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Numerical investigation of ship anchor penetration in cohesive baltic sea soil
Publikationstyp
Conference Paper
Date Issued
2022-06
Sprache
English
Author(s)
Institut
Number in series
9
Article Number
V009T10A002
Citation
ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022
Contribution to Conference
Publisher DOI
Scopus ID
Publisher
American Society of Mechanical Engineers
ISBN
978-0-7918-8594-9
One of the main reasons for damage to embedded offshore infrastructure is anchor penetration. Sea cables, for example, are harmed either by direct anchor contact or by additional pressure caused by anchor dragging above the cable. A sufficient permanent burial depth is required to minimize the risk of failure due to anchor penetration. This work presents the numerical simulation of the penetration process of two ship anchors (HHP AC-14 and Spek) in cohesive soil of the Baltic Sea. The simulations are carried out using the Coupled Euler-Lagrange (CEL) method in Abaqus/Explicit. Baltic Sea silt, under undrained conditions, is modeled. For the creep, relaxation behavior, and velocity dependence of the soil, the visco-hypoplastic constitutive model, according to [1], is used. Soil parameters have been obtained by laboratory tests. A parametric study is conducted varying anchor type, mass, and velocity, which significantly influence penetration depth and penetration behavior.
DDC Class
600: Technology