The use of flexible pipe in onshore applications is now commonplace; however, there is scarce information on the modes of failure that affect its mechanical integrity, so its application in a transmission systems is risky and should require further analysis. An experimental- numerical study was performed to observe changes in the mechanical response and failure modes in this type of pipes. Pipe was perforated at a working pressure of 30 kg/cm² (426.7 psi) to simulate experimentally the conditions generated when a hot tapping hole is illegally made to plunder petroleum products. It was found that the different pipe sections have a relatively low mechanical strength, especially the layer made of high density polyethylene. Tension and compression tests were carried out to obtain the appropriate technical data to perform static simulations, considering an external hole as the failure mechanism. After finite element modeling, it was found that flexible pipe presented an initial collapse in the HDPE inner layer at a pressure of 21.09 kg/cm² (300 psi), which coincided with the experimental collapse induced by hot tapping drilling. This type of damage had not been studied in flexible pipelines for onshore applications. The information provided is useful in making decisions for the proper materials selection involved in the transport of hydrocarbons onshore.

现在在陆上应用中使用挠性管已经很普遍了。然而，关于影响其机械完整性的故障模式的信息很少，因此其在传动系统中的应用存在风险，需要进一步分析。进行了一项实验数值研究，以观察此类管道的机械响应和破坏模式的变化。在工作压力为30 kg / cm ^2的情况下对管道进行穿孔（426.7 psi），以实验方式模拟非法开凿热孔来掠夺石油产品时产生的条件。已经发现，不同的管段具有相对较低的机械强度，特别是由高密度聚乙烯制成的层。进行拉伸和压缩测试，以获得适当的技术数据以进行静态模拟，并将外部孔视为破坏机制。经过有限元建模后，发现在压力为21.09 kg / cm ²的情况下，挠性管在HDPE内层出现了初始塌陷（300 psi），这与热攻钻孔引起的实验坍塌相吻合。尚未在陆上应用的挠性管道中研究这种类型的损坏。所提供的信息对于做出选择陆上碳氢化合物所涉及的适当材料的决策很有用。