G
Gerhard Holzapfel
Researcher at Norwegian University of Science and Technology
Publications - 445
Citations - 29335
Gerhard Holzapfel is an academic researcher from Norwegian University of Science and Technology. The author has contributed to research in topics: Finite element method & Constitutive equation. The author has an hindex of 77, co-authored 410 publications receiving 25410 citations. Previous affiliations of Gerhard Holzapfel include Washington University in St. Louis & Graz University of Technology.
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Single lamellar mechanics of the human lumbar anulus fibrosus
TL;DR: The single anulus lamella may be seen as the elementary structural unit of the anulus fibrosus, and exhibits marked anisotropy and distinct regional variation of tensile properties and fiber angles.
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Mechanical characterization of human brain tissue.
Silvia Budday,Gerhard Sommer,Christoph Birkl,Christian Langkammer,Johannes Haybaeck,J Kohnert,M Bauer,Friedrich Paulsen,Paul Steinmann,Ellen Kuhl,Gerhard Holzapfel,Gerhard Holzapfel +11 more
TL;DR: This work performs a sequence of experimental tests on the same brain specimen to characterize the regional and directional behavior, and supplements these tests with DTI and histology to explore to which extent the macrostructural response is a result of the underlying microstructure.
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Determination of material models for arterial walls from uniaxial extension tests and histological structure.
TL;DR: An approach is proposed that allows the determination of material models from uniaxial tests and histostructural data including fiber orientation of the tissue including Fung-type strain-energy functions providing strict local convexity and preferred fiber orientations.
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Brain tissue deforms similarly to filled elastomers and follows consolidation theory
TL;DR: A systematic series of in vitro experiments on human brain tissue reveals the first direct evidence that the tissue obeys consolidation theory involving fluid migration, with properties similar to fine soils, but having much smaller volumetric compressibility.
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A polyconvex framework for soft biological tissues. Adjustment to experimental data
TL;DR: In this paper, a simple method for constructing transversely isotropic polyconvex functions suitable for the description of biological soft tissues is presented, where only a few parameters are necessary to approximate a variety of stress-strain curves and to satisfy the condition of a stress-free reference configuration a priori in the framework of polyconcaveity.