Torsional Strength of CFRP Material for Application of Ship Shaft System

2021 ◽  
Vol 58 (6) ◽  
pp. 431-439
Author(s):  
Min-kyu Kim ◽  
Ick-gy Shin ◽  
Seon Jin Kim ◽  
Dae Kyeom Park ◽  
Jung Kwan Seo
Keyword(s):  
Torsional Strength ◽  
Shaft System

scholarly journals Application of Deep Reinforcement Learning to Predict Shaft Deformation Considering Hull Deformation of Medium-Sized Oil/Chemical Tanker

2021 ◽  
Vol 9 (7) ◽  
pp. 767
Author(s):  
Shin-Pyo Choi ◽  
Jae-Ung Lee ◽  
Jun-Bum Park
Keyword(s):  
Reinforcement Learning ◽  
Reaction Force ◽  
Measurement Data ◽  
System Stability ◽  
Main Bearing ◽  
Shaft System ◽  
Novel Approach ◽  
Design Changes ◽  
Prediction Techniques ◽  
Shaft Deformation

The enlargement of ships has increased the relative hull deformation owing to draft changes. Moreover, design changes such as an increased propeller diameter and pitch changes have occurred to compensate for the reduction in the engine revolution and consequent ship speed. In terms of propulsion shaft alignment, as the load of the stern tube support bearing increases, an uneven load distribution occurs between the shaft support bearings, leading to stern accidents. To prevent such accidents and to ensure shaft system stability, a shaft system design technique is required in which the shaft deformation resulting from the hull deformation is considered. Based on the measurement data of a medium-sized oil/chemical tanker, this study presents a novel approach to predicting the shaft deformation following stern hull deformation through inverse analysis using deep reinforcement learning, as opposed to traditional prediction techniques. The main bearing reaction force, which was difficult to reflect in previous studies, was predicted with high accuracy by comparing it with the measured value, and reasonable shaft deformation could be derived according to the hull deformation. The deep reinforcement learning technique in this study is expected to be expandable for predicting the dynamic behavior of the shaft of an operating vessel.

Analysis of the rub-impact forces between a controlled nonlinear rotating shaft system and the electromagnet pole legs

2021 ◽  
Vol 93 ◽  
pp. 792-810
Author(s):  
N.A. Saeed ◽  
Emad Mahrous Awwad ◽  
Mohammed A. EL-meligy ◽  
Emad Abouel Nasr
Keyword(s):  
Rotating Shaft ◽  
Shaft System ◽  
Impact Forces

Computer-vision-based research on friction vibration and coupling of frictional and torsional vibrations in water-lubricated bearing-shaft system

2020 ◽  
Vol 150 ◽  
pp. 106336 ◽  
Author(s):  
Fuming Kuang ◽  
Xincong Zhou ◽  
Zhenglin Liu ◽  
Jian Huang ◽  
Xueshen Liu ◽  
...  
Keyword(s):  
Computer Vision ◽  
Torsional Vibrations ◽  
Shaft System

Development of resin gear balance shaft system for 2AZ-FE engine

JSAE Review ◽  
2002 ◽  
Vol 23 (1) ◽  
pp. 27-32 ◽  
Author(s):  
M Ishikawa
Keyword(s):  
Shaft System ◽  
Balance Shaft

Study on vibration characteristics of the shaft system for a dredging pump based on FEM

2012 ◽  
Vol 15 (4) ◽  
pp. 042002
Author(s):  
L M Zhai ◽  
L Qin ◽  
C Y Liu ◽  
X Liu ◽  
L Y He ◽  
...  
Keyword(s):  
Vibration Characteristics ◽  
Shaft System

Flexibility and Torsional Strength of ProTaper and ProTaper Universal Rotary Instruments Assessed by Mechanical Tests

2009 ◽  
Vol 35 (1) ◽  
pp. 113-116 ◽  
Author(s):  
Alexandre Sandri Câmara ◽  
Renata de Castro Martins ◽  
Ana Cecília Diniz Viana ◽  
Renato de Toledo Leonardo ◽  
Vicente Tadeu Lopes Buono ◽  
...  
Keyword(s):  
Mechanical Tests ◽  
Torsional Strength ◽  
Rotary Instruments

A Research of Shaft Modal Simulation Method Based on the Preloaded Angular Contact Ball Bearing

2013 ◽  
Vol 389 ◽  
pp. 364-370
Author(s):  
Bei Li ◽  
Jian Bin Zhang ◽  
Lu Sha Jiang
Keyword(s):  
Simulation Analysis ◽  
Simulation Method ◽  
Numerical Control ◽  
Angular Contact Ball Bearing ◽  
Tightening Force ◽  
Shaft System ◽  
Element Simulation ◽  
Rolling Element ◽  
Bearing Stiffness ◽  
Main Spindle

In order to analysis modal characteristic of bearing with pre-tightening force on main spindle of numerical control lathe, this paper proposes a model of spindle modality analysis. This model is used to simulate the preloaded bearing shaft system modal, and the simulation results are verified by modal experiment. This paper takes 7005c as the research object to establish the equivalent-spring model based on the Hertz theory considering the pre-tightening force, whose focus is dealing with the contact between bearings rolling element and raceway. Then the model will be used to get the bearing stiffness for finite element simulation analysis. The shafting modal with preloaded bearing test platform is structured to get the shaft system modal parameters, which is compared with and verified the simulation analysis.

Stability Analysis of Rotating Shaft System with Many Bearings and Disks

1977 ◽  
Vol 43 (368) ◽  
pp. 1338-1347 ◽  
Author(s):  
Katsuaki KIKUCHI ◽  
Satomi KOBAYASHI
Keyword(s):  
Stability Analysis ◽  
Rotating Shaft ◽  
Shaft System

Stability region of floating intermediate support in a shaft system with multiple universal joints

2014 ◽  
Vol 28 (7) ◽  
pp. 2733-2742 ◽  
Author(s):  
Yiting Kang ◽  
Yanhua Shen ◽  
Wenming Zhang ◽  
Jue Yang
Keyword(s):  
Stability Region ◽  
Intermediate Support ◽  
Shaft System ◽  
Universal Joints

Analysis and enhancement of torsional vibration stopbands in a periodic shaft system

2013 ◽  
Vol 46 (14) ◽  
pp. 145306 ◽  
Author(s):  
Yubao Song ◽  
Jihong Wen ◽  
Dianlong Yu ◽  
Xisen Wen
Keyword(s):  
Torsional Vibration ◽  
Shaft System
Sign in / Sign up

Export Citation Format

Share Document