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Brodogradnja : An International Journal of Naval Architecture and Ocean Engineering for Research and Development, Vol. 76 No. 4, 2025.

Original scientific paper

https://doi.org/10.21278/brod76407

Structural Strength Evaluation of a Planing Hull Based on a One-way Coupled CFD-FEA

Jianjun Tu ; College of Shipbuilding Engineering, Harbin Engineering University, Harbin, 150001, China
Feng Feng ; College of Shipbuilding Engineering, Harbin Engineering University, Harbin, 150001, China
Yang Lu ; College of Shipbuilding Engineering, Harbin Engineering University, Harbin, 150001, China *
Shiwei Wang ; Heilongjiang Water Transport Planning and Design Institute Co., Ltd., Harbin 150001, China
Qian Cao ; Heilongjiang Water Transport Planning and Design Institute Co., Ltd., Harbin 150001, China

* Corresponding author.

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Abstract

This study employs a one-way coupling method based on CFD and FEA to evaluate and compare the structural strength of a planing hull under calm water and wave navigation conditions. A high-speed planing hull is selected as the research object. The wave loads under different navigation states are computed using the CFD method, and the pressure distribution on the hull bottom is mapped to a finite element model for structural strength analysis. The study investigates the variations in hull bottom pressure and structural stress under three navigation states: displacement, semi-planing, and planing. Additionally, the stress characteristics under wave conditions, including hogging and sagging states, are simulated and evaluated. By comparing the results with those obtained from the conventional empirical formula method, the accuracy and advantages of CFD in wave load calculations are validated, and the localized stress concentration areas under calm planing conditions are identified. The results demonstrate that this method not only enhances the precision of wave load calculations but also provides an effective approach for structural strength evaluation in planing hull design, thereby improving the technical and economic performance of planing hulls.

Keywords

Planing hull; computational fluid dynamics, finite-element analysis; wave load; structural strength

Hrčak ID:

334958

URI

https://hrcak.srce.hr/334958

Publication date:

1.10.2025.

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