학술논문
Structural Safety of Nozzle Plate using Simulation
이용수 19
- 영문명
- 시뮬레이션을 이용한 노즐플레이트의 구조안전성
- 발행기관
- 한국산업경영시스템학회
- 저자명
- Jong Yun Jung(정종윤) Heesung Park(박희성) Joon-Seob Kim(김준섭)
- 간행물 정보
- 『산업경영시스템학회지』제41권 제3호, 186~193쪽, 전체 8쪽
- 주제분류
- 경제경영 > 경영학
- 파일형태
- 발행일자
- 2018.09.30
4,000원
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국문 초록
Modern manufacturing industries is to produce both precise and robust mechanical parts without failure while they are in service. In order to prevent a part failure for its lifetime, a mechanical design for a part should be examined on a basis of mechanical simulation. A nozzle plate, being a key part in steam engines, changes flow directions of steam in a turbine used in power plant. This paper is to the design and test for part safety and durability. Currently, nozzle plates are fabricated by welding nozzles to their plates. Welding causes some defects on the used materials while they are being manufactured. Another major defect is un-even pitches between welded nozzles. Welding causes phase changes because of high melting temperature of metal. This leads to decay on the welding spots, which weakens their structural strength and then, may lead to early damages on mechanical structures. This research proposes assembly-typed nozzle plate without welding. From the beginning, nozzle and plate are designed for insertion-typed assembly. Nozzle head and foot are designed in accordance with the grooves on outer ring and inner ring of a plate to make mating surfaces. Then the nozzle plate should be proved for structural and fatigue safety before they are put in manufacturing. This research adopts commercial softwares for modeling and mechanical simulation. The test result shows that the design with smaller mating area and deeper insertion produces higher safety in terms of structure and durability. From the conclusion, this paper proposes the assembly-typed nozzle plate to replace the welding typed.
영문 초록
목차
1. 서 론
2. 노즐플레이트 설계 및 모델링
3. 노즐플레이트 구조해석
4. 노즐플레이트의 피로해석
5. 구조안전성 해석 및 결과 분석
6. 결 론
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