Experimental testing and numerical simulation of granules as crash absorber for double hull structures
Zusammenfassung
In the maritime sector, the collision safety is an essential aspect of ship operation. Aiming at further improvements,thefillingofthecavityinadoublehullstructurewithgranularmaterialisinvestigatedinthis thesis. Inordertodoso,thepotentialofdifferentgranulesisdeterminedexperimentally,alongwiththedescription of their material parameters as particles and as a bulk material, respectively. Furthermore, a simplifiedsidehullstructureisdesignedforexperimentaltesting,followedbyanumericalstudyofdifferentmaterial models for the granules. This leads to the simulation of a realistic collision scenario, showing the potential in the maritime industry.
Contents
1 Introduction 1
1.1 Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 State of the art . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Purpose and scope of this thesis . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Outline of this thesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Constitutive equations and numerical implementation 6
2.1 Constitutive equations . . . . . . . ....
Schlagworte
Kollisionssicherheit Doppelhülle Martime Anwendung Crash-Absorber Kollisionsversuch Granulate Expandiertes Glass-Granulat Experimentelle Untersuchung Finite-Elemente-Methode Collision safety Double hull structure Maritime applications Crash absorber Collision test Granules Expanded glass material Experimental testing Finite element method- 116–116 Appendix 116–116
- 119–136 Bibliography 119–136
4 Treffer gefunden
- „... pyknotropy effects [63, 64, 65]. This is a non-linear model, based on the deformation rate and void ratio [66 ...” „... improvement of crashworthiness of a vessel is always an aspect regarding the development, manufacturing, and ...” „... under development and will fill the seas further away from the coast. Apart from the increase in ship ...”
- „... experiments are modelled and simulated using two different material models for the granules, as described in ...” „... simulations. It can handle non-linearities due to material models, rupture, and friction, and the small time ...” „... resolution is favourable for comparisons with experimental data. The initial model used for the calculations ...”
- „... , CRC Press, 2013, ISBN:978-1-315-88489-9. [15] C. G. Soares (Ed.), Developments in the Collision and ...” „... . Suzuki, Model test on the collapse strength of the buffer bow structures, Marine Structures 15 (4) (2002 ...” „... discrete element model using arrays of ellipsoids, Géotechnique 47 (2) (1997) 319–329. doi:10.1680/geot ...”
- „... [20] is adapted to the problem at hand, allowing to perform numerical computations, based on the given ...” „... ]. The distance between the plates is 280 mm. Based on preliminary numerical results, a plate thickness ...” „... 5.1: Model of the considered double hull structure with a box to contain the granules and a small ...”