Refine
Year of publication
Document Type
- Conference Proceeding (25)
- Article (12)
- Lecture (2)
Language
- English (39) (remove)
Has Fulltext
- yes (39) (remove)
Keywords
- Finite-Elemente-Methode (12)
- Einspielen <Werkstoff> (10)
- FEM (6)
- shakedown analysis (5)
- Limit analysis (4)
- Shakedown analysis (4)
- Einspielanalyse (3)
- Shakedown (3)
- Technische Mechanik (3)
- Traglastanalyse (3)
- limit analysis (3)
- shakedown (3)
- Analytischer Zulaessigkeitsnachweis (2)
- Bruchmechanik (2)
- Einspiel-Analyse (2)
- Traglast (2)
- limit load (2)
- ratchetting (2)
- Alternating plasticity (1)
- Anastomose (1)
- Anastomosis (1)
- Axialbelastung (1)
- Axially cracked pipe (1)
- Basis Reduktion (1)
- Basis reduction (1)
- Bicharakteristikenverfahren (1)
- Biomechanics (1)
- Biomechanik (1)
- Biomedizinische Technik (1)
- Convex optimization (1)
- Deformation (1)
- Design-by-analysis (1)
- Druckbeanspruchung (1)
- Druckbehälter (1)
- Druckbelastung (1)
- Druckgeräte (1)
- Einspiel-Kriterium (1)
- Einspielen (1)
- Elastizität (1)
- Elastodynamik (1)
- Elastostatics (1)
- Exact Ilyushin yield surface (1)
- Fehlerstellen (1)
- Festkörper (1)
- Finite element method (1)
- First Order Reliabiblity Method (1)
- First-order reliability method (1)
- Fließgrenze (1)
- Global and local collapse (1)
- Grenzwertberechnung (1)
- Kinematics (1)
- Kinetics (1)
- Knochen (1)
- Knochenbildung (1)
- Knochenchirugie (1)
- Knochendichte (1)
- Materialermüdung (1)
- Mechanics (1)
- Multi-dimensional wave propagation (1)
- Nichtlineare Gleichung (1)
- Nichtlineare Optimierung (1)
- Nichtlineare Welle (1)
- PFM (1)
- Plastizität (1)
- Pressure loaded crack-face (1)
- Progressive plastic deformation (1)
- Random variable (1)
- Ratcheting (1)
- Ratchetting (1)
- Rohr (1)
- Rohrbruch (1)
- Schwammknochen (1)
- Sensitivity (1)
- Shakedown criterion (1)
- Stahl (1)
- Statics (1)
- Strukturanalyse (1)
- Temperaturabhängigkeit (1)
- Wellen (1)
- Wolff's Law (1)
- Wolffsches Gesetz (1)
- Zug-Druck Belastung (1)
- alternierend Verformbarkeit (1)
- bicharacteristics (1)
- bone density (1)
- bone structure (1)
- burst pressure (1)
- burst tests (1)
- cancellous bone (1)
- design-by-analysis (1)
- direct method (1)
- elastic solids (1)
- fatigue analyses (1)
- finite element analysis (1)
- flaw (1)
- fortschreitende plastische Deformation (1)
- konvexe Optimierung (1)
- limit and shakedown analysis (1)
- linear kinematic hardening (1)
- load limit (1)
- lower bound theorem (1)
- material shakedown (1)
- mechanical waves (1)
- nonlinear kinematic hardening (1)
- nonlinear optimization (1)
- nonlinear solids (1)
- nonlinear tensor constitutive equation (1)
- pipes (1)
- probabilistic fracture mechanics (1)
- reliability (1)
- reliability analysis (1)
- second-order reliability method (1)
- shakedown analyses (1)
- tension–torsion loading (1)
- thermal ratcheting (1)
- vessels (1)
- yield stress (1)
Institute
- Fachbereich Medizintechnik und Technomathematik (39) (remove)
Electromechanical model of hiPSC-derived ventricular cardiomyocytes cocultured with fibroblasts
(2018)
The CellDrum provides an experimental setup to study the mechanical effects of fibroblasts co-cultured with hiPSC-derived ventricular cardiomyocytes. Multi-scale computational models based on the Finite Element Method are developed. Coupled electrical cardiomyocyte-fibroblast models (cell level) are embedded into reaction-diffusion equations (tissue level) which compute the propagation of the action potential in the cardiac tissue. Electromechanical coupling is realised by an excitation-contraction model (cell level) and the active stress arising during contraction is added to the passive stress in the force balance, which determines the tissue displacement (tissue level). Tissue parameters in the model can be identified experimentally to the specific sample.
Smoothed Finite Element Methods for Nonlinear Solid Mechanics Problems: 2D and 3D Case Studies
(2016)
The Smoothed Finite Element Method (SFEM) is presented as an edge-based and a facebased techniques for 2D and 3D boundary value problems, respectively. SFEMs avoid shortcomings of the standard Finite Element Method (FEM) with lower order elements such as overly stiff behavior, poor stress solution, and locking effects. Based on the idea of averaging spatially the standard strain field of the FEM over so-called smoothing domains SFEM calculates the stiffness matrix for the same number of degrees of freedom (DOFs) as those of the FEM. However, the SFEMs significantly improve accuracy and convergence even for distorted meshes and/or nearly incompressible materials.
Numerical results of the SFEMs for a cardiac tissue membrane (thin plate inflation) and an artery (tension of 3D tube) show clearly their advantageous properties in improving accuracy particularly for the distorted meshes and avoiding shear locking effects.