On Self-Intersections of Cubic Bézier Curves

Cubic Bézier curves are widely used in computer graphics and geometric modeling, favored for their intuitive design and ease of implementation. However, self-intersections within these curves can pose significant challenges in both geometric modeling and analysis. This paper presents a comprehensive approach to detecting and computing self...

Geometrical Mangrove Models: Quantifying frontal surface area distribution for Avicennia marina vegetation: an important parameter for estimating wave attenuation

To estimate wave attenuation by mangrove forests, trees are often schematized as uniform cylinders (over the height) representing a tree’s stem. However, trees have more complex geometrical features that influence the interaction between waves and tree structures. Recent studies have shown that the frontal surface area distribution over the...

An Efficient 3D-model for the Micro-Scale Analysis of Geometrically Imperfect Fibre-Reinforced Composites

This work develops a stand-alone Finite Element-based Unit Cell for the modelling of Fibre Reinforced Composites, capable of capturing 3D stress states and geometrical imperfections at the micro-scale. The project considers different beam and 3D elements for this purpose and draws comparisons between them based on computational efficiency,...

Acoustic wall treatments for wind tunnel aeroacoustic measurements

Sound absorbing porous materials are used to line a wind tunnel wall, in order to reduce reflections. However, the lining can have a detrimental effect on the acoustic measurements due to an increase in the noise radiated from the walls. In addition, the aerodynamic fidelity of the tunnel can be affected. In the present study, the influence...

Forming of sandwich panels on a reconfigurable mould: Exploratory research on quality improvement

The subject of this thesis is the forming of sandwich panels on a reconfigurable mould. The field of research is composite sheet forming. This novel manufacturing process at Curve Works has problems with panel quality, especially out-of-plane wrinkles. Exploratory research on quality improvement is performed by analysing the underlying...

Modeling and manipulating spacetime objects in a true 4D model

The concept of spacetime has long been used in physics to refer to models that integrate 3D space and time as a single 4D continuum. We argue in this paper that it is also advantageous to use this concept in a practical geographic context by realizing a true 4D model, where time is modeled and implemented as a dimension in the same manner as the...

Robustness improvement of polyhedral mesh method for airbag deployment simulations

In this project the problem of determining the inner and outer regions of the computational domain for an airbag deployment simulation is addressed. One approach to perform such simulation is via the structural equations of motion for the airbag fabric dynamics, Euler equations of fluid motion for the fluid inside the airbag and a coupling...

Automated 3D modeling of buildings in suburban areas based on integration of image and height data