Abstract
Pipelines are widely used in industry for transporting oil and gas. Dents are one of the most common mechanical damage to pipelines due to external factors and significantly affect the performance of the pipelines. A dent is a permanent deformation of the circular cross-section of the pipelines. In this paper, numerical simulation using finite element analysis on API 5L X52 pipelines subjected to denting by a spherical indenter was carried out to determine the distribution of Von-Mises stress and permanent deformation. The given load was between the yield strength and ultimate strength of API 5L X52. The effect of indenter diameter and indenter displacement was studied. The results show that the indenter diameter and indenter displacement affect the value and area distribution of Von-Mises stress and permanent deformation.
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