Methods for Efficient Analysis of Vibro-Acoustic Problems

In this thesis, we present numerical techniques for analyzing vibro-acoustic problems that emerge from the coupling of elastic structures with fluid domains. The main analysis tool used for numerical modelling is the Finite Element Technique (FEM). By using FEM, the goal of our research was to either improve the already available techniques or...

Dynamic Substructuring for Efficient Vibrational Studies in Buildings

As a reaction to urban densication, light weight building is an attractive concept for optimally utilizing the capacity of the existing built environment. A common issue paired with light weight construction is the need to engage in vibrational design, in order to minimize hindrance due to human activities such as walking, that cause vibrations...

Interface reduction for Hurty/Craig-Bampton substructured models: Review and improvements

The Hurty/Craig-Bampton method in structural dynamics represents the interior dynamics of each subcomponent in a substructured system with a truncated set of normal modes and retains all of the physical degrees of freedom at the substructure interfaces. This makes the assembly of substructures into a reduced-order system model relatively...

Model order reduction and substructuring methods for nonlinear structural dynamics

Dynamic analysis of large-size finite element models has been commonly applied by mechanical engineers to simulate the dynamic behavior of complex structures. The ever-increasing demand for both detailed and accurate simulation of complex structures forces mechanical engineers to pursue a balance between two conflicting goals during the...

Component Mode Synthesis for geometrically nonlinear structures

In the field of computational physics and engineering, the introduction of computers opened a world of possibilities. The finite element method was developed in order to solve complex problems numerically. Over time, the method matured and structures in the field of engineering became more and more complex, resulting in large degree of freedom...

Dynamic Substructuring Methodologies for Integrated Dynamic Analysis of Wind Turbines