유한요소해석에 기초한 대형 플랜트 계통의 대구경 유체 배관용 격판의 최적 설계
Optimal Design of Baffle Plate for Large-diameter Fluid Piping in Large Plant Systems based on Finite Element Analysis
This paper is a study on the optimal design of a 3,100 mm diameter baffle plate installed in large-diameter piping of large-scale plants using finite element (FE) analysis. Since classical plate theory requires a thickness of 163 mm for an unreinforced plate, which is unrealistic, a grid-type stiffener was adopted. After verifying that the maximum stress error was within 2.35% by comparing the shell element analysis model with the theoretical solution, a parametric analysis was performed on eight design options (BP1–BP8) and four boundary condition models (conditions A–D) under a design pressure of 15 bar and combined hydrostatic load. As a result of the evaluation based on the effective deformation criterion (1.8275 mm), the original design option (BP1) was found to be unsuitable, and BP8 with a baffle plate thickness of 50 mm, a stiffener thickness of 40 mm, and the height of 360 mm, was derived as the optimal option satisfying the criterion.
목차
Abstract 1. 서론 2. 설계조건 및 이론적 검토 2.1 격판의 구조와 설계 조건 2.2 격판의 이론적 두께 산정 2.3 직사각형 보강재가 부착된 단위격자 평판 이론 응력 3. 유한요소 모델의 유효성 검증 3.1 테두리 보강형 단위격자 평판 모델 3.2 아이(I)자 보강형 단위격자 평판 모델 4. 유한요소해석에 기초한 최적의격판 형상 선정 4.1 유한요소 모델 및 경계조건 4.2 격판의 유한요소해석 및 유효도 평가 5. 결론 후기 References