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Influence of input variables on the unitary deformation experienced in pipes subjected to the action of lateral loads
Influencia de las variables de entrada en la deformación unitaria evidenciada en tuberías sometidas a la acción de cargas laterales
DOI:
https://doi.org/10.15446/dyna.v91n232.111471Palabras clave:
pipelines; bending moment; risk assessment; integrity pipeline (en)tuberías de transporte; momento flector; evaluación de riesgo; integridad de tuberías (es)
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The hydrocarbon transportation industry uses extensive pipeline networks subject to complex loading conditions. The finite element analysis (FEA) has proven to be effective in simulating the deformation behavior in these pipelines, which assists in the assessment of their integrity and risks. In this work, a model developed using finite elements is proposed to analyze the behavior of API 5L Gr B carbon steel pipes, subject to internal pressure and lateral loads. The model is validated through uniaxial tensile and four-point bending tests. In addition, parametric analysis is carried out considering variables such as diameter, lateral load, and distance between supports. The objective is to identify which one of these variables has the most influence in the unit strain. The results indicate that the unit strain obtained from the numerical model agrees with the experimental tests. Furthermore, it is concluded that the diameter is the influential parameter.
La industria del transporte de hidrocarburos utiliza extensas redes de tuberías sometidas a condiciones de carga complejas. El análisis por elementos finitos ha demostrado ser efectivo para simular el comportamiento de deformación en estas tuberías, lo que ayuda en la evaluación de su integridad y riesgos. En este trabajo, se propone un modelo desarrollado mediante elementos finitos para analizar el comportamiento de tuberías de acero al carbono API 5L Gr B, sujetas a presión interna y cargas laterales. El modelo se valida mediante pruebas experimentales de tensión y flexión de cuatro puntos. Además, se realiza análisis paramétrico considerando variables como diámetro, la carga lateral y distancia entre soportes. El objetivo es identificar cuál de estas variables influye más en la deformación unitaria. Los resultados indican que la deformación unitaria obtenida del modelo numérico concuerda con las pruebas experimentales. Además, se concluye que el diámetro es el parámetro influyente.
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