TY  - CHAP
A1  - Baitsch, Matthias
A1  - Hartmann, Dietrich
T1  - Object Oriented Finite Element Analysis for Structural Optimization using p-Elements
N2  - The optimization of continuous structures requires careful attention to discretization errors. Compared to ordinary low order formulation (h-elements) in conjunction with an adaptive mesh refinement in each optimization step, the use of high order finite elements (so called p-elements) has several advantages. However, compared to the h-method a higher order finite element analysis program poses higher demands from a software engineering point of view. In this article the basics of an object oriented higher order finite element system especially tailored to the use in structural optimization is presented. Besides the design of the system, aspects related to the employed implementation language Java are discussed.
KW  - Konzipieren <Technik>
KW  - Bauwerk
KW  - Finite-Elemente-Methode
Y1  - 2004
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-1089
ER  - 
TY  - JOUR
A1  - Galffy, Mozes
A1  - Wellmann Jelic, Andres
A1  - Hartmann, Dietrich
T1  - Lifetime-oriented modelling of vortex-induced across-wind vibrations on bridge tie rods
N2  - The influence of vortex-induces vibrations on vertical tie rods has been proved as a determinant load factor in the lifetime-oriented dimensioning of arched steel bridges. Particularly, the welded connection plates between the suspenders and the arches often exhibit cracks induced primarily rods. In this context, the synchronization of the vortex-shedding to the rod motion in a critical wind velocity range, the so-called lock-in effect, is of essential interest.
KW  - Finite-Elemente-Methode
KW  - Physikalisches Verfahren
KW  - Brückenbau
KW  - Schwingung
Y1  - 2004
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-2536
ER  -