56 citations · 171 across the 14 of their papers we have counts for
15 papers
A space-time finite element formulation for geometrically exact shear-deformable beams
Ivo Steinbrecher, Alexander Humer
We present a space-time finite element formulation for the transient analysis of geometrically exact shear-deformable beams. The formulation treats space and time within a unified…
Mechanical Modeling of Braided Neurovascular Flow Diverters using a Beam-to-Beam and Beam-to-Surface Contact Formulation
Martin Frank, Ivo Steinbrecher, Matthias Mayr +1
Braided neurovascular flow diverters are widely used for the endovascular treatment of intracranial aneurysms, where their mechanical response and final deployed configuration are…
Contact-resolved deployment of the Contour Neurovascular System in patient-specific intracranial aneurysms
Ratnadeep Pramanik, Fina Gießler, Martin Frank +5
While intrasaccular flow disruptors are increasingly used to treat wide-necked intracranial aneurysms (IAs), many patient-specific computational workflows prescribe a pre-seated de…
Modified augmented Lagrangian preconditioning for mixed-dimensional beam-solid coupling
Max Firmbach, Ivo Steinbrecher, Alexander Popp +1
This paper presents modified augmented Lagrangian block preconditioners for the mixed-dimensional coupling of three-dimensional solid bodies with embedded one-dimensional torsion-f…
Mixed Finite Elements for Geometrically Exact Beams using Discontinuous Rotations and Discrete Curvature
Alexander Humer, Ivo Steinbrecher, Astrid Pechstein
We propose a novel mixed finite-element formulation for geometrically exact (Simo--Reissner) beams that introduces the moment vector as additional independent field. The specific m…
A variationally consistent beam-to-beam point coupling formulation for geometrically exact beam theories
Ivo Steinbrecher, Nora Hagmeyer, Christoph Meier +1
Slender beam-like structures frequently occur in engineering applications and often interact at discrete locations through joints or connectors. Accurate modeling of such interacti…
An Embedded Mesh Approach for Isogeometric Boundary Layers in Contact Mechanics
Eugenia Gabriela Loera Villeda, Ivo Steinbrecher, Alexander Popp
This paper proposes a novel discretization workflow for contact problems in which the discretization of the contact interface is decoupled from that of the bulk domain. This separa…
Influence of coronary plaque morphology on local mechanical states and associated in-stent restenosis
Janina C. Datz, Ivo Steinbrecher, Johannes Krefting +5
In-stent restenosis (ISR) after percutaneous coronary intervention is a multi-factorial process. Specific morphological lesion characteristics were observed to contribute to the oc…
Patient-specific coronary angioplasty simulations -- a mixed-dimensional finite element modeling approach
Janina C. Datz, Ivo Steinbrecher, Christoph Meier +6
Coronary angioplasty with stent implantation is the most frequently used interventional treatment for coronary artery disease. However, reocclusion within the stent, referred to as…
An approximate block factorization preconditioner for mixed-dimensional beam-solid interaction
Max Firmbach, Ivo Steinbrecher, Alexander Popp +1
This paper presents a scalable physics-based block preconditioner for mixed-dimensional models in beam-solid interaction and their application in engineering. In particular, it stu…
A consistent mixed-dimensional coupling approach for 1D Cosserat beams and 2D surfaces in 3D space
Ivo Steinbrecher, Nora Hagmeyer, Christoph Meier +1
The present article proposes a novel computational method for coupling arbitrarily curved 1D fibers with a 2D surface as defined, e.g., by the 2D surfaces of a 3D solid body or by…
Finite Element Formulations for Beam-to-Solid Interaction -- From Embedded Fibers Towards Contact
Alexander Popp, Ivo Steinbrecher
Contact and related phenomena, such as friction, wear or elastohydrodynamic lubrication, remain as one of the most challenging problem classes in nonlinear solid and structural mec…
Consistent coupling of positions and rotations for embedding 1D Cosserat beams into 3D solid volumes
Ivo Steinbrecher, Alexander Popp, Christoph Meier
This article proposes a mortar type finite element formulation for consistently embedding curved, slender beams, i.e. 1D Cosserat continua, into 3D solid volumes. A consistent 1D-3…
Fluid-beam interaction: Capturing the effect of embedded slender bodies on global fluid flow and vice versa
Nora Hagmeyer, Matthias Mayr, Ivo Steinbrecher +1
This work addresses research questions arising from the application of geometrically exact beam theory in the context of fluid-structure interaction (FSI). Geometrically exact beam…
A mortar-type finite element approach for embedding 1D beams into 3D solid volumes
Ivo Steinbrecher, Matthias Mayr, Maximilian J. Grill +3
In this work we present a novel computational method for embedding arbitrary curved one-dimensional (1D) fibers into three-dimensional (3D) solid volumes, as e.g. in fiber-reinforc…