Response surface modeling to facilitate the parametric study of transversely impacted pressurized pipelines. (October 2017)

• Record Type: Journal Article
• Authors: Dou, Yangqing; Ricks, Trenton M.; DuBien, Janice L.; Lacy, Thomas E.; Liu, Yucheng
• Is Part Of: Thin-walled structures. Volume 119(2017)
• Page Start: 646
• Page End: 652
• Publication Date: 2017-10
• Subjects: Response surface model -- Parametric study -- Impact of pressurized pipeline -- Analysis of variance -- Full factorial statistical design; Thin-walled structures -- Periodicals; 690.1
• DOI: 10.1016/j.tws.2017.07.026
• Languages: English
• ISSNs: 0263-8231

Abstract

Abstract: Finite element analyses of the transverse impact behavior of pressurized pipelines were previously performed for a variety of outside pipeline diameters and internal pressures at two spanwise locations. In this study, quadratic response surface models (RSMs) based on a full factorial statistical design were developed to predict the maximum permanent deflection, absorbed energy, and maximum force calculated for a given impact event. The RSMs were characterized in terms of two independent variables: outside diameter and internal pressure. An analysis of variance was then conducted for each response and used to determine an appropriate statistical model. The parametric study results showed that RSMs can efficiently and accurately reveal the influences of the design variables on the lateral impact response of the pressurized pipelines. Highlights: Demonstration of lateral impact response of pressurized pipelines using FEA. Parametric study to reveal effects of important factors on pipe's impact response. Establish response surface models to curve fitting the FEA results. A full factorial design to determine parameters' statistical significance. Previous experimental data were validated by the improved response surface models.