Numerical simulation of structural response under bow flare slamming load

2013 ◽  
pp. 37-46
Keyword(s):  
Numerical Simulation ◽  
Structural Response ◽  
Slamming Load ◽  
Bow Flare ◽  
Flare Slamming

scholarly journals Numerical Simulation of Structural Response under Bow Flare Slamming Load

2017 ◽  
Vol 26 (0) ◽  
pp. 267-276
Author(s):  
Takao Yoshikawa ◽  
Ryuji Miyake ◽  
Takumi Yoshida ◽  
Masahiroa Maeda
Keyword(s):  
Numerical Simulation ◽  
Structural Response ◽  
Slamming Load ◽  
Bow Flare ◽  
Flare Slamming

Slamming load and hydroelastic structural response of bow flare areas of aluminium fast displacement crafts

2020 ◽  
Vol 218 ◽  
pp. 108207 ◽  
Author(s):  
Bin Liu ◽  
Shan Wang ◽  
R. Villavicencio ◽  
C. Guedes Soares
Keyword(s):  
Structural Response ◽  
Slamming Load ◽  
Bow Flare

scholarly journals Three-dimensional simulation of ship bow slamming

2021 ◽  
Vol 261 ◽  
pp. 03031
Author(s):  
Li Sha Gao ◽  
Pan Zhou
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Three Dimensional ◽  
Element Model ◽  
Distribution Rule ◽  
Slamming Load ◽  
Bow Flare ◽  
Dimensional Simulation ◽  
The Finite Element Model ◽  
Flare Slamming

The bow flare slamming load was studied by using the software Ls-dyna. A coupling finite element model including air, water and 3d bow was established. Flare slamming pressure was picked up from the finite element model in order to discuss the relation between flare slamming pressure and the velocity as well as the distribution rule of slamming pressure in different velocity and different water entry angle along the length and height of the ship.

scholarly journals Numerical simulation of structural response during propeller-rudder interaction

2021 ◽  
Vol 15 (1) ◽  
pp. 584-612
Author(s):  
Weipeng Zhang ◽  
Chongge Chen ◽  
Zibin Wang ◽  
Yinghong Li ◽  
Hang Guo ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Structural Response

An Assessment of Load and Response for Horizontal Slamming Loads From Model Scale Experiments

2018 ◽  
Author(s):  
Martin Storheim ◽  
Gunnar Lian
Keyword(s):  
Structural Response ◽  
Breaking Waves ◽  
Offshore Structures ◽  
Load Level ◽  
Material Behavior ◽  
Wave Impact ◽  
Large Variability ◽  
Slamming Load ◽  
Reasonable Approach ◽  
Wave Slamming

Steep breaking waves can result in high impact loads on offshore structures, and several model test campaigns have been conducted to assess the effect of horizontal wave slamming. High loads have been measured, and they can be challenging to withstand without significant deformation. For wave slamming problems it is common to estimate the characteristic slamming load and assume that this will give an equivalent characteristic response. One challenge related to the slamming load is that it has a large variability in load level, the duration of the load and the shape of the overall load pulse. This variability can have a large impact on the estimated response to the characteristic load, causing a similar or larger variability in response. Due to the sensitivity to the structural response, it may be difficult to interpret large amounts of such data to arrive at a relevant design load without making overly conservative assumptions. This paper investigates the sensitivity of the structural response to assumptions made in the material modelling and how the short term variability is affected if we instead of load use response indicators such as plastic strain and max deformation to arrive at a characteristic load. For this purpose, a simplified dynamic response model is created, and the recorded wave impact events can then be evaluated based on the predicted structural response from the simplified model. It was found that the structural response is sensitive to the structural configuration. The assumed material behavior and hydro-elastoplastic effects were identified to greatly affect the structural response. A reasonable approach to arrive at the q-annual response seems to be to first estimate the q-annual extreme slamming load, and then run the structural analysis on several of the measured slamming time series with the estimated q-annual extreme pressure.

Numerical Simulation on Fatigue Life Assessment of Free Span for Submarine Pipeline

2015 ◽  
Vol 750 ◽  
pp. 153-159
Author(s):  
Jie Dong ◽  
Xue Dong Chen ◽  
Bing Wang ◽  
Wei He Guan ◽  
Tie Cheng Yang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Fatigue Life ◽  
Oil And Gas ◽  
Structural Response ◽  
Simulation Method ◽  
Life Assessment ◽  
Response Analysis ◽  
Submarine Pipeline ◽  
Fatigue Life Assessment ◽  
Harmonic Response Analysis

The upper and lower courses of sea oil and gas exploitationare connected by submarine pipeline which is called life line project. Free span often occurs because of the unevenness and scour of seabed, and fatigue is one of the main failure modes.In this paper, with the finite element numerical simulation method, based on the harmonic response analysis, the research on the structural response of free span under the vibration induced by vortex was investigated, and the effect of the factors such as flow velocity, length of free span. According to the analysis results,the fatigue life of free span was evaluated.

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