TY  - CHAP
A1  - Lahmer, Tom
ED  - Gürlebeck, Klaus
ED  - Könke, Carsten
T1  - HYDRO-MECHANICAL COUPLED FIELD SYSTEM IDENTIFICATION - APPLICATION TO WATER RESERVOIRS
N2  - In this paper we present an inverse method which is capable of identifying system components in a hydro-mechanically coupled system, i.e. for fluid flow in porous media. As an example we regard water dams that were constructed more than hundred years ago but which are still in use. Over the time ageing processes have changed the condition of these dams. Within the dams fissures might have grown. The proposed method is designed to locate these fissures out of combined mechanical and hydraulic measurements. In a numerical example the fissures or damaged zones are described by a smeared crack model. The task is now to identify simultaneously the spatial distribution of Young’s modulus and the hydraulic permeability due to the fact, that in regions where damages are present, the mechanical stiffness of the system is reduced and the permeability increased. The inversion is shown to be an ill-posed problem. As a consequence regularizing methods have to be applied, where the nonlinear Landweber method (a gradient type method combined with a discrepancy principle) has proven to be an efficient choice.
KW  - Angewandte Informatik
KW  - Angewandte Mathematik
KW  - Architektur <Informatik>
KW  - Computerunterstütztes Verfahren
KW  - Computer Science Models in Engineering; Multiscale and Multiphysical Models; Scientific Computing
Y1  - 2010
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-28650
UR  - http://euklid.bauing.uni-weimar.de/ikm2009/paper.html
SN  - 1611-4086
ER  - 
TY  - JOUR
A1  - Lahmer, Tom
A1  - Könke, Carsten
A1  - Bettzieche, Volker
T1  - Optimale Positionierung von Messeinrichtungen an Staumauern zur Bauwerksüberwachung
JF  - WASSERWIRTSCHAFT
N2  - Optimale Positionierung von Messeinrichtungen an Staumauern zur Bauwerksüberwachung
KW  - Angewandte Mathematik
KW  - Stochastik
KW  - Strukturmechanik
Y1  - 2010
SP  - 16
EP  - 16
ER  - 
TY  - JOUR
A1  - Lahmer, Tom
A1  - Könke, Carsten
A1  - Bettzieche, Volker
T1  - Optimal positioning of sensors for the monitoring of water dams
JF  - WASSERWIRTSCHAFT
N2  - Optimal positioning of sensors for the monitoring of water dams
KW  - Angewandte Mathematik
KW  - Stochastik
KW  - Strukturmechanik
Y1  - 2010
SP  - 16
EP  - 19
ER  - 
TY  - JOUR
A1  - Lahmer, Tom
T1  - Crack identification in hydro-mechanical systems with applications to gravity water dams
JF  - Inverse Problems in Science and Engineering
N2  - Crack identification in hydro-mechanical systems with applications to gravity water dams
KW  - Angewandte Mathematik
KW  - Stochastik
KW  - Strukturmechanik
Y1  - 2010
SP  - 1083
EP  - 1101
ER  -