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Auxetic Metamaterials

MBL 549E Special Topics in Architectural Design Computing: Material-based Computational Design in Architecture | 2020-2021 Fall Course Instructor: Assoc. Prof. Dr. Sevil Yazıcı Auxetic Metamaterials Nijat Mahamaliyev, Alperen Temur, Doğukan Şamdancı The research discusses ‘MetaMaterial’ as a well-organized structure that can perform unexpected reactions (behaviors under load) to actions (forces, loads). At the beginning of the experimentation, several auxetic structures (such as tesseract, vintiles, honeycomb-1, cross, and octet) were examined by using a plug-in for Grasshopper, Interlattice. The plug-in has been used for producing cubes which are based on the principle of arraying determined cell type in the cartesian system. After the examination, to further analyze their behavior under load, selected modules were printed in the size of 3 cm x 3 cm x 3 cm with both PLA and TPU filaments. As a result, cubes, have been produced from interlattice’s cell types. Under the three levels of loads, the behavior of each structure has been analyzed. The three loads were: 337g cement-filled glass bottle, 883g plaster filled bottle & 1900g oil bottle. At the first stage, due to its rigidity, PLA modules were used. However, PLA modules did not show the expected deformations. They either broke or did not change their shapes. Due to their shape-memory capability modules which are printed with the TPU filament were selected. Because of their structural orders, various reactions/responses of the modules as buckling, enhancing, controlled shrinking & more were analyzed with physical experiments under the determined loads. The experiments had been recorded with precision and the records have been shared. https://mbl.itu.edu.tr/mbl-549-2020-2...