Blar i HVL Open på forfatter "Liu, Zhenhui"
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The application of the coupled acoustic-structural approach (CASA) method on the free vibration of submerged structures
Ullestad, Oskar; Liu, Zhenhui (Peer reviewed; Journal article, 2023)Traditionally, the consideration of the surrounding water during the modal analysis of submerged structures has been done by applying constant added mass factors. This method may lose its accuracy for complicated structures, ... -
Local and global assessments of a subsea riser-spool connection under dropped impact loads
Liu, Zhenhui; Igland, Ragnar; Bruaseth, Sindre (Peer reviewed; Journal article, 2021)Subsea riser tube and spool is often used together to connect the riser of jacket to flowline or pipeline. Due to its limited size (less than 200 m), the location is within the lifting zones of the platform. Consequently, ... -
Numerical Analysis of an Articulated Hybrid Offshore Wind Turbine Concept
Liu, Zhenhui; Aga, Preben Aarland; Velund, Håkon Ola (Peer reviewed; Journal article, 2023)The concept of a "hybrid offshore wind turbine" originated from articulated loading platforms (ALPS). In this study, we have developed a concept design for the major structural components. Orcaflex was used to create a ... -
Numerical simulations of the sliding impact between an ice floe and a ship hull structure in ABAQUS
Zhang, Jianan; Liu, Zhenhui; Ong, Muk Chen; Tang, Wenyong (Peer reviewed; Journal article, 2022)This paper studies the hull structural responses of a steel grillage subjected to sliding ice loads, which have been rarely investigated in the literature. Sliding ice loads are modelled using nonlinear finite element ... -
A simple machine learning based framework for processing the inline inspection data of subsea pipelines
Liu, Zhenhui; Dahl, Sindre S.; Larsen, E. S.; Yang, Zhirong (Peer reviewed; Journal article, 2021)This paper presents a simple machine learning based framework for diagnosing the inline inspection data (ILI) of subsea pipelines. ILI data are obtained by intelligent pigging devices operating along subsea pipelines. The ...