Search Results - "Kollmannsberger, S."

A 3D benchmark problem for crack propagation in brittle fracture by Hug, L., Kollmannsberger, S., Yosibash, Z., Rank, E.

“…We propose a full 3D benchmark problem for brittle fracture based on experiments as well as a validation in the context of phase-field models. The example…”
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Uncertainty quantification of microstructure variability and mechanical behavior of additively manufactured lattice structures by Korshunova, N., Papaioannou, I., Kollmannsberger, S., Straub, D., Rank, E.

“…Process-induced defects are the leading cause of discrepancies between as-designed and as-manufactured additive manufacturing (AM) product behavior. Especially…”
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Phase-field modeling of brittle fracture with multi-level hp-FEM and the finite cell method by Nagaraja, S., Elhaddad, M., Ambati, M., Kollmannsberger, S., De Lorenzis, L., Rank, E.

“…The difficulties in dealing with discontinuities related to a sharp crack are overcome in the phase-field approach for fracture by modeling the crack as a…”
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Bending behavior of octet-truss lattice structures: Modelling options, numerical characterization and experimental validation by Korshunova, N., Alaimo, G., Hosseini, S.B., Carraturo, M., Reali, A., Niiranen, J., Auricchio, F., Rank, E., Kollmannsberger, S.

“…[Display omitted] •Process-induced defects affect the mechanical behavior of AM octet-truss lattices.•An immersed image-based workflow efficiently incorporates…”
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Geometric modeling, isogeometric analysis and the finite cell method by Rank, E., Ruess, M., Kollmannsberger, S., Schillinger, D., Düster, A.

“…► We emphasize that constructive solid modeling (CSG) needs to be better integrated with numerical analysis. ► We introduce the Finite Cell Method (FCM) as a…”
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A three-field phase-field model for mixed-mode fracture in rock based on experimental determination of the mode II fracture toughness by Hug, L., Potten, M., Stockinger, G., Thuro, K., Kollmannsberger, S.

“…In this contribution, a novel framework for simulating mixed-mode failure in rock is presented. Based on a hybrid phase-field model for mixed-mode fracture,…”
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Image-based material characterization of complex microarchitectured additively manufactured structures by Korshunova, N., Jomo, J., Lékó, G., Reznik, D., Balázs, P., Kollmannsberger, S.

“…Significant developments in the field of additive manufacturing (AM) allowed the fabrication of complex microarchitectured components with varying porosity…”
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Predicting fracture in the proximal humerus using phase field models by Hug, L., Dahan, G., Kollmannsberger, S., Rank, E., Yosibash, Z.

“…Proximal humerus impacted fractures are of clinical concern in the elderly population. Prediction of such fractures by CT-based finite element methods…”
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Shell Finite Cell Method: A high order fictitious domain approach for thin-walled structures by Rank, E., Kollmannsberger, S., Sorger, Ch, Düster, A.

“…► Shell Finite Cell Method is a high order fictitious domain approach. ► Trivial mesh generation even for complex geometries. ► Extension of the basic concept…”
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Parameter-free, weak imposition of Dirichlet boundary conditions and coupling of trimmed and non-conforming patches by Kollmannsberger, S., Özcan, A., Baiges, J., Ruess, M., Rank, E., Reali, A.

“…SummaryWe present a parameter‐free domain sewing approach for low‐order as well as high‐order finite elements. Its final form contains only primal unknowns;…”
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Robust and parallel scalable iterative solutions for large-scale finite cell analyses by Jomo, J.N., de Prenter, F., Elhaddad, M., D'Angella, D., Verhoosel, C.V., Kollmannsberger, S., Kirschke, J.S., Nübel, V., van Brummelen, E.H., Rank, E.

“…The finite cell method is a flexible discretization technique for numerical analysis on domains with complex geometries. By using a non-boundary conforming…”
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The Finite Cell Method for linear thermoelasticity by Zander, N., Kollmannsberger, S., Ruess, M., Yosibash, Z., Rank, E.

“…The recently introduced Finite Cell Method (FCM) combines the fictitious domain idea with the benefits of high-order Finite Elements. While previous…”
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An efficient integration technique for the voxel-based finite cell method by Yang, Z., Ruess, M., Kollmannsberger, S., Düster, A., Rank, E.

“…SUMMARY The finite cell method is a fictitious domain approach based on hierarchical Ansatz spaces of higher order. The method avoids time‐consuming and often…”
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Fixed-grid fluid-structure interaction in two dimensions based on a partitioned Lattice Boltzmann and p-FEM approach by Kollmannsberger, S., Geller, S., Düster, A., Tölke, J., Sorger, C., Krafczyk, M., Rank, E.

“…Over the last decade the Lattice Boltzmann method, which was derived from the kinetic gas theory, has matured as an efficient approach for solving…”
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FCMLab: A finite cell research toolbox for MATLAB by Zander, N., Bog, T., Elhaddad, M., Espinoza, R., Hu, H., Joly, A., Wu, C., Zerbe, P., Düster, A., Kollmannsberger, S., Parvizian, J., Ruess, M., Schillinger, D., Rank, E.

“…•Overview of the current state of the art of high-order fictitious domain methods.•Review of the recently introduced Finite Cell Method.•Introduces FCMLab as…”
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TUM.GeoFrame: automated high-order hexahedral mesh generation for shell-like structures by Sorger, C., Frischmann, F., Kollmannsberger, S., Rank, E.

“…This paper presents a fully automated high-order hexahedral mesh generation algorithm for shell-like structures based on enhanced sweeping methods. Traditional…”
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Hierarchical multigrid approaches for the finite cell method on uniform and multi-level hp-refined grids by Jomo, J., Oztoprak, O., de Prenter, F., Zander, N., Kollmannsberger, S., Rank, E.

“…This contribution presents a hierarchical multigrid approach for the solution of large-scale finite cell problems on both uniform grids and multi-level…”
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Two-scale analysis of spaceframes with complex additive manufactured nodes by Oztoprak, O., Paolini, A., D’Acunto, P., Rank, E., Kollmannsberger, S.

“…The advancements in additive manufacturing (AM) technology have allowed for the production of geometrically complex parts with customizable designs. This…”
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Hierarchical multigrid approaches for the finite cell method on uniform and multi-level -refined grids by Jomo, J, Oztoprak, O, de Prenter, F, Zander, N, Kollmannsberger, S, Rank, E

“…This contribution presents a hierarchical multigrid approach for the solution of large-scale finite cell problems on both uniform grids and multi-level…”
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Hierarchical multigrid approaches for the finite cell method on uniform and multi-level h p -refined grids by Jomo, J., Oztoprak, O., de Prenter, F., Zander, N., Kollmannsberger, S., Rank, E.

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