메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색
질문

논문 기본 정보

자료유형
학술저널
저자정보
임종민 (KARI) 우성현 (KARI) 은희광 (KARI) 전종협 (KARI)
저널정보
한국소음진동공학회 한국소음진동공학회논문집 한국소음진동공학회논문집 제34권 제3호(통권 278호)
발행연도
2024.6
수록면
258 - 275 (18page)
DOI
10.5050/KSNVE.2024.34.3.258

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색
질문

초록· 키워드

오류제보하기
During the launch process, the launch vehicle and satellite are affected by transient dynamic loads, such as engine ignition or wind gusts and quasi-static load. To demonstrate that the spacecraft structure can withstand the loads of the launch environment, vibration tests were performed using the vibration facility. In the vertical vibration test, the spacecraft has a higher center of gravity at the mounting surface as it is large and heavy. This configuration generates high overturning moment resulting in unwanted cross-axis motion. To perform a successful test by preventing over-test or under-test, it is essential to control the excessive cross-axis movement. As per the noble test requirements from the launch vehicle and geostationary-satellite, KARI upgraded the vertical vibration system. Unlike off-the-shelf vibration systems, the large vertical vibration system is designed with 4 shakers, large head expander, peripheral hydraulic guidance system, and specially-designed seismic mass. Here, the development of components, assembly, and verification processes of a noble vertical vibration shaker system are described. First, a seismic mass of 300 t is constructed, which supports the static and dynamic loads during vibration test and supplies the load path for guidance system. A magnesium head expander of 3.25 m × 3.25 m is fabricated in Korea. The dynamic characteristics of the head expander are verified with modal testing and F.E. analysis. After finishing the installation, the verification test with a dummy structure is performed to confirm that the design requirements are satisfied. Additionally, ODS analysis is performed to know the modal characteristics of the shaker system. Finally, to demonstrate the effectiveness of the developed system compared to the single shaker system, the vibration test results are compared and analyzed.

목차

ABSTRACT
1. 서론
2. 제진 블록 제작
3. 마그네슘 헤드익스펜더 제작
4. 진동 가진기 검증 및 수직 가진 시스템 설치
5. 수직 가진 시스템 검증 및 특성 비교
6. 결론
References

참고문헌 (17)

참고문헌 신청

이 논문과 함께 이용한 논문

최근 본 자료

전체보기

댓글(0)

0

UCI(KEPA) : I410-151-24-02-089860797