| Title: | Behaviour of cellular metamaterials under impact loading conditions : doctoral disertation |
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| Authors: | ID Yilmaz, Yunus Emre (Author)
ID Ren, Zoran (Mentor) More about this mentor...  |
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| Files: |  DOK_Yilmaz_Yunus_Emre_2024.pdf (46,48 MB)
MD5: A65D8F70822CE6D408BECDE80CEF990F
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| Language: | Slovenian |
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| Work type: | Doctoral dissertation |
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| Typology: | 2.08 - Doctoral Dissertation |
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| Organization: | FS - Faculty of Mechanical Engineering
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| Abstract: | This doctoral thesis investigates cell-size-graded metallic and non-metallic Triply Periodic
Minimal Surface (TPMS) structures' behavior under varying loading rates. Using experimental
tests, analytical calculations, and advanced computer simulations, the research explores the
interplay between material properties, cell size grading, and deformation mechanisms under
different strain rates. The study focuses on enhancing the Direct Impact Hopkinson Bar (DIHB)
setup for accurate force and displacement measurements and pioneering a method for
quantifying inertial forces, critical at high strain rates.
Key findings show that cell-size grading significantly affects deformation patterns, with initial
deformation occurring in regions with smaller and lower stiffness cells across different loading
rates and TPMS geometries. The research also highlights topology's influence on mechanical
response, with photopolymer-based diamond structures showing superior energy absorption
and gas-atomized steel structures favoring gyroid configurations. This underscores the
importance of considering both topology and base material selection during TPMS design. The
study demonstrates the increasing prominence of inertial forces as deformation rates rise,
impacting structural response and failure likelihood in TPMS structures.
These insights inform the design of optimized cellular metamaterials for high-performance
applications requiring superior energy absorption and structural integrity under high loading
rates. The research advances material characterization techniques and computational
modelling capabilities, contributing to the development of next-generation cellular
metamaterials for broader engineering applications. |
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| Keywords: | Triply Periodic Minimal Surfaces, TPMS, Cell-size-grading, Impact, High-strainrate, Digital Image Correlation |
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| Place of publishing: | Maribor |
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| Place of performance: | Maribor |
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| Publisher: | [Y. E. Yilmaz] |
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| Year of publishing: | 2024 |
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| Number of pages: | VI, 203 str., XIX |
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| PID: | 20.500.12556/DKUM-88941 |
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| UDC: | 620.178.7:539.216/.218(043.3) |
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| COBISS.SI-ID: | 212550403 |
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| Publication date in DKUM: | 17.10.2024 |
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| Views: | 273 |
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| Downloads: | 64 |
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| Metadata: |    |
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| Categories: | KTFMB - FS
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