Results 21 to 30 of about 3,167,731 (226)

Simulation analysis on slamming mechanical properties of SPS-clad partially strengthened bow

Zhongguo Jianchuan Yanjiu, 2020
[Objectives] Sandwich plate system(SPS)has superior impact resistance and can be used in a design for the partial strengthening of a bow to improve its anti-slamming performance.[Methods] Nonlinear finite element software LS-DYNA is used to analyze the ...
TIAN Ali, YAO Peng, FU Zixuan, ZHAO Yuanshuai   +3 more
doaj   +1 more source

Experimental study on the asymmetric impact loads and hydroelastic responses of a very large container ship

International Journal of Naval Architecture and Ocean Engineering, 2020
This paper presents an experimental investigation of asymmetric impact effects on hydroelastic responses. A 1:64 scaled segmented ship model with U-shape open cross-section backbone was newly designed to meet elastic similarity conditions of vertical ...
Yuan Lin, Ning Ma, Xiechong Gu, Deyu Wang   +3 more
doaj   +1 more source

Simulation analysis on water entry loads of high-speed M-boat based on SPH method

Zhongguo Jianchuan Yanjiu, 2022
ObjectivesThis study analyzes the hydrodynamic loads of a typical cross-section structure of a high-speed M-boat during water entry.MethodsBased on the smooth particle dynamics (SPH) liquid-gas two-phase flow algorithm, simulations of both flat plate and
Yifan YANG, Sangui CHEN, Weixing ZHOU, Tao ZHANG   +3 more
doaj   +1 more source

Study on Slamming Pressure Characteristics of Platform under Freak Wave

Journal of Marine Science and Engineering, 2021
Freak waves have great peak energy, short duration, great contingency, and strong nonlinear characteristics, and can cause severe damage to ships and marine structures.
Fali Huo, Hongkun Yang, Zhi Yao, Kang An, Sheng Xu   +4 more
doaj   +1 more source

Theoretical and Experimental Study on Nonlinear Hydroelastic Responses and Slamming Loads of Ship Advancing in Regular Waves

Shock and Vibration, 2018
Wave loads estimation and structural strength evaluation are the fundamental work at the ship design stage. The hydroelastic responses and slamming strength issues are also concerned especially for large-scale high-speed ships sailing in harsh waves.
Jialong Jiao, Yulin Zhao, Yufei Ai, Chaohe Chen, Tianhui Fan   +4 more
doaj   +1 more source

Numerical Study of Slamming Loads on Bow Flare of FPSO Model by Irregular Waves

Journal of Marine Science and Engineering
Numerical studies were performed to investigate bow flare slamming loads under irregular waves. To estimate the slamming forces in the simulations, two time windows were selected based on existing experimental data.
Young Jun Kim, Kyong-Hwan Kim, Bo Woo Nam, Sa Young Hong, Yoon-Jin Ha   +4 more
doaj   +1 more source

A comparison between Smoothed-Particle Hydrodynamics and RANS Volume of Fluid method in modelling slamming

Journal of Ocean Engineering and Science, 2016
The oil and gas industry requires complex subsea infrastructure in order to develop offshore oil and gas fields. Upon installation, these components may encounter high slamming loads, stemming from impact with the water surface.
Marcus Sasson, Shuhong Chai, Genevieve Beck, Yuting Jin, Jalal Rafieshahraki   +4 more
doaj   +1 more source

Improving the Robustness of Visual Teach‐and‐Repeat Navigation Using Drift Error Correction and Event‐Based Vision for Low‐Light Environments

Advanced Robotics Research, EarlyView.
Visual teach‐and‐repeat (VTR) navigation allows robots to learn and follow routes without building a full metric map. We show that navigation accuracy for VTR can be improved by integrating a topological map with error‐drift correction based on stereo vision.
Fuhai Ling, Ze Huang, Tony J. Prescott
wiley   +1 more source

Numerical Investigation of the Effect of Spray Rail Designs on the Slamming Behaviour of Planing Hulls [PDF]

Journal of Applied Fluid Mechanics
Slamming loads represent a major design and operational challenge for planing hulls due to their influence on structural integrity and crew comfort.
M. Mohsin, N. M. R. Shaharuddin, M. A. A. Hasnan, M. H. S. Abdol Azis, O. Yaakob, A. Trimulyono   +5 more
doaj   +1 more source

Transferable Deep Reinforcement Learning With Edge‐Contour‐Depth Fusion for Autonomous Wireless Capsule Endoscopy Navigation

Advanced Science, EarlyView.
This study presents an anatomical landmark‐guided DRL framework for autonomous wireless capsule endoscopy navigation. Using a lightweight edge‐contour‐depth fusion module, it achieves over 97% coverage across diverse gastric anatomies. To ensure reliability, a two‐stage sim‐to‐real pipeline with an adaptive dynamic programming controller mitigates ...
Haoxuan Wu, Haitao Gao, Qingyang Liu, Sishen Yuan, Haiyang Fang, Mingwu Su, Baijia Liang, Yongzun Yang, Long Bai, Wenzhen Dong, Dihong Xie, Shijian Su, Jiewen Lai, Shing Shin Cheng, Zhen Li, Xiuli Zuo, Hongliang Ren   +16 more
wiley   +1 more source