STABILITY STUDY OF NONLINEAR BENDING RESPONSE ANALYSIS ON A COLUMN MEMBER WITH PARTIAL SOFTENING OF M-Φ CURVE

Abstract

Stability investigation of dynamic response analysis of nonlinear bending oscillation with softening of M-Φ curve, is dealt with in this paper.
One method which can stabilize the nonlinear response analysis under softening is proposed taking the balance between kinetic and internal histeretic energy into account. Numerical results of energy response and phase plane at the top of the column are compared with that of linearlized M-Φ curve method. And the comparison of dynamic nonlinear response between numerical simulation and experimental result is also shown.