Numerical analysis of CFRP mesoscale models
Autor(a) principal: | |
---|---|
Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/21553 |
Resumo: | Composite materials, specifically Carbon Fiber Reinforced Polymers, have a complex mechanical behaviour, therefore it is extremely complicated to predict failure and damage. There has been an increasing use of composite materials for structural applications as an alternative to metal due its lightweight and strength properties. Consequently, it is important to consolidate the knowledge about its behaviour under different loads in order to apply them correctly in structural applications. The Carbon Fiber Reinforced Polymer studied in this dissertation is a spread tow carbon fabric with four different arrangements - 0°/-90°, 15°/-75°, 30°/-60° and 45°/-45° under tension loads. A computational tool was developed in order to predict failure and damage propagation in Carbon Fiber Reinforced Polymers specimens. It is an interface program between the software Matlab and ANSYS. A mesh generator algorithm was developed in Matlab in order to automatically model specimens with different arrangements. Afterwards, an incremental iterative analysis is performed using an optimized methodology developed in Crespo’s dissertation [3] which gradually increments the displacement applied to the specimen. This analysis uses ANSYS as a solver, using the finite element method, to calculate the specimen’s mechanical behaviour and stress. The results are exported to Matlab, which applies a proposed failure criterion to the specimen’s elements and initiates ANSYS “killing” the failed elements and applying a new displacement. The program executes several iterations until the specimen’s failure and, in the end, plots the force applied and displacement in the specimen’s end. The numerical models were validated with numerous analysis using experimental and numerical results from articles and dissertations from different authors in order to guarantee the precision of the results and simulations. |
id |
RCAP_7614ba42de4acb92e070aef369808798 |
---|---|
oai_identifier_str |
oai:run.unl.pt:10362/21553 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Numerical analysis of CFRP mesoscale modelsMeso-mechanicsInterface elementsFailure criteriaDelaminationDamage propagationMesh generatorDomínio/Área Científica::Engenharia e Tecnologia::Engenharia MecânicaComposite materials, specifically Carbon Fiber Reinforced Polymers, have a complex mechanical behaviour, therefore it is extremely complicated to predict failure and damage. There has been an increasing use of composite materials for structural applications as an alternative to metal due its lightweight and strength properties. Consequently, it is important to consolidate the knowledge about its behaviour under different loads in order to apply them correctly in structural applications. The Carbon Fiber Reinforced Polymer studied in this dissertation is a spread tow carbon fabric with four different arrangements - 0°/-90°, 15°/-75°, 30°/-60° and 45°/-45° under tension loads. A computational tool was developed in order to predict failure and damage propagation in Carbon Fiber Reinforced Polymers specimens. It is an interface program between the software Matlab and ANSYS. A mesh generator algorithm was developed in Matlab in order to automatically model specimens with different arrangements. Afterwards, an incremental iterative analysis is performed using an optimized methodology developed in Crespo’s dissertation [3] which gradually increments the displacement applied to the specimen. This analysis uses ANSYS as a solver, using the finite element method, to calculate the specimen’s mechanical behaviour and stress. The results are exported to Matlab, which applies a proposed failure criterion to the specimen’s elements and initiates ANSYS “killing” the failed elements and applying a new displacement. The program executes several iterations until the specimen’s failure and, in the end, plots the force applied and displacement in the specimen’s end. The numerical models were validated with numerous analysis using experimental and numerical results from articles and dissertations from different authors in order to guarantee the precision of the results and simulations.Cardoso, JoãoTalaia, PedroRUNMangualde, Pedro Miguel Ferreira de Sousa Pepe2017-06-16T15:18:46Z2016-092017-062016-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/21553enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T04:08:19Zoai:run.unl.pt:10362/21553Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:26:50.903940Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Numerical analysis of CFRP mesoscale models |
title |
Numerical analysis of CFRP mesoscale models |
spellingShingle |
Numerical analysis of CFRP mesoscale models Mangualde, Pedro Miguel Ferreira de Sousa Pepe Meso-mechanics Interface elements Failure criteria Delamination Damage propagation Mesh generator Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Mecânica |
title_short |
Numerical analysis of CFRP mesoscale models |
title_full |
Numerical analysis of CFRP mesoscale models |
title_fullStr |
Numerical analysis of CFRP mesoscale models |
title_full_unstemmed |
Numerical analysis of CFRP mesoscale models |
title_sort |
Numerical analysis of CFRP mesoscale models |
author |
Mangualde, Pedro Miguel Ferreira de Sousa Pepe |
author_facet |
Mangualde, Pedro Miguel Ferreira de Sousa Pepe |
author_role |
author |
dc.contributor.none.fl_str_mv |
Cardoso, João Talaia, Pedro RUN |
dc.contributor.author.fl_str_mv |
Mangualde, Pedro Miguel Ferreira de Sousa Pepe |
dc.subject.por.fl_str_mv |
Meso-mechanics Interface elements Failure criteria Delamination Damage propagation Mesh generator Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Mecânica |
topic |
Meso-mechanics Interface elements Failure criteria Delamination Damage propagation Mesh generator Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Mecânica |
description |
Composite materials, specifically Carbon Fiber Reinforced Polymers, have a complex mechanical behaviour, therefore it is extremely complicated to predict failure and damage. There has been an increasing use of composite materials for structural applications as an alternative to metal due its lightweight and strength properties. Consequently, it is important to consolidate the knowledge about its behaviour under different loads in order to apply them correctly in structural applications. The Carbon Fiber Reinforced Polymer studied in this dissertation is a spread tow carbon fabric with four different arrangements - 0°/-90°, 15°/-75°, 30°/-60° and 45°/-45° under tension loads. A computational tool was developed in order to predict failure and damage propagation in Carbon Fiber Reinforced Polymers specimens. It is an interface program between the software Matlab and ANSYS. A mesh generator algorithm was developed in Matlab in order to automatically model specimens with different arrangements. Afterwards, an incremental iterative analysis is performed using an optimized methodology developed in Crespo’s dissertation [3] which gradually increments the displacement applied to the specimen. This analysis uses ANSYS as a solver, using the finite element method, to calculate the specimen’s mechanical behaviour and stress. The results are exported to Matlab, which applies a proposed failure criterion to the specimen’s elements and initiates ANSYS “killing” the failed elements and applying a new displacement. The program executes several iterations until the specimen’s failure and, in the end, plots the force applied and displacement in the specimen’s end. The numerical models were validated with numerous analysis using experimental and numerical results from articles and dissertations from different authors in order to guarantee the precision of the results and simulations. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-09 2016-09-01T00:00:00Z 2017-06-16T15:18:46Z 2017-06 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10362/21553 |
url |
http://hdl.handle.net/10362/21553 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799137897636429824 |