Life Prediction and Stress Evaluation of Hydraulic Winch Drum by Finite Element Analysis and Experiment

Gi-Chun Lee, Jane Park, Tae-Yeon Nam, Jong-Sik Choi, Jong-Won Park, Yong-Bum Lee, Yeong-Gi Je, Jae-Hwan Lee

The structural safety of hydraulic winch drum and the gears are estimated by the Finite Element Analysis (FEA) and the winch operation experiment. The mesh conv...

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DOI: https://doi.org/10.3744/SNAK.2020.57.5.254

Uncertainty Assessment of Outdoor Free-Running Model Tests for Evaluating Ship Maneuverability

Jongyeol Park, Jeonghwa Seo, Taeil Lee, Daehan Lee, Gyukpo Park, Hyeon Kyu Yoon, Shin Hyung Rhee

An outdoor free-running model test system was designed for assessing ship maneuverability with test uncertainty. The test model was a surface combatant of tumbl...

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DOI: https://doi.org/10.3744/SNAK.2020.57.5.262

A Study on BEM-Based Numerical Simulation Technique for Underwater Explosions

Joonmo Choung, Jae-bin Lee

Recoverability and vulnerability of navy ships under underwater explosion are critical verification factors in the acquisition phase of navy ships. This paper a...

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DOI: https://doi.org/10.3744/SNAK.2020.57.5.271

An Effect of Numerical Region with High Resolution for Kelvin Wave on Ship Resistance

Min Jae Kang, Seok Hwan Oh, Chan Woo Kim, Mi Jin Yoon, Sang Bong Lee

Reynolds-averaged Navier-Stokes simulations have been performed to investigate an effect of numerical region with high resolution for Kelvin wave around KRISO c...

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DOI: https://doi.org/10.3744/SNAK.2020.57.5.278

Study on the Estimation of Autonomous Underwater Vehicle’s Maneuverability Using Vertical Planar Motion Mechanism Test in Self-Propelled Condition

Jongyeol Park, Shin Hyung Rhee, Sungsu Lee, Hyeon Kyu Yoon, Jeonghwa Seo, Phil-Yeob Lee, Ho Sung Kim, Hansol Lee

The present study aims to improve the accuracy of the maneuvering simulations based on captive model test results. To derive the hydrodynamic coefficients in a ...

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DOI: https://doi.org/10.3744/SNAK.2020.57.5.287

Application of Multi-Layer Perceptron and Random Forest Method for Cylinder Plate Forming

Seong-Kyeom Kim, Se-Yun Hwang, Jang-Hyun Lee

In this study, the prediction method was reviewed to process a cylindrical plate forming using machine learning as a data-driven approach by roll bending equipm...

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DOI: https://doi.org/10.3744/SNAK.2020.57.5.297

Probabilistic Time Series Forecast of VLOC Model Using Bayesian Inference

Jaehyeon Son, Yooil Kim

This study presents a probabilistic time series forecast of ship structural response using Bayesian inference combined with Volterra linear model. The structura...

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DOI: https://doi.org/10.3744/SNAK.2020.57.5.305