Bauhaus University, Weimar

About: Bauhaus University, Weimar is a education organization based out in Weimar, Thüringen, Germany. It is known for research contribution in the topics: Finite element method & Isogeometric analysis. The organization has 1421 authors who have published 2998 publications receiving 104454 citations. The organization is also known as: Bauhaus-Universität Weimar & Hochschule für Architektur und Bauwesen.

TIRA Integrated Research Architecture.

Abstract: Data and software are immaterial. Scientists in computer science hence have the unique chance to let other scientists easily reproduce their findings. Similarly, and with the same ease, the organization of shared tasks, i.e., the collaborative search for new algorithms given a predefined problem, is possible. Experience shows that the potential of reproducibility is hardly tapped in either case. Based on this observation, and driven by the ambitious goal to find the best solutions for certain problems in our research field, we have been developing the TIRA Integrated Research Architecture. Within TIRA, the reproducibility requirement got top priority right from the start. This chapter introduces the platform, its design requirements, its workflows from both the participants’ and the organizers’ perspectives, alongside a report on user experience and usage scenarios.

Computational Methods for Fracture in Brittle and Quasi-Brittle Solids: State-of-the-Art Review and Future Perspectives

Abstract: An overview of computational methods to model fracture in brittle and quasi-brittle materials is given. The overview focuses on continuum models for fracture. First, numerical difficulties related to modelling fracture for quasi-brittle materials will be discussed. Different techniques to eliminate or circumvent those difficulties will be described subsequently. In that context, regularization techniques such as nonlocal models, gradient enhanced models, viscous models, cohesive zone models, and smeared crack models will be discussed. The main focus of this paper will be on computational methods for discrete fracture (discrete cracks). Element erosion technques, inter-element separation methods, the embedded finite element method (EFEM), the extended finite element method (XFEM), meshfree methods (MMs), boundary elements (BEMs), isogeometric analysis, and the variational approach to fracture will be reviewed elucidating advantages and drawbacks of each approach. As tracking the crack path is of major concern in computational methods that preserve crack path continuity, one section will discuss different crack tracking techniques. Finally, cracking criteria will be reviewed before the paper ends with future research perspectives.