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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
Multiple cracks identification for piezoelectric structures (2017)
Zhang, Chao ; Nanthakumar, S.S. ; Lahmer, Tom ; Rabczuk, Timon
Multiple cracks identification for piezoelectric structures
A unified framework for stochastic predictions of Young's modulus of clay/epoxy nanocomposites (PCNs) (2015)
Vu-Bac, N. ; Silani, Mohammad ; Lahmer, Tom ; Zhuang, Xiaoying ; Rabczuk, Timon
A unified framework for stochastic predictions of Young's modulus of clay/epoxy nanocomposites (PCNs)
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
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
Stochastic predictions of interfacial characteristic of polymeric nanocomposites (PNCs) (2014)
Vu-Bac, N. ; Lahmer, Tom ; Zhang, Yancheng ; Zhuang, Xiaoying ; Rabczuk, Timon
Stochastic predictions of interfacial characteristic of polymeric nanocomposites (PNCs)
Stochastic predictions of bulk properties of amorphous polyethylene based on molecular dynamics simulations (2014)
Vu-Bac, N. ; Lahmer, Tom ; Keitel, Holger ; Zhao, Jun-Hua ; Zhuang, Xiaoying ; Rabczuk, Timon
Stochastic predictions of bulk properties of amorphous polyethylene based on molecular dynamics simulations
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
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.
Extended Finite Element Method for Dynamic Fracture of Piezo-Electric Materials (2012)
Nguyen-Vinh, H. ; Bakar, I. ; Msekh, Mohammed Abdulrazzak ; Song, Jeong-Hoon ; Muthu, Jacob ; Zi, Goangseup ; Le, P. ; Bordas, Stéphane Pierre Alain ; Simpson, R. ; Natarajan, S. ; Lahmer, Tom ; Rabczuk, Timon
We present an extended finite element formulation for dynamic fracture of piezo-electric materials. The method is developed in the context of linear elastic fracture mechanics. It is applied to mode I and mixed mode-fracture for quasi-steady cracks. An implicit time integration scheme is exploited. The results are compared to results obtained with the boundary element method and show excellent agreement.
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