The purpose of this study is to evaluate a structural integrity of plate type heat exchanger considering the behavior of the global structure and is to perform finite element analysis and code calculation as the way to verify the structural integrity.
Recently, the research on plate type heat exchanger has been focused on performance improvement considering the shape and size, however, this study is going to establish the criteria for the supporting structure of the plate type heat exchanger integrity.
Structures under internal pressure flat plate, fixed frame and maximum bolt load were evaluated a structural integrity by performing code calculation The advantages of the plate type heat exchanger is that it is easy to assemble and disassemble, which is up to 1.5 times the actual weight of the evaluation of the structural integrity in carrying bar of body part. The allowable bending stress of the beam type structures which carrying bar and support column is applied to 0.66Sy and flat type like a base plate is applied to 0.6Sy. In addition, the maximum deformation allows 6 inch per 100ft.
In this study, the pre-processing module using Visual Basic and ANSYS APDL has been proposed to save time in FE modeling and analysis to improve an accuracy.1. 서론
1.1 연구 배경
1.2 연구 동향
1.3 연구 내용 및 목적
2. 유한요소해석의 이론적 배경
2.1 탄성유한요소해석 이론
2.2 모드해석 이론
2.3 응답 스펙트럼 해석이론
3. 해석 대상 판형 열교환기
3.1 형상
3.2 설계 조건
3.3 재료 물성 및 허용응력
4. 건전성 평가
4.1 코드 계산
4.1.1 고정 프레임 설계
4.1.2 앵커 볼트 설계
4.2 유한요소해석
4.2.1 유한요소모델 및 경계 조건
4.2.2 하중 조합
4.2.3 각 해석 결과 및 허용치 비교
5. 내진해석 평가
5.1 고유치 해석
5.1.1 유효질량 분석
5.2 응답 스펙트럼 해석
5.2.1 응답 스펙트럼
5.2.2 응답 스펙트럼 해석 결과 및 볼트 반력 산출 방법
6. 건전성 평가 모듈 개발
6.1 자동화 프로그램 개발
6.1.1 유한요소해석의 자동화
6.2 전체 자동화 프로그램의 소개
6.2.1 화면구성
7. 결론
참고문헌
APPENDIX
