Orthotropic Viscoelastic Creep in Cellular Scaffolds
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866908429909491712 |
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| author | Ferrara, Alessia Wittel, Falk K. |
| author_facet | Ferrara, Alessia Wittel, Falk K. |
| contents | Recent measurements of Norway spruce have revealed stress-state-dependent normalized creep behavior, highlighting a gap in our fundamental understanding. This study examines whether the anisotropic response originates from the micro-structural, cellular nature of composite cell walls with varying tracheid types. Cell wall creep parameters are identified via surrogate-based inverse parameter identification, applied to hierarchical micro-mechanical and FEM models of increasing topological complexity up to the growth ring scale. Despite microstructural disorder, simulated creep curves converge toward a universal set of proportionality factors. The results indicate that directional creep behavior cannot be attributed solely to tissue-scale topology, and that realistic predictions require the inclusion of non-linear material responses at stress concentration sites. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_01071 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Orthotropic Viscoelastic Creep in Cellular Scaffolds Ferrara, Alessia Wittel, Falk K. Cell Behavior Materials Science Biological Physics Recent measurements of Norway spruce have revealed stress-state-dependent normalized creep behavior, highlighting a gap in our fundamental understanding. This study examines whether the anisotropic response originates from the micro-structural, cellular nature of composite cell walls with varying tracheid types. Cell wall creep parameters are identified via surrogate-based inverse parameter identification, applied to hierarchical micro-mechanical and FEM models of increasing topological complexity up to the growth ring scale. Despite microstructural disorder, simulated creep curves converge toward a universal set of proportionality factors. The results indicate that directional creep behavior cannot be attributed solely to tissue-scale topology, and that realistic predictions require the inclusion of non-linear material responses at stress concentration sites. |
| title | Orthotropic Viscoelastic Creep in Cellular Scaffolds |
| topic | Cell Behavior Materials Science Biological Physics |
| url | https://arxiv.org/abs/2507.01071 |