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Real time structural loads monitoring for a large high-speed wave-piercing catamaran using numerical simulation and linear regression
Citation
Almallah, I and Lavroff, J and Holloway, DS and Shabani, B and Davis, MR, Real time structural loads monitoring for a large high-speed wave-piercing catamaran using numerical simulation and linear regression, Proceedings of Pacific International Maritime Conference 2019, 8-10 October 2019, Sydney, Australia, pp. 1-10. (2019) [Refereed Conference Paper]
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Official URL: https://www.pacificexpo.com.au/IMC2019/program.asp
Abstract
High-speed wave-piercing catamarans encounter several kinds of global loads; some are
similar to those for traditional monohull sea going ships, such as longitudinal bending
moment (LBM), shear, torsional and dynamic wave slamming loads. However, due to the
twin-hull configuration of the catamaran, additional types of global load are introduced, such
as pitch connecting moment (PCM) and transverse bending moment (TBM). This paper
investigates the structural health monitoring (SHM) of a high-speed wave-piercing catamaran
through prediction of global loads from real-time processing of signals from a large distributed
network of strain and acceleration sensors. Finite element method (FEM) and computational
fluid dynamic (CFD) analyses at full scale are deployed to simulate catamaran response to
loading cases and sea waves. A transformation equation based on a linear regression of the
FEA results is applied to measured signals to convert strain signals to global loads. Global loads
are also estimated using rigid body dynamics alongside computational fluid dynamics (CFD)
simulation of HSV2. Motion and strain data collected from sea trials runs of a 98m high-speed
wave-piercing catamaran (HSV-2) are used to confirm the proposed method. The sea trials
runs of HSV2 Incat catamaran have been carried out in 2004 in a wide range of sea states,
ship speed, wave heights, wave periods and sea wave headings. Longitudinal bending
moment (LBM) is estimated for headseas run at 20 knots using two methods based on CFD
and FEM simulation.
Item Details
| Item Type: | Refereed Conference Paper |
|---|---|
| Keywords: | global wave loads, finite element method (FEM), computational fluid dynamic (CFD), Wave-piercing catamaran, Full-scale, High-speed vessel. |
| Research Division: | Engineering |
| Research Group: | Maritime engineering |
| Research Field: | Ship and platform structures (incl. maritime hydrodynamics) |
| Objective Division: | Transport |
| Objective Group: | Water transport |
| Objective Field: | Domestic passenger water transport (e.g. ferries) |
| UTAS Author: | Almallah, I (Mr Islam Almallah) |
| UTAS Author: | Lavroff, J (Dr Jason Ali-Lavroff) |
| UTAS Author: | Holloway, DS (Associate Professor Damien Holloway) |
| UTAS Author: | Shabani, B (Dr Babak Shabani) |
| UTAS Author: | Davis, MR (Professor Michael Davis) |
| ID Code: | 135417 |
| Year Published: | 2019 |
| Deposited By: | Engineering |
| Deposited On: | 2019-10-18 |
| Last Modified: | 2019-11-07 |
| Downloads: | 0 |
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