Elastic Strength in Thick-Walled Cylinders with Radial and Offset Oblique Cross Bores
| International Journal of Mechanical Engineering |
| © 2025 by SSRG - IJME Journal |
| Volume 12 Issue 4 |
| Year of Publication : 2025 |
| Authors : PK Nziu |
10.14445/23488360/IJME-V12I4P101
How to Cite?
PK Nziu, "Elastic Strength in Thick-Walled Cylinders with Radial and Offset Oblique Cross Bores," SSRG International Journal of Mechanical Engineering, vol. 12, no. 4, pp. 1-10, 2025. Crossref, https://doi.org/10.14445/23488360/IJME-V12I4P101
Abstract:
This research aims to investigate the effects of radial and offset oblique cross bores on elastic stress concentration factors in thick-walled cylinders with thickness ratios between 1.4 and 3.0 using the finite element analysis (FEA) method. This research was necessitated by using a high magnitude of safety factors ranging from 2 to 20 in the design and construction of high-pressure vessels, resulting in increased use of materials, low operating pressures and efficiencies. A total of 140 finite element analysis models were created and analyzed using Abaqus software. Generally, it was observed that most of the studied cylinders had their lowest SCF magnitudes at oblique angles of 0° and highest at 60°. The lowest and highest SCF values were noted at K = 1.5 and 3.0, with magnitudes of 1.511 and 1.98 for Tresca and 1.596 and 2.223 for Von Mises, respectively. The location with the lowest SCF occurred when offset cross bores were positioned radially in a non-inclined position. The difference between Tresca and Von Mises elastic SCF magnitudes ranged from 5.63% to 13.1%. Meanwhile, the yielding pressure increased with an increase in thickness ratio ranging from 39.24 to 56.12 and 41.86 to 57.69 for Tresca and Von Mises theories, respectively.
Keywords:
Cross bores, Elastic stresses, Stress concentration factor, Thick cylinders.
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