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Publications
Publications (14)
Lattice networks are indispensable to study heterogeneous materials such as concrete or rock as well as textiles and woven fabrics. Due to the discrete character of lattices, they quickly become computationally intensive. The QuasiContinuum (QC) Method resolves this challenge by interpolating the displacement of the underlying lattice with a coarse...
Lattice networks are indispensable to study heterogeneous materials such as concrete or rock as well as textiles and woven fabrics. Due to the discrete character of lattices, they quickly become computationally intensive. The QuasiContinuum (QC) Method resolves this challenge by interpolating the displacement of the underlying lattice with a coarse...
Lattice networks are indispensable to study heterogeneous materials such as concrete or rock as well as textiles and woven fabrics. Due to the discrete character of lattices, they quickly become computationally intensive. The QuasiContinuum (QC) Method resolves this challenge by interpolating the displacement of the underlying lattice with a coarse...
Lattice materials can be described as arrangements of cell walls such as beams with joints of high stiffness. Loads on the macroscopic level of the lattice material can cause a loss of structural stability on the microscopic level and lead to buckling of cell walls. In this study the buckling and post-buckling deformation of a triangular cell with...
Additive manufacturing methods (AM) allow the production of complex-shaped lattice structures from a wide range of materials with enhanced mechanical properties, e.g., high strength to relative density ratio. These structures can be modified for various applications considering a transfer of a specific load or to absorb a precise amount of energy w...
Lattice structures with low density tend to localize under compressive loading. The localizations start in a single cell band due to buckling of the beams and lead to compaction of the cells. To identify an appropriate discretization and to determine the influence of damage in an elasto‐plastic material behavior two simple load cases are analyzed w...
Homogenised finite element (FE) analyses are able to predict osteoporosis‐related bone fractures and become useful for clinical applications. The predictions of FE analyses depend on the apparent, heterogeneous, anisotropic, elastic and yield material properties, which are typically determined by implicit μFE analyses of trabecular bone. The object...
The load capacity of fillet welds is investigated experimentally and numerically in cross joint specimens with the objective of calibrating multiple failure criteria for the ductile fracture of weld metal. The cross joint specimens are composed of mild shipbuilding steel with plate thicknesses of 20 mm and 30 mm respectively. The fillet welds are m...
The design of double hull structures is investigated through two collision experiments with different large-scale specimens. The experiments were performed with a design of a typical double hull structure and a design with an alternative stiffening system (English: plate strengthened stiffeners, German: Plattenverstärkte Profilsteifen – PVPS) inven...
As a result of growing safety-related requirements in shipbuilding the design of double hulls in respect to accidents and collisions is mainly orientated on damage stability calculations. In order to increase the collision resistance and thereby the damage stability of ships the concept of an alternative stiffening system (English: plates strengthe...
Als Resultat gewachsener sicherheitstechnischer Anforderungen im Schiffbau orientiert sich der Entwurf von Doppelhüllen-Konstruktionen für Boden- und Seitenverbände im Hinblick auf Havarien infolge Kollision bzw. Grundberührung vorrangig am Nachweis der Leckstabilität. Mit dem Ziel den Kollisionswiderstand des passiven Kollisionsgegners zu erhöhen,...
This paper reports about the current state of a joint research project called SideColl.
In the case of a ship-ship collision, the struck vessel as a normal rule reacts as the weak collision partner.
In the past, several alternative side structures and double bottom designs with improved collision resistance already were presented. Most of them ar...
