Stress analysis of chimney with openings

• Main Authors: Lin, Feng-sheng, 林峰生
• Other Authors: Gin-Show Liou
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/97819421594118757738

碩士 === 國立交通大學 === 土木工程學系研究所 === 85 === The main purpose of the paper is to investigate the stress concent ration effect of chimney structure with openings . Plate element is em ployed to build models for analysis of chimney with no opening, single op ening and two openings. The commercial F.E.M. Package, ANSYS 5.1, is used to analyze these models in this research.First, the stresses of chimneys w ith no opening and single opening are studied. Second, the chimneys with di fferent angle between two openings are analyzed in order to compare the s tresses with that of the chimney with no opening. Finally, the two openings and the shell between the two openings are treated as a big opening by eli minate the shell, and then the stress concentration factor is compared to that with two openings in order to obtain the corresponding critical angle b etween the two openings. The correspondent critical angle is found for vary ing opening angle. Hence , some modifications for designing chimney shell are recommended in accordance with the results.