초기 인장력을 고려한 파이프계의 자유진동 시뮬례이션

• 영문명: A Simulation for the Free Vibration of Pipe Systems Considering Initial Tension
• 발행기관: 한국시뮬레이션학회
• 저자명: 최명진(Myung Jin Choi) 김재영(Jae Young Kim)
• 간행물 정보: 『한국시뮬레이션학회 논문지』제7권 제2호, 105~114쪽, 전체 10쪽
• 주제분류: 공학 > 기타공학
• 파일형태: PDF
• 발행일자: 1998.12.31

영문 초록

Using finite elements, a simulation is performed for the pipe systems to investigate free vibrational characteristics, that is natural frequencies, considering the initial tension due to the velocity and the pressure of the inside fluid flow. To confirm the program developed in this study, the results are compared with the results of commercial software ANSYS. When the initial tension is neglected in curved pipes, the natural frequencies are reduced as flow velocity increases, and the rapid decreases of the natural frequencies took place. However, when the initial tension is taken into account, the natural frequencies are not changed with the change of the flow velocity. In free vibrational simulation of pipe systems, it is necessary to calculate the initial state force due to the velocity and the pressure of the fluid flow from the equilibrium first, then the force should be included in the equation of motion of the systems to get more accurate natural frequencies.

목차

1. 서론

2. 운동방정식

3. 유한요소 방정식

4. 시뮬레이션 결과

5. 결론

참고문헌