Print Email Facebook Twitter The effect of nodal topology on cellular solid mechanics Title The effect of nodal topology on cellular solid mechanics: A preliminary diagnostic experimental investigation Author van Helvoort, Derron (TU Delft Aerospace Engineering) Contributor Rans, C.D. (mentor) Degree granting institution Delft University of Technology Programme Aerospace Engineering | Structures and Materials Date 2019-01-10 Abstract Additive manufacturing allows material structuring, supporting the fabrication of multiple-level structures or metamaterials. Through the lens of classical stress reduction, nature’s cellular solid structures feature stress-homogenizing nodal topologies. Avian long bones are an example. Research into the mechanics of open cell cellular solids seems focused on the effectiveness of unit cell architecture and neglects the detailed behavior of constituent nodes. Several specimen series were printed on the nodal- and cellular solid-levels of analysis, all with varying nodal topologies. A discussion of force-displacement and digital image correlation experimental data is had; the cellular solid deflection rigidity seems highly sensitive to nodal topology under quasi-static compression. It is thought that bioinspired profiles successfully homogenize stress and improve load transfer, mitigating nodal softening: peak stresses and the propagation of nodal torsion into adjoining strut deflection decreased. This sensitivity is relevant for lightweight strain energy absorption and stiffness provision, and demands further research. Subject Additive Manufacturingadditive manufacturing3D Printing3D printingBio-inspiredHoneycomb structureExperimental studyquasi staticQuasi-staticCompressionLightweightlightweightlightweight sructureTopology studycellular solidcellular solid nodelatticelattice nodeavian boneDelft University of TechnologyAerospaceaerospaceMattheckBaudFilletstress concentration zoneStress Distributionstress concentration factorDigital Image CorrelationDICEnergy Storagestrain energy To reference this document use: http://resolver.tudelft.nl/uuid:a659e44d-44b0-4871-8f24-2a4f64cf322e Coordinates 51.990533, 4.376853 Bibliographical note The unprocessed data, data processing scripts and processed data can all be accessed on the project's Open Science Foundation page. See links for access. Part of collection Student theses Document type master thesis Rights © 2019 Derron van Helvoort Files PDF PRINT_MSc_Thesis_Derron_v ... 132505.pdf 17.86 MB PDF MSc_Thesis_Derron_van_Hel ... 132505.pdf 36.88 MB Close viewer /islandora/object/uuid:a659e44d-44b0-4871-8f24-2a4f64cf322e/datastream/OBJ1/view