PSI - Issue 5

Jung Min Sohn et al. / Procedia Structural Integrity 5 (2017) 935–942 Aditya Rio Prabowo et al. / Structural Integrity Procedia 00 (2017) 000 – 000

936

2

Nomenclature A

the area of tearing

b

the width of the bridge pier in contact with the ship side

1.112 – 1.156 θ +3.760 θ 2 the moulded depth of the vessel

C 1.5

D E

the absorbed energy

h L

the height of broken or heavily deformed longitudinal members

the ship length the length of cut

l

l e

the length of an element the broadside collision load the destroyed material

P side

R T

t

the thickness of the structural component (Equations 6 and 7)

t eq

the equivalent plate thickness

t s α β ε f

the thickness of the members (Equation 2) a factor depending on the necking strain

a factor accounting for the stiffening system of the ship

the failure strain the uniform strain the necking strain

ε g ε e σ 0 σ Y

the flow stress of the material the yield strength of the material

1. Introduction

Wide distribution of various commodities, from a valuable one, such as car, bus, truck and heavy vehicle, until a dangerous cargo in form of nuclear reactor, crude oil and chemical fluid are preferred to be conducted using water transportation mode, namely ship. Besides these commodities, continuous supply to an offshore structure during drilling and production are also considered which makes the development of offshore supply vessel (OSV) rapidly increasing since the past decade. However, the most valuable cargo that ships ever distribute is probably humans. Definition of human here is including passenger and crew. Terrible accidents such as the Titanic in Atlantic Ocean 1912, passenger ship accident of the Doña Paz in Philippines’s sea territory 1987, caps ize case of the Costa Concordia in Mediterranean Sea 2012 and previous sinking case of the Sewol in South Korean’s sea 2014 are several examples of ship accidents on passenger ships. Safety of the passengers, crew, cargo and ship itself is correlating each other. Prediction in term of structural behavior and damage extent will present valuable information and data for further calculations, for instance human factors and collision risk. In the present paper, an investigation to observe structural behavior on a passenger ship is studied. Consideration of the external dynamics of ship collision is defined with implementation of several collision locations on the target ship. Contribution of the designated locations to the structural crashworthiness during ship collision is observed.

2. Review on collision phenomena

Ship collision is a dynamic phenomenon which involves various factors making collision highly. A brief review of the pioneer works in this field and development on calculation method is presented in this section.

2.1. Observation on ship collision

The origin of ship collision can be traced from a contact phenomenon that takes place suddenly and generally happens in accidental form. As its nature as an accidental load, results of a ship collision can be various depending on