Ship crashworthiness in risk based design

The concept of goal based design is gradually gaining a foothold in the IMO regulatory process. This paper demonstrates how this concept can be implemented in a practical way. The demonstrator case is transport of dangerous cargo on Europe's inland water ways. © 2011 Taylor & Francis Group, London.

Global hydroelastic ship response comparison of numerical model and WILS model tests

It is nowadays well recognized that the hydroelastic ship response might be an important part of the overall ship structural response. We usually talk about two phenomena: namely springing and whipping, even if sometimes it is not trivial to distinguish between the two of them. Usually, springing is defined as a continuous resonant wave-induced...

Marine FSI applications at TNO

Assessment of impact noise at 31.5Hz

Due to the increasing popularity of lightweight building methods, vibrations and low frequency noise have become a greater challenge. This work deals with the assessment of impact noise at the 31.5 Hz octave band. Three possible impact sound sources to determine the sound insulation have been tested and compared in laboratory measurements. It is...

A damage mechanics finite element simulation of a fracture mechanics experiment for S690 steel

The impact of collision on structural integrity

Windbelasting op gevels. Bijlage B

Loading on a rigid target from close proximity underwater explosions

Abstract. The study describes recent simulation results for underwater explosions in close-proximity to rigid targets. Simulations are performed using Chinook, an Eulerian computational fluid dynamics (CFD) code. Predicted target loadings are compared with measurements taken from a series of experiments conducted under an international...

DHV test computermodellen als alternatrief voor windtunnels. Woontoren decor voor windproeven

Lichtgewicht (woon)gebouwen. Deel 1: Voorspelling van lucht- en contactgeluidisolatie tussen ruimten

Aanpassing van de toetsingsdrukken voor de waterdichtheid van uitwendige scheidingsconstructies in NEN 2778: aansluiting bij het rekenmodel van EN 1991-1-4

NEN 2778 ‘Vochtwering in gebouwen - bepalingsmethoden’ geeft de bepalingsmethode voor de toetsing van de waterdichtheid van uitwendige scheidingsconstructies. Deze bepalingsmethode bestaat uit een beproeving, waarbij een hoeveelheid water wordt aangeboden aan en een drukverschil wordt opgelegd over de uitwendige scheidingsconstructie. Er wordt...

Reducing the effect of damage on operational effectiveness with DINCS technology

The combat systems of a naval ship are essential to the operational effectiveness of the maritime unit; less obviously, this is also true for several marine systems. The operation of the combat systems, the control of (battle) damage, and the ship’s mobility all depend on functions provided by a subset of the marine systems: the electrical...

Validation of the global hydroelastic model for springing & whipping of ships

Hydroelastic response of the ship can represent an important part of the overall structural response. This is true both for the extreme ship structural response as well as for the fatigue loads of some structural details. Several full scale monitoring campaigns on the container ships clearly show an important high frequency contribution coming...

A thermopiezomechanical finite rotation shell element

A finite rotation shell element is presented which can be used to analyse thermopiezomechanical phenomena when dealing with thin-walled smart structures. Initially, the underlying theory is explained in order to illustrate the simplifying assumptions that are eventually made. Several locking phenomena are avoided by deploying ANS and EAS...

Comparison of membrane punching experiments with biaxial tension/shear testing for characterization of fracture of uncracked bodies

A high strength steel (DP780was characterized for fracture with the Modified Mohr Coulomb (MMCaccumulated damage approach. Two different methods were used for the characterization and are compared in this paper. The first method, which is representative of procedures used in the sheet metal forming industry, features specimens being membrane...

Bifurcation analysis of delay-induced periodic oscillations

In this paper we consider a generic differential equation with a cubic nonlinearity and delay. This system, in the absence of delay, is known to undergo an oscillatory instability. The addition of the delay is shown to result in the creation of a number of periodic solutions with constant amplitude and a constant frequency; the number of...

Hydro-elastic response of ship structures to slamming induced whipping

Windbelasting op grote steigers