Stress Analysis and Structure Optimization for the Opening Flat Cover of Pressure Vessels

Abstract:

According to the results of finite element analysis (FEA), when the diameter of opening of the flat cover is no more than 0.5D (d≤0.5D), there is obvious stress concentration at the edge of opening, but only existed within the region of 2d. Increasing the thickness of flat covers could not relieve the stress concentration at the edge of opening. It is recommended that reinforcing element being installed within the region of 2d should be used. When the diameter of openings is larger than 0.5D (d>0.5D), conical or round angle transitions could be employed at connecting location, with which the edge stress decreased remarkably. However, the primary stress plus the secondary stress would be valued by 3[σ].

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 3253-3258
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.3253
• Online since: June 2012
• Authors: Jun Jian Xiao
• Keywords: Finite Element Analysis (FEA), Flat Cover, Opening, Reinforcement, Stress Concentration

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