{"id":{"repo_id":"qu-belfast","oai_identifier":"oai:pure.qub.ac.uk/portal:studenttheses/788ac801-d883-47b0-9314-c90e960c9b72"},"canonical_url":"https://search.dev.ndltd.org/etd/qu-belfast/oai:pure.qub.ac.uk/portal:studenttheses/788ac801-d883-47b0-9314-c90e960c9b72","repository":{"repo_id":"qu-belfast","name":"Queen's University Belfast","base_url":"https://pureadmin.qub.ac.uk/ws/oai"},"display":{"title":"High-resolution numerical models for damage assessment in composite materials","abstract":"This thesis was conducted as part of an Innovative Training Network (ITN) (“ICONIC” - Improving the crashworthiness of composite transportation structures), funded by the European Union’s Horizon 2020 research and innovation programme, under the Marie Sklodowska-Curie grant agreement No 721256. The reported work was undertaken within Work Package 3 (WP3) - “Numerical modelling of impact and crush behaviour of composite structures”, where the focus was on the high-fidelity modelling of energy absorbing mechanisms of carbon fibre-reinforced polymer (CFRP) composite structures, under a variety of quasi-static and dynamic loading conditions. This contribution presents several numerical strategies to evaluate the mechanical performance of these materials at their different length scales. The developed tools enable a proper and detailed evaluation of the damage mechanisms which arise in both unidirectional and two-dimensional woven textile composites.<br/><br/>It is well established that a methodology which can be considered reliable in predicting the structural response of heterogeneous materials depends on the scale at which damage is explicitly modelled, making low-scale models ideal subjects to assess the behaviour of composites. Here, it is shown that computational micro- and mesomechanics can be regarded as a reliable numerical tool to analyse different types of phenomena whose contribution is often neglected in laminate-level analysis. The effect of certain material parameters on the mechanical performance of the material, which are difficult to characterise experimentally, can now be studied, and consequently, this work makes a vital contribution towards the proper exploitation of high-resolution numerical frameworks.","abstract_html":"This thesis was conducted as part of an Innovative Training Network (ITN) (“ICONIC” - Improving the crashworthiness of composite transportation structures), funded by the European Union’s Horizon 2020 research and innovation programme, under the Marie Sklodowska-Curie grant agreement No 721256. The reported work was undertaken within Work Package 3 (WP3) - “Numerical modelling of impact and crush behaviour of composite structures”, where the focus was on the high-fidelity modelling of energy absorbing mechanisms of carbon fibre-reinforced polymer (CFRP) composite structures, under a variety of quasi-static and dynamic loading conditions. This contribution presents several numerical strategies to evaluate the mechanical performance of these materials at their different length scales. The developed tools enable a proper and detailed evaluation of the damage mechanisms which arise in both unidirectional and two-dimensional woven textile composites.&lt;br/&gt;&lt;br/&gt;It is well established that a methodology which can be considered reliable in predicting the structural response of heterogeneous materials depends on the scale at which damage is explicitly modelled, making low-scale models ideal subjects to assess the behaviour of composites. Here, it is shown that computational micro- and mesomechanics can be regarded as a reliable numerical tool to analyse different types of phenomena whose contribution is often neglected in laminate-level analysis. The effect of certain material parameters on the mechanical performance of the material, which are difficult to characterise experimentally, can now be studied, and consequently, this work makes a vital contribution towards the proper exploitation of high-resolution numerical frameworks.","abstract_has_math":false,"creators":["Varandas, Luis"],"institution":"Queen's University Belfast","degree_name":"Doctor of Philosophy","degree_level":"Doctoral Thesis","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2020,"date_issued":"2020-12","date_published":"2020-12","updated_at":"2026-07-24T03:55:25Z","subjects":["Polymer matrix composites (PMCs)","fracture","computational mechanics","micromechanics","Mesomechanics","stochastic","delamination migration","textile composites","size effect method"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["oai:pure.qub.ac.uk/portal:studenttheses/788ac801-d883-47b0-9314-c90e960c9b72"],"render_values":[{"text":"oai:pure.qub.ac.uk/portal:studenttheses/788ac801-d883-47b0-9314-c90e960c9b72","href":null,"code":true}]}]},"links":{"outbound_url":"https://pure.qub.ac.uk/en/studentTheses/788ac801-d883-47b0-9314-c90e960c9b72","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.sponsor","label":"Sponsor","values":["EC/Horizon 2020 Marie Skłodowska-Curie actions"]},{"key":"dc:creator","label":"Author","values":["Varandas, Luis"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2020-12"]},{"key":"dc:date.issued","label":"Date","values":["2020-12"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["School of Mechanical and Aerospace Engineering"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["Queen's University Belfast"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://pure.qub.ac.uk/en/studentTheses/788ac801-d883-47b0-9314-c90e960c9b72"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Doctoral Thesis"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["Doctor of Philosophy"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Polymer matrix composites (PMCs)","fracture","computational mechanics","micromechanics","Mesomechanics","stochastic","delamination migration","textile composites","size effect method"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["oai:pure.qub.ac.uk/portal:studenttheses/788ac801-d883-47b0-9314-c90e960c9b72","https://pure.qub.ac.uk/en/studentTheses/788ac801-d883-47b0-9314-c90e960c9b72"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://pure.qub.ac.uk/files/214718155/PhD_Thesis_LFV.pdf"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This thesis was conducted as part of an Innovative Training Network (ITN) (“ICONIC” - Improving the crashworthiness of composite transportation structures), funded by the European Union’s Horizon 2020 research and innovation programme, under the Marie Sklodowska-Curie grant agreement No 721256. The reported work was undertaken within Work Package 3 (WP3) - “Numerical modelling of impact and crush behaviour of composite structures”, where the focus was on the high-fidelity modelling of energy absorbing mechanisms of carbon fibre-reinforced polymer (CFRP) composite structures, under a variety of quasi-static and dynamic loading conditions. This contribution presents several numerical strategies to evaluate the mechanical performance of these materials at their different length scales. The developed tools enable a proper and detailed evaluation of the damage mechanisms which arise in both unidirectional and two-dimensional woven textile composites.<br/><br/>It is well established that a methodology which can be considered reliable in predicting the structural response of heterogeneous materials depends on the scale at which damage is explicitly modelled, making low-scale models ideal subjects to assess the behaviour of composites. Here, it is shown that computational micro- and mesomechanics can be regarded as a reliable numerical tool to analyse different types of phenomena whose contribution is often neglected in laminate-level analysis. The effect of certain material parameters on the mechanical performance of the material, which are difficult to characterise experimentally, can now be studied, and consequently, this work makes a vital contribution towards the proper exploitation of high-resolution numerical frameworks."]},{"key":"dc:title","label":"Title","values":["High-resolution numerical models for damage assessment in composite materials"]}]}],"canonical_facts":{"dc:contributor.sponsor":["EC/Horizon 2020 Marie Skłodowska-Curie actions"],"dc:creator":["Varandas, Luis"],"dc:date":["2020-12"],"dc:date.issued":["2020-12"],"dc:description.abstract":["This thesis was conducted as part of an Innovative Training Network (ITN) (“ICONIC” - Improving the crashworthiness of composite transportation structures), funded by the European Union’s Horizon 2020 research and innovation programme, under the Marie Sklodowska-Curie grant agreement No 721256. The reported work was undertaken within Work Package 3 (WP3) - “Numerical modelling of impact and crush behaviour of composite structures”, where the focus was on the high-fidelity modelling of energy absorbing mechanisms of carbon fibre-reinforced polymer (CFRP) composite structures, under a variety of quasi-static and dynamic loading conditions. This contribution presents several numerical strategies to evaluate the mechanical performance of these materials at their different length scales. The developed tools enable a proper and detailed evaluation of the damage mechanisms which arise in both unidirectional and two-dimensional woven textile composites.<br/><br/>It is well established that a methodology which can be considered reliable in predicting the structural response of heterogeneous materials depends on the scale at which damage is explicitly modelled, making low-scale models ideal subjects to assess the behaviour of composites. Here, it is shown that computational micro- and mesomechanics can be regarded as a reliable numerical tool to analyse different types of phenomena whose contribution is often neglected in laminate-level analysis. The effect of certain material parameters on the mechanical performance of the material, which are difficult to characterise experimentally, can now be studied, and consequently, this work makes a vital contribution towards the proper exploitation of high-resolution numerical frameworks."],"dc:identifier":["oai:pure.qub.ac.uk/portal:studenttheses/788ac801-d883-47b0-9314-c90e960c9b72","https://pure.qub.ac.uk/en/studentTheses/788ac801-d883-47b0-9314-c90e960c9b72"],"dc:identifier.uri":["https://pure.qub.ac.uk/files/214718155/PhD_Thesis_LFV.pdf"],"dc:language":["eng"],"dc:publisher.department":["School of Mechanical and Aerospace Engineering"],"dc:publisher.institution":["Queen's University Belfast"],"dc:relation.isreferencedby":["https://pure.qub.ac.uk/en/studentTheses/788ac801-d883-47b0-9314-c90e960c9b72"],"dc:subject":["Polymer matrix composites (PMCs)","fracture","computational mechanics","micromechanics","Mesomechanics","stochastic","delamination migration","textile composites","size effect method"],"dc:title":["High-resolution numerical models for damage assessment in composite materials"],"dc:type":["Thesis"],"dc:type.qualificationlevel":["Doctoral Thesis"],"dc:type.qualificationname":["Doctor of Philosophy"]},"updated_at":"2026-07-24T03:55:25Z"}