Abstract

For dynamic analysis of flexible structures, classical linear modeling has been widely used due to its several good aspects. However, it was found that the modeling often lost its accuracy. So, it is important to know the valid range of the modeling before it is used. more complicated modelings are needed to obtain reliable results only outside the valid range of the classical linear modeling. In this study, some rigid body motions of flexible structures which lead to the failure of the classical linear modeling are investigated. Hybrid deformation variable modeling, which is proved to be accurate in previous studies, is used to figure out the valid range of the classical linear modeling through numerical examples.

Keywords

• Flexible Structures;
• Dynamic Analysis;
• Classical Linear Modeling;
• Rigid Body Motion;
• Stiffness Variation Effect

• 유연 구조물;
• 동적해석;
• 고전적 선형모델링;
• 강체운동;
• 강성변화효과;