Evaluating the acoustoelastic coupling in an industrial gas turbine annular combustor

Design and analysis of a semi-submersible floating wind turbine with focus on structural response reduction

Floating structures as spar, semi-submersibles and TLP have been proposed for offshore wind turbines for deep waters (>60m) according to the report of Arapogianni, Moccia, Williams, & Phillips (2011), where bottom fixed sub-structures are technically and economically not feasible. Several floating concepts have been designed and just some of...

Heat transfer enhancement of a permanent magnet synchronous machine used in vehicle traction

One of the major restrictions that hinder the versatility of electrical machines in any sector is their thermal limitations. This thesis deals with the study of the heat transfer occurring in an outer rotor permanent magnet synchronous machine used in the electric vehicle industry with the aim of exploring possibilities to reduce the hotspot...

Effect of plastic deformation on residual strength of ship structures after grounding

Ship grounding decreases the strength of ship hull structures once plastic deformation occurs during the event. In practice of ship societies, current method of determining residual strength of ship hull structures after grounding is to totally remove the plastically damaged parts. As plastically deformed part of ship hull structures might still...

Structural behavior of pressure locked gratings

Pressure locked gratings have many uses, both on land and at sea. This is mainly due to the high degree of flexibility in dimensions and load bearing capacity. Despite the many uses in our surroundings, the term pressure locked grating is unknown to many. This term refers to the way in which the most important connection in pressure locked...

Preliminary Structural Design for a Hypersonic UAV

The design and development of a small unmanned aerial vehicle is proposed in order to provide more accurate hypersonic flight data. The outcomes could improve the current shortage of hypersonic flight data and serve to understand and predict how test conditions may be different from actual test flight. Furthermore, the response of the structure...

Dwarskrachtsterkte van verticaal voorgespannen tandopleggingen / Shear capacity of vertically prestressed half joints

The application of prefabricated and usually prestressed concrete elements has increased since mid-20th century. These elements are at the point of reaching the end of their life span, are subjected to damages or a change in functionality. Therefore, it is necessary to evaluate their structural safety. In many cases, existing structures do not...

Enhancing iterative solution methods for general FEM computations using rigid body modes.

High Strength Steel Structures – FEM Validation Experiments

Stresses in asphaltic wearing courses on renovated steel bridge decks

Fatigue damage is a common problem in a lot of bridges with orthotropic steel decks. Frequent maintenance is required to prevent aggravation of the problems, which gives a lot of nuisance for the traffic using the bridge. This comes especially into play at large (river) crossings where not many alternatives are available. Therefore, methods are...

Punching shear behaviour of structural slabs on top of ribbed foundation piles

The excavated building pit is a frequently used building technique during the construction of structures below ground level. A temporary structure of sheet piles and underwater concrete is designed to retain soil and water. Ribbed tension piles are driven to compensate the hydrostatic pressure after de-watering of the construction pit. Generally...

Numerical modeling of dam-reservoir interaction seismic response using the Hybrid Frequency–Time Domain (HFTD) method

The research work studies the fundamentals of the Hybrid Frequency-Time Domain (HFTD) method for dynamic analysis of structures, applied to the seismic analysis of dam-reservoir interaction systems. The theoretical consistency and accuracy of the HFTD method, based on the frequency domain Fourier analysis, is demonstrated through all the parts...

Feasibility study on fiber reinforced polymer cylindrical truss bridges for heavy traffic

Considering the recent increase in the use of fiber reinforced polymers in the civil engineering industry in general and in the bridge engineering industry in particular, as well as the recently more and more applied cylindrical truss bridge type, this research focuses on the question whether it is possible to combine fiber reinforced polymers...

Three-dimensional numerical analysis of tunnelling induced damage: The influence of masonry building geometry and location

Recent tunnelling projects have received a great amount of media attention due to settlement induced damage. Due to the simplified approach of existing risk assessment methods, a new assessment system is in development, which can account for three-dimensional structural aspects of buildings. The aim of this study is to investigate the influence...

Modelling and simulation of bone implant healing

In this report a model for the ingrowth of a prosthesis in a bone will be formulated and simulated. First an overview is given of all the biological processes that are part of this healing process and what external factors can influence this process. Then a first mathematical model is presented in which the mechanical stimuli (one of the...

Local Buckling Behaviour of a Corrosion Resistant Alloy Liner in Tight Fit Pipe due to Axial Compression

A promising possibility to reduce corrosion resistant pipeline costs is the concept of Tight Fit Pipe, which is a double wall pipe where a Corrosion Resistant Alloy liner is mechanically fitted inside a carbon steel outer pipe. The mechanical bonding of the Tight Fit Pipe is made through a thermohydraulic manufacturing process. Problem...