UB Weimar OPUS 4.6.3

Efficient domain decomposition based reliability analysis for polymorphic uncertain material parameters (2021)

Schmidt, Albrecht ; Lahmer, Tom

Realistic uncertainty description incorporating aleatoric and epistemic uncertainties can be described within the framework of polymorphic uncertainty, which is computationally demanding. Utilizing a domain decomposition approach for random field based uncertainty models the proposed level-based sampling method can reduce these computational costs significantly and shows good agreement with a standard sampling technique. While 2-level configurations tend to get unstable with decreasing sampling density 3-level setups show encouraging results for the investigated reliability analysis of a structural unit square.

PDE based determination of piezoelectric material tensors (2006)

Kaltenbacher, Barbara ; Lahmer, Tom ; Mohr, Marcus ; Kaltenbacher, Manfred

PDE based determination of piezoelectric material tensors.

Fem-based determination of real and complex elastic, dielectric, and piezoelectric moduli in piezoceramic materials (2008)

Lahmer, Tom ; Kaltenbacher, Manfred ; Kaltenbacher, Barbara ; Lerch, Reinhard ; Leder, Erich

Fem-based determination of real and complex elastic, dielectric, and piezoelectric moduli in piezoceramic materials.

Optimal measurement selection for piezoelectric material tensor identification (2008)

Lahmer, Tom ; Kaltenbacher, Barbara ; Schulz, V.

Optimal measurement selection for piezoelectric material tensor identification.

Modified Landweber iterations in a multilevel algorithm applied to inverse problems in piezoelectricity (2009)

Lahmer, Tom

Modified Landweber iterations in a multilevel algorithm applied to inverse problems in piezoelectricity

Enhanced homogenization technique for magnetomechanical systems using the generalized finite element method (2009)

Hauck, A. ; Lahmer, Tom ; Kaltenbacher, Manfred

Enhanced homogenization technique for magnetomechanical systems using the generalized finite element method

Optimal positioning of sensors for the monitoring of water dams (2010)

Lahmer, Tom ; Könke, Carsten ; Bettzieche, Volker

Optimal positioning of sensors for the monitoring of water dams

Optimale Positionierung von Messeinrichtungen an Staumauern zur Bauwerksüberwachung (2010)

Lahmer, Tom ; Könke, Carsten ; Bettzieche, Volker

Optimale Positionierung von Messeinrichtungen an Staumauern zur Bauwerksüberwachung

Crack identification in hydro-mechanical systems with applications to gravity water dams (2010)

Lahmer, Tom

Crack identification in hydro-mechanical systems with applications to gravity water dams

Synthese und Analyse von gekoppelten Modellen im konstruktiven Ingenieurbau (2011)

Stein, Peter ; Lahmer, Tom ; Bock, Sebastian

Synthese und Analyse von gekoppelten Modellen im konstruktiven Ingenieurbau

Bewertungsmethoden für Modelle des konstruktiven Ingenieurbaus (2011)

Lahmer, Tom ; Knabe, Tina ; Nikulla, Susanne ; Reuter, Markus

Bewertungsmethoden für Modelle des konstruktiven Ingenieurbaus

Optimal experimental design for nonlinear ill-posed problems applied to gravity dams (2011)

Lahmer, Tom

Optimal experimental design for nonlinear ill-posed problems applied to gravity dams

Evaluation of coupled partial models in structural engineering using graph theory and sensitivity analysis (2011)

Keitel, Holger ; Karaki, Ghada ; Lahmer, Tom ; Nikulla, Susanne ; Zabel, Volkmar

Evaluation of coupled partial models in structural engineering using graph theory and sensitivity analysis

Detection of flaws in piezoelectric structures using extended FEM (2013)

Nanthakumar, S.S. ; Lahmer, Tom ; Rabczuk, Timon

Detection of flaws in piezoelectric structures using extended FEM

Identification of constitutive parameters of soil using an optimization strategy and statistical analysis (2013)

Knabe, Tina ; Datcheva, Maria ; Lahmer, Tom ; Cotecchia, F. ; Schanz, Tom

Identification of constitutive parameters of soil using an optimization strategy and statistical analysis

Uncertainty quantification for multiscale modeling of polymer nanocomposites with correlated parameters (2015)

Vu-Bac, N. ; Rafiee, Roham ; Zhuang, Xiaoying ; Lahmer, Tom ; Rabczuk, Timon

Uncertainty quantification for multiscale modeling of polymer nanocomposites with correlated parameters

Variance-based sensitivity analyses of piezoelectric models (2015)

Lahmer, Tom ; Ilg, J. ; Lerch, Reinhard

Variance-based sensitivity analyses of piezoelectric models

A dynamic XFEM formulation for crack identification (2016)

Zhang, Chao ; Wang, Cuixia ; Lahmer, Tom ; He, Pengfei ; Rabczuk, Timon

A dynamic XFEM formulation for crack identification

A software framework for probabilistic sensitivity analysis for computationally expensive models (2016)

Vu-Bac, N. ; Lahmer, Tom ; Zhuang, Xiaoying ; Nguyen-Thoi, T. ; Rabczuk, Timon

A software framework for probabilistic sensitivity analysis for computationally expensive models

A novel parameter identification approach for buffer elements involving complex coupled thermo-hydro-mechanical analyses (2016)

Nguyen-Tuan, Long ; Lahmer, Tom ; Datcheva, Maria ; Stoimenova, Eugenia ; Schanz, Tom

A novel parameter identification approach for buffer elements involving complex coupled thermo-hydro-mechanical analyses

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