditioning Schur complement matrices based on an aggregation multigrid method for shell structures", Computers & Structures, Volume 84, Issues 29-30, pp. 1853-1865, Nov. 2006. [Link]  (SCI)

Before 2006

  • Jin Hwan Koand Byungchai Lee, "Study on Robustness of Incomplete Factorization using Preconditioning for Conjugate Gradient Method," KSME, A, vol. 27, no 2, pp. 276-284, 2003.  Abstract
  • Seungtae Yeo, Jin Hwan Ko, and Byungchai Lee, "Consistent thermal stress calculation by using a new approach of the enhanced assumed strain method," Computer methods in applied mechanics and Engineering, Vol. 188, No. 1-3, pp. 331-345, 2000.  [Link] (SCI)
  • Jin Hwan Ko and Byungchai Lee, "Development of a Quadrilateral Enhanced Assumed Strain Element for Efficient and Accurate Thermal stress Analysis," Korean Society of Mechanical Engineering (KSME), A, vol. 23, no 7, pp. 1205-1214, 1999. Abstract

In processing

  • Jin Hwan Ko, Doyoung Byun, Jeong Sam Han, "An efficient numerical solution for frequency response function of a micromechanical resonator array,'' Journal of Mechanical Science and Technology, in review
  • Jin Hwan Ko and Doyoung Byun, "Comparison of Numerical Solutions for Mid-Frequency Response Analysis of Finite Element Linear Systems ,'' Computers and structures, in review (SCI).
  • Tuyen Le Quang, Doyoung Byun, Saputra, Jin Hwan Ko and Hoon Choel Park, "Numerical Investigations of Aerodynamic Characteristics for a Hovering Coleopteran Insect with a Realistic Wing Kinematic Model, '' Journal of bionic engineering, in review. (SCIE)
  • Botir Sh. Usmonov and Jin Hwan Ko, "A Numerical Solution of Hereditary Equations with a Weakly Singular Kernel for Vibration Analysis of Viscoelastic Systems,'' Journal of sound and vibration, in review. (SCI)

In preparation

  • Jin Hwan Ko, Soo Hyung Park, Hyung Gun Kim, Doyoung Byun and Hoon Chel Park, "Application of fluid-solid interaction analysis to a deformable Flapping foil,'' Journal of Fluids and structures.
  • Tuyen Le Quang, Doyoung Byun, Young Hoon Yoo, Jin Hwan Ko and Hoon Choel Park, "Aerodynamic Performance of a Corrugated Beetle Hind Wing interacting with Elytron,'' Journal of experimental biology.
  • YongHoon Yoo, Doyoung Byun, Jihoon Kim, Jin Hwan Ko, Youngsun Hong, Hoon Chel Park and Yung Hwan Byun, "Study on Flapping of Coleopteran Insect using Particle Image Velocimetry (PIV),'' Chinese science bulletin.


Proceedings

2008

  • Tuyen Le Quang, Doyoung Byun, Young Hoon Yoo, Jin Hwan Ko, Won-Kap Kim and Hoon Choel Park, "Investigation of Beetle's Flight Considering Wing Corrugation,'' IEEE Robio 2008 conference.
  • Jin Hwan Ko, Jeong-Sam Han, Zhaojun Bai, "A substructuring based model order reduction for frequency response analysis of a micromechanical resonator array,'', 5-th CJK-OSM international conference, Korea, 2008.
  • Jee Woong Kim, Soo Hyung Park, Jin Hwan Ko, Il-Ju Park,  Sung Nam Jung, Yung Hoon Yu, Eugene Kim, and Jang Hyuk Kwon, "Hovering rotor computation including aero-elastic effects with an overlapped grid Navier-Stokes solver'' AIAA 2008 conference, Hawaii,USA.
  • Jin Hwan Koo, Jee Woong Kim, Soo Hyung Park, Tuyen Le Quang, and Doyoung Byun, "Volume grid deformation code for computational fluid dynamics of a flapping foil,'' KSME/BIO conference, Korea, 2008.
  • Jin Hwan Ko and Zhaojun Bai, "Algebraic substructuring with frequency sweep algorithm for mid-frequency response analysis,'' KSME/CAE conference, Korea 2008.

2007

  • Jin Hwan Ko, Zhaojun Bai, "An Algebraic Substructuring Method for High-Frequency Response Analysis of Micro-system,'' Proceeding of International conference on Computational Science, China, 2007
  • Zhaojun Bai, Jin Hwan Ko, "Algebraic Substructuring for Eigenvalue and Frequency Response Calculation", Proceeding of SIAM Conference on Computational Science and Eigineering, California, US, 2007
  • Usmonov Botir, Jin Hwan Ko, "Vibration Analysis of One-Dimensional Viscoelastic Structures'', Rotor Korea 2007, AHS specialists' International Conference, Korea, 2007.
  • Il Ju Park, Sung Nam Jung and Jin Hwan Ko, "Mixed Beam Approach for Structural Behavior of Initially Twisted, Thin-Walled Composite,'' Proceeding of 15th International Conference on Composite/Nano Eigineering, China, 2007.
  • Jin Hwan Ko and Zhaojun Bai, "A high efficient solver for high-Frequency response analysis of MEMS resonators,'' KSME spring conference, Korea 2007.

Before 2007

  • Jin Hwan Koand Byungchai Lee, "Study on the Relation between Ordering Methods and Linear Solvers", Proceeding of the KSME 2002 Joint Symposium, Abstract

 Reports

  • Jin Hwan Ko, "Development of Hybrid Method of Model Reduction and Substructuring Methods for Structural Dynamic Analysis of MEMS/NEMS", Technical Report M01-2005-000-10288-0, JULY, 2006 Abstract
  • Jin Hwan Ko, "Technique on the anlalysis of spot welding process using STRA-D Products", Weekly trend of technique, Vol. 1145, Full text