Effect of Stress Concentration at Circular Hole Edge for Coating on Material Processing

Abstract:

Coating craft process is often used on the hole surface, thus it must affect the degree of the stress concentration near the hole edge. Airy stress function methodology is used to obtain the analytical stress solution for a plate with a small coating circular hole in the center and subjected to the uniaxial uniform tension in this paper. With the help of the finite element software MSC.Patran & Nastran, the K3alloy plate is numerically analyzed, and its coating material is a ZrO₂, and with the comparison of the acquired analytical solutions, it can be found that the numerical results coincide with the analytical ones very well. The results show that coating affects greatly the stress distribution near the hole edge, and the stress concentration factor in the coating increases with the coating thickness but decreases in the plate, and it increases with the shear modular ratio of the coating to the plate but decreases in the plate. The effect of the coating on the stress distribution near the hole and the stress concentration cannot be neglected.

• Periodical: Advanced Materials Research (Volumes 239-242)
• Pages: 558-562
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.239-242.558
• Online since: May 2011
• Authors: Bu Xi Bian, Yi Hua Liu
• Keywords: Analytical Solution, Circular Hole, Coating, Plate, Stress Concentration

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