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Winkler 지반과 비틀림 각이 고려된 축력을 받는 회전하는 보의 동적 해석Dynamic Analysis of Pre-Twisted Spinning Beams subjected to Axial Force considering Winkler Foundation
- Other Titles
- Dynamic Analysis of Pre-Twisted Spinning Beams subjected to Axial Force considering Winkler Foundation
- Issue Date
- Nov-2017
- Publisher
- 대한기계학회
- Keywords
- Hybrid Deformation Variables(복합 변형 변수); Time-Dependent Boundary Conditions(시간의 함수인 경계조건); Winkler Foundation(Winkler 지반)
- Citation
- 대한기계학회 2017년도 학술대회, pp.847 - 849
- Indexed
- OTHER
- Journal Title
- 대한기계학회 2017년도 학술대회
- Start Page
- 847
- End Page
- 849
- Abstract
- In this paper, a dynamic analysis of spinning beam subjected to axial forces considering Winkler foundation and Pretwisted angle was performed. A typical example of a structure that spinning under the axial force is drilling system, since the bending stiffness is decreased by axial force, it is necessary to develop and study a structural dynamics model that can understand the dynamic characteristics. In this study, a beam model to express the effect of reducing the bending stiffness by axial force is modeled by the Hybrid Deformation Variable Modeling Method and a Moving Winkler Foundation model is used to express the stiffness distribution of workpiece that varies with time. Numerical results show that the natural frequency abruptly drops at the point of contact between the beam structure and the workpiece
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