{"id":{"repo_id":"carleton","oai_identifier":"oai:carleton.scholaris.ca:20.500.14718/41777"},"canonical_url":"https://search.dev.ndltd.org/etd/carleton/oai:carleton.scholaris.ca:20.500.14718/41777","repository":{"repo_id":"carleton","name":"Carleton University","base_url":"https://carleton.scholaris.ca/server/oai/request"},"display":{"title":"Multiscale Impact Mechanics of Additively Manufactured Periodic Cellular Solids","abstract":"Cellular materials have superior weight-specific properties, including energy absorption (EA) capabilities, as compared to solid, monolithic materials. Regular periodic lattices, a subset of cellular materials, are of increasing interest for their repeatable and customizable behavior, particularly when paired with advanced manufacturing techniques – such as additive manufacturing – which can fabricate these geometrically complex materials. This thesis analyzed these materials numerically and experimentally: multiple topologies were comprehensively investigated to understand how characteristics including strut alignment and relative density influence their performance, finding the presence of struts aligned in the impact direction led to lower EA efficiencies; the influence of shape transformers on the performance of stretching- and bending-dominated lattices was investigated, finding it possible to improve their EA performance by changing the strut cross-section shape; experiments with nylon carbon fiber lattices and resin lattices solidified earlier conclusions and suggested unique multi-layer, multi-topology lattice designs could improve EA performance.","abstract_html":"Cellular materials have superior weight-specific properties, including energy absorption (EA) capabilities, as compared to solid, monolithic materials. Regular periodic lattices, a subset of cellular materials, are of increasing interest for their repeatable and customizable behavior, particularly when paired with advanced manufacturing techniques – such as additive manufacturing – which can fabricate these geometrically complex materials. This thesis analyzed these materials numerically and experimentally: multiple topologies were comprehensively investigated to understand how characteristics including strut alignment and relative density influence their performance, finding the presence of struts aligned in the impact direction led to lower EA efficiencies; the influence of shape transformers on the performance of stretching- and bending-dominated lattices was investigated, finding it possible to improve their EA performance by changing the strut cross-section shape; experiments with nylon carbon fiber lattices and resin lattices solidified earlier conclusions and suggested unique multi-layer, multi-topology lattice designs could improve EA performance.","abstract_has_math":false,"creators":["Bernard, Autumn Rae"],"institution":"Carleton University","degree_name":"Master of Applied Science (M.App.Sc.)","degree_level":"Master's","degree_discipline":"Engineering, Aerospace","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023","date_published":"2023","updated_at":"2026-07-24T01:34:39Z","subjects":[],"languages":["en"],"rights":["Copyright © 2023 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, distribution to students, research and scholarship. Theses may only be shared by linking to the Carleton University Institutional Repository and no part may be copied without proper attribution to the author; no part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.22215/etd/2023-15930"],"render_values":[{"text":"10.22215/etd/2023-15930","href":"https://doi.org/10.22215/etd/2023-15930","code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/20.500.14718/41777","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Bernard, Autumn Rae"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-04-08T20:25:24Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-04-08T20:25:24Z"]},{"key":"dc:date.issued","label":"Date","values":["2023"]},{"key":"dc:publisher","label":"Institution","values":["Carleton University"]},{"key":"dc:type","label":"Dc Type","values":["thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Engineering, Aerospace"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Master's"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Applied Science (M.App.Sc.)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright © 2023 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, distribution to students, research and scholarship. Theses may only be shared by linking to the Carleton University Institutional Repository and no part may be copied without proper attribution to the author; no part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.22215/etd/2023-15930"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/20.500.14718/41777"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Cellular materials have superior weight-specific properties, including energy absorption (EA) capabilities, as compared to solid, monolithic materials. Regular periodic lattices, a subset of cellular materials, are of increasing interest for their repeatable and customizable behavior, particularly when paired with advanced manufacturing techniques – such as additive manufacturing – which can fabricate these geometrically complex materials. This thesis analyzed these materials numerically and experimentally: multiple topologies were comprehensively investigated to understand how characteristics including strut alignment and relative density influence their performance, finding the presence of struts aligned in the impact direction led to lower EA efficiencies; the influence of shape transformers on the performance of stretching- and bending-dominated lattices was investigated, finding it possible to improve their EA performance by changing the strut cross-section shape; experiments with nylon carbon fiber lattices and resin lattices solidified earlier conclusions and suggested unique multi-layer, multi-topology lattice designs could improve EA performance."]},{"key":"dc:title","label":"Title","values":["Multiscale Impact Mechanics of Additively Manufactured Periodic Cellular Solids"]}]}],"canonical_facts":{"dc:creator":["Bernard, Autumn Rae"],"dc:date.accessioned":["2025-04-08T20:25:24Z"],"dc:date.available":["2025-04-08T20:25:24Z"],"dc:date.issued":["2023"],"dc:description.abstract":["Cellular materials have superior weight-specific properties, including energy absorption (EA) capabilities, as compared to solid, monolithic materials. Regular periodic lattices, a subset of cellular materials, are of increasing interest for their repeatable and customizable behavior, particularly when paired with advanced manufacturing techniques – such as additive manufacturing – which can fabricate these geometrically complex materials. This thesis analyzed these materials numerically and experimentally: multiple topologies were comprehensively investigated to understand how characteristics including strut alignment and relative density influence their performance, finding the presence of struts aligned in the impact direction led to lower EA efficiencies; the influence of shape transformers on the performance of stretching- and bending-dominated lattices was investigated, finding it possible to improve their EA performance by changing the strut cross-section shape; experiments with nylon carbon fiber lattices and resin lattices solidified earlier conclusions and suggested unique multi-layer, multi-topology lattice designs could improve EA performance."],"dc:identifier.doi":["10.22215/etd/2023-15930"],"dc:identifier.uri":["https://hdl.handle.net/20.500.14718/41777"],"dc:language.iso":["en"],"dc:publisher":["Carleton University"],"dc:rights":["Copyright © 2023 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, distribution to students, research and scholarship. Theses may only be shared by linking to the Carleton University Institutional Repository and no part may be copied without proper attribution to the author; no part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner."],"dc:title":["Multiscale Impact Mechanics of Additively Manufactured Periodic Cellular Solids"],"dc:type":["thesis"],"thesis:degree_discipline":["Engineering, Aerospace"],"thesis:degree_level":["Master's"],"thesis:degree_name":["Master of Applied Science (M.App.Sc.)"]},"updated_at":"2026-07-24T01:34:39Z"}