다물체계의 자려진동 구현을 위한 마찰 모델링

다국어 초록 (Multilingual Abstract)

This paper presents a friction model to realize self-excited vibration of multi-body systems. The friction coefficient is modeled with a spline function in most commercial codes. Even if such a function resolves the problem of discontinuity in friction force, it cannot realize self-excited vibration phenomena. Furthermore, as the relative velocity approaches zero, the friction coefficient approaches zero with the conventional model. So, slip occurs when small force is applied to the system. To avoid these problems a new friction model is proposed in this study. With the new friction model, the self-excited vibration can be realized since the friction coefficient changes with the relative velocity. Furthermore, the slip phenomena could be reduced significantly with the proposed model.

참고문헌 (Reference)

1 William T. Thomson, "Theory of Vibration with Applications, 4-th edition" Prentice Hall 1998

2 Denny, M., "Stick-slip Motion: and Important Example of Self-excited Oscillation" 25 : 311-322, 2004

3 "RecurDyn manual (version6.2)"

4 Park, J. H., "Multibody Dynamic Analysis for Contacting Rigid Bodies" 24 (24): 411-420, 2000

5 Park, J. H., "Dynamic Analysis of Constrained Multibody Systems Using Partial Velocity Matrix" 23 (23): 861-870, 1999

6 Li, Y., "Bifurcation and Chaos in Friction-induced Vibration" 9 (9): 633-647, 2004