FG Statik und Dynamik

6 Items

Recent Submissions
Decision making in structural engineering problems under polymorphic uncertainty

Petryna, Yuri ; Drieschner, Martin (2019-02-22)

The treatment of diverse uncertainties is an important challenge in structural engineering problems, especially from the viewpoint of realistic analysis. Inaccuracy and variability are always present and have to be quantified by either probabilistic, possibilistic, polymorphic or other uncertainty approaches. Regardless to the applied uncertainty quantification method, the numerical predictions...

Parameterization of arbitrary hole shapes using non-destructive testing and resulting stress concentration in a 2D plate with finite dimensions

Drieschner, Martin ; Petryna, Yuri ; Eichner, Lukas (2019-02-21)

Air void inclusions are mostly unavoidable in many different materials resulting from manufacturing processes or environmental conditions. In this contribution, non-destructive testing (NDT) like computer tomography (CT) is used for air void detection and quantification. The air voids lead to stress concentrations around them which influence significantly the structural integrity and at worst, ...

Acquisition of polymorphic uncertain data based on computer tomographic scans and integration in numerical models of adhesive bonds

Drieschner, Martin ; Petryna, Yuri (2019-02-21)

Since commercial wind turbines were introduced around 1980, the length of rotor blades has increased substantially up to 80m with consequently higher demands on availability and failure prevention. One of the typical failure mechanisms of rotor blades in operation are fatigue cracks in adhesive bonds often caused by air voids with a-priori unknown properties, which results from the manufacturi...

Unterraumbasierte Detektion von Strukturschäden an Jacket-Gründungen von Offshore-Windenergieanlagen

Hille, Falk (2018)

Die vorliegende Arbeit beschreibt die Adaption eines globalen, schwingungsbasierten Verfahrens zur frühzeitigen Erkennung von Strukturschäden an Gründungsstrukturen offshore installierter Windenergieanlagen (OWEA). Damit soll es Betreibern von Offshore-Windparks ermöglicht werden, im Rahmen periodisch durchgeführter messtechnischer Überwachungsmaßnahmen mit einem gegenüber wiederkehrender Inspe...

A comparison of different seismological and geotechnical parameters for site characterization

Boxberger, Tobias (2018)

The geometry of the subsoil structure, the soil types involved and the variation in their properties with depth, lateral discontinuities and surface topography are causes of lateral variation in earthquake-induced ground motion, over relatively small scales, referred to as "site effects" The modification of ground motion can manifest itself through amplification at particular frequencies (the ...

Quasistatic seismic damage indicators for RC structures from dissipating energies in tangential subspaces

Krätzig, Wilfried B. ; Petryna, Yuri S. (2014-01-12)

This paper applies recent research on structural damage description to earthquake-resistant design concepts. Based on the primary design aim of life safety, this work adopts the necessity of additional protection aims for property, installation, and equipment. This requires the definition of damage indicators, which are able to quantify the arising structural damage. As in present design, it ap...