search query: @keyword laivojen yhteentörmäys / total: 2
reference: 2 / 2
« previous | next »
Author:Ståhlberg, Kaarle
Title:Estimating deformation energy in ship-ship collisions with stochastic modeling
Muodonmuutosenergian arviointi laivojen yhteentörmäyksissä stokaistisella mallilla
Publication type:Master's thesis
Publication year:2010
Pages:107      Language:   eng
Department/School:Sovelletun mekaniikan laitos
Main subject:Laivanrakennusoppi   (Kul-24)
Supervisor:Kujala, Pentti
Instructor:Montewka, Jakub
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
Instructions

Reading digital theses in the closed network of the Aalto University Harald Herlin Learning Centre

In the closed network of Learning Centre you can read digital and digitized theses not available in the open network.

The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/

You can read theses on the Learning Centre customer computers, which are available on all floors.

Logging on to the customer computers

  • Aalto University staff members log on to the customer computer using the Aalto username and password.
  • Other customers log on using a shared username and password.

Opening a thesis

  • On the desktop of the customer computers, you will find an icon titled:

    Aalto Thesis Database

  • Click on the icon to search for and open the thesis you are looking for from Aaltodoc database. You can find the thesis file by clicking the link on the OEV or OEVS field.

Reading the thesis

  • You can either print the thesis or read it on the customer computer screen.
  • You cannot save the thesis file on a flash drive or email it.
  • You cannot copy text or images from the file.
  • You cannot edit the file.

Printing the thesis

  • You can print the thesis for your personal study or research use.
  • Aalto University students and staff members may print black-and-white prints on the PrintingPoint devices when using the computer with personal Aalto username and password. Color printing is possible using the printer u90203-psc3, which is located near the customer service. Color printing is subject to a charge to Aalto University students and staff members.
  • Other customers can use the printer u90203-psc3. All printing is subject to a charge to non-University members.
Location:P1 Ark Aalto  3953   | Archive
Keywords:ship collisions
deformation energy
evasive maneuvering
laivojen yhteentörmäys
muodonmuutosenergia
väistöliikkeet
Abstract (eng): The goal of the thesis is to create a general model for estimating the deformation energy in ship - ship collisions with traffic information available in AIS (Automatic identification System).
The analysis concentrates on selected high risk area between Helsinki and Tallinn where densely trafficked waterways cross.
Even though special attention is paid to the Gulf of Finland, the model is applicable to any given sea area by utilizing local AIS data on maritime traffic.

The AIS data will be applied to achieve a realistic and updateable traffic profile.
Each waterway specific traffic profile will consist of distributions of the main ship particulars in addition to the speed and the heading for each ship type.
Since the AIS data does not include all required information about the ships, some additional statistics is collected, for example the distributions of ship type specific block coefficients.

The effects of manoeuvring on the collision scenario are studied.
Based on limited available literature on the topic, a preliminary model for evasive manoeuvring principles is developed.
The obtained results between scenarios including and excluding the effects of evasive manoeuvring are compared.

The Monte Carlo simulation method is utilized to simulate a large number of collision scenarios that depend on the encountering angles.
The distributions obtained from AIS data for waterway specific traffic patterns and ship type dependant vessel particulars along with the effects of evasive manoeuvrings are used in the simulation.

The deformation energy in each collision scenario will be calculated by applying a method proposed by Zhang in his Ph.
D. thesis.
The variables needed to apply Zhang's method will be obtained from the Monte Carlo simulation.
The possibility of oil cargo tank rupture in collision is considered if the struck ship is a tanker.

Finally, the model is applied to estimate deformation energy in ship - ship collisions in the Gulf of Finland.
The estimated deformation energy will be used in the collision damage extent calculations.
With the model fairway specific ship - ship collision risk profile can be found.
ED:2010-10-29
INSSI record number: 41264
+ add basket
« previous | next »
INSSI