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Post-buckling analysis using a load-displacement control

하중과 변위의 동시제어에 의한 좌굴후 현상해석

  • Kwon, Y.D. (Dept.of Mechanical Engineering, Kyungpook National University) ;
  • Lim, B.S. (Agency for Defense Development) ;
  • Park, C. ;
  • Choi, J.M. (Korea Institute of Machinery and Materials)
  • 권영두 (경북대학교 기계공학부) ;
  • 임범수 (국방과학연구소) ;
  • 박철 (대우기전공업(주) 기술연구소) ;
  • 최진민 (한국기계연구원)
  • Published : 1997.11.01

Abstract

A new load/displacement parameter method is developed for the cases that loads are applied to one or more points, and displacements of a structure are controlled at one or more points sinultaneously. The procedure exploits a generalized Riks method, which utilizes load/displacement parameters as scaling factors in order to analyze the post-buckling phenomena including snap-through or snap-back. A convergence characteristic is improved by employing new relaxation factors in incremental displacement parameter, particularly at the region where exhibits severe numerical instability. The improved performance is illustrated by means of numerical example.

Keywords

Post-bucking Phenomena;Snap-Back Phenomena;Incremental Load Parameter;Incremental Displacement Parameter;Relaxation Factor;Relaxation Method