PR-175-420-R01 Submarine Pipeline Analysis - Theoretical Manual
Title
PR-175-420-R01 Submarine Pipeline Analysis - Theoretical Manual
Subject
Offshore, on-bottom stability
Description
Describes the computer program SPAN which computes the nonlinear transient response of a submarine pipeline, in contact with the ocean floor, to wave and current excitation. The dynamic response of a pipeline to impact loads, such as loads from trawl gear of fishing vessels, may also be computed. In addition, thermal expansion problems for submarine pipelines may be solved using SPAN.
Beam finite element theory is used for spatial discretization of the partial differential equations governing the motion of a submarine pipeline. Large-deflection, small-strain theory is employed. The formulation involves a consistent basis and added mass matrix. Quadratic drag is computed using a nonconventional approach that involves the beam shape functions. Soil-resistance loads are computed using unique pipeline-soil interaction models which take into account coupling of axial and lateral soil forces. The nonlinear governing equations are solved numerically using the Newmark Method. This manual presents the discretized equations of motion, the methods used in determining hydrodynamic and soil-resistance forces, and the solution method.
Beam finite element theory is used for spatial discretization of the partial differential equations governing the motion of a submarine pipeline. Large-deflection, small-strain theory is employed. The formulation involves a consistent basis and added mass matrix. Quadratic drag is computed using a nonconventional approach that involves the beam shape functions. Soil-resistance loads are computed using unique pipeline-soil interaction models which take into account coupling of axial and lateral soil forces. The nonlinear governing equations are solved numerically using the Newmark Method. This manual presents the discretized equations of motion, the methods used in determining hydrodynamic and soil-resistance forces, and the solution method.
Creator
C.D. Michalopoulos
Source
Reports
Publisher
Southwest Applied Mechanics, Inc.
Date
9/10/2021
Rights
PRCI members only
Relation
SBS
Type
Project - Final Report
Identifier
PR-175-420-R01
Citation
C.D. Michalopoulos, “PR-175-420-R01 Submarine Pipeline Analysis - Theoretical Manual,” Pipeline Research Council International Research Reports, accessed May 17, 2024, https://prci.omeka.net/items/show/5203.