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Free Vibration and Dynamic Stability of the Axially Moving Continuum with Time-varying Length

초록

The time-dependent frequency and energy of free vibration of the spagetti problem, that is the axially moving continuum with time-varying length, are investigated. Exact expressions for the natural frequency and time-varying vibration energy are derived by dealing with traveling waves. The vibration period increases with increasing length, but the free vibration energy decreases. When the string undergoes retraction, the vibration energy increases with time. The free response of the time-varying string is represented by superposing two traveling waves.

키워드

Spagetti Problem(스파게티 문제)Axially Moving System(축방향 이동시스템)Traveling Wave(진행파)Free Vibration (자유진동)Phase Closure Principle(폐위상 원리)Energy Reflection Coefficient(에너지 반사계수)Spagetti Problem(스파게티 문제)Axially Moving System(축방향 이동시스템)Traveling Wave(진행파)Free Vibration (자유진동)Phase Closure Principle(폐위상 원리)Energy Reflection Coefficient(에너지 반사계수)
제목
축방향으로 이동하며 길이가 변하는 연속체의 자유진동 및 동적 안정성
제목 (타언어)
Free Vibration and Dynamic Stability of the Axially Moving Continuum with Time-varying Length
저자
사재천이승엽이민형
발행일
2002-04
저널명
한국소음진동공학회논문집
12
4
페이지
2 ~ 279