Kollmannsberger Stefan

Prof. Kollmannsberger Stefan

Technical University of Munich, Munich, Bavaria, Germany
orcid

Research Focus & Metrics

Academic Career Length

21Years (2006-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 December 2019 in Additive Manufacturing
Verified
Journal Article
Open access
APAlexander Paolini
Alexander Paolini
KSKollmannsberger Stefan
Kollmannsberger Stefan
ERErnst Rank
Ernst Rank

1 December 2012 in Computer Methods in Applied Mechanics and Engineering
Verified
Journal Article
Closed access
ERE. Rank
E. Rank
MRM. Ruess
M. Ruess
KSKollmannsberger Stefan
Kollmannsberger Stefan
DSD. Schillinger
D. Schillinger
ADA. Düster
A. Düster

12 May 2017 in Biofabrication
Verified
Journal Article
Closed access
PDF file
OBOnur Bas
Onur Bas
EDElena M. De-Juan-Pardo
Elena M. De-Juan-Pardo
CMChristoph Meinert
Christoph Meinert
DDDavide D’aNgella
Davide D’aNgella
JBJeremy G Baldwin
Jeremy G Baldwin
Dietmar Werner HutmacherDietmar Werner Hutmacher
Dietmar Werner Hutmacher
Articular cartilage from a material science point of view is a soft network composite that plays a critical role in load-bearing joints during dynamic loading. Its composite structure, consisting of a collagen fiber network and a hydrated proteoglycan matrix, gives rise to the complex mechanical properties of the tissue including viscoelasticity and stress relaxation. Melt electrospinning writing allows the design and fabrication of medical grade polycaprolactone (mPCL) fibrous networks for the reinforcement of soft hydrogel matrices for cartilage tissue engineering. However, these fiber-reinforced constructs underperformed under dynamic and prolonged loading conditions, suggesting that more targeted design approaches and material selection are required to fully exploit the potential of fibers as reinforcing agents for cartilage tissue engineering. In the present study, we emulated the proteoglycan matrix of articular cartilage by using highly negatively charged star-shaped poly(ethylene glycol)/heparin hydrogel (sPEG/Hep) as the soft matrix. These soft hydrogels combined with mPCL melt electrospun fibrous networks exhibited mechanical anisotropy, nonlinearity, viscoelasticity and morphology analogous to those of their native counterpart, and provided a suitable microenvironment for in vitro human chondrocyte culture and neocartilage formation. In addition, a numerical model using the p-version of the finite element method (p-FEM) was developed in order to gain further insights into the deformation mechanisms of the constructs in silico, as well as to predict compressive moduli. To our knowledge, this is the first study presenting cartilage tissue-engineered constructs that capture the overall transient, equilibrium and dynamic biomechanical properties of human articular cartilage.

1 July 2016 in Computer Methods in Applied Mechanics and Engineering
Verified
Journal Article
Closed access
LKLászló Kudela
László Kudela
NZNils Zander
Nils Zander
KSKollmannsberger Stefan
Kollmannsberger Stefan
ERErnst Rank
Ernst Rank

30 October 2018 in Computational Mechanics
Verified
Journal Article
Closed access
PDF file
SNS. Nagaraja
S. Nagaraja
MEM. Elhaddad
M. Elhaddad
MAM. Ambati
M. Ambati
KSKollmannsberger Stefan
Kollmannsberger Stefan
LLL. De Lorenzis
L. De Lorenzis
ERE. Rank
E. Rank

17 February 2015 in Computational Mechanics
Verified
Journal Article
Closed access
PDF file
NZNils Zander
Nils Zander
TBTino Bog
Tino Bog
KSKollmannsberger Stefan
Kollmannsberger Stefan
DSDominik Schillinger
Dominik Schillinger
ERErnst Rank
Ernst Rank