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You searched for subject:(Danification). Showing records 1 – 2 of 2 total matches.

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1. Romariz, Luiz André. Dano em placas laminadas devido ao impacto a baixas velocidades.

Degree: Mestrado, Engenharia Mecânica de Projeto de Fabricação, 2008, University of São Paulo

Materiais compósitos laminados possuem uma alta eficiência estrutural, mas que é comprometida pela baixa resistência a cargas de impacto. O objetivo deste trabalho é o desenvolvimento de uma metodologia de simulação numérica para a estimativa de danos causados por cargas de impacto a baixas velocidades em placas de material compósito laminado. Ensaios experimentais foram realizados em placas reforçadas com tecidos de fibra de carbono e matriz de resina epóxi. Foram avaliadas três espessuras. Os carregamentos de impacto com uma massa em queda livre foram pontuais e transversais à placa, com intervalos de energia variando entre 5J e 94J, com velocidades inferiores a 6 m/s. As simulações numéricas utilizaram um programa comercial de elementos finitos com integração explícita. Foram avaliados dois critérios de falha da lâmina. O primeiro é o critério de máxima tensão. O segundo é uma proposta de modificação no critério de falha de Hashin, para sua aplicação em laminados reforçados com tecidos bidirecionais. Também foram avaliados quatro diferentes critérios de degradação da lâmina. As evoluções das forças de contato entre o impactador e a placa foram muito bem representadas numericamente. As áreas e os comprimentos dos danos numéricos foram similares ou maiores que os medidos nos resultados experimentais.

Laminate composite materials have high structural efficiency, however it is jeopardized due the low strength to impact loads. The objective of this work is to develop a numerical simulation methodology that estimates the damage in laminate plates caused by low velocity impact. Experimental tests were performed on laminate plates reinforced with weaven carbon fibers and epoxi resine. Three thickness plates were evaluated. The impact loads were transversal and punctual. They were done with drop-test, the impact energy range is between 5J and 94J, and the velocities were lower than 6m/s. The numerical simulations were done with FEM commercial code with explict integration. Two lamina failure criteria were evaluated. The first is the maximum stress. The second is a proposed modification of the Hashin failure criterion in order to be applied on the fabric laminates. Four lamina degradation criteria were evaluated too. The numerical contatct loads between the plate and impactor were well represented. The numerical damaged areas and lengths were similar or greater than the experimental results.

Advisors/Committee Members: Alves, Marcílio.

Subjects/Keywords: Damage strength; Danification criteria; Failure criteria; Impact; Imperfeições e falhas dos materiais; Laminate composite materials; Materiais compósitos poliméricos; Resistência dos materiais

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Romariz, L. A. (2008). Dano em placas laminadas devido ao impacto a baixas velocidades. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/3/3151/tde-10112008-110839/ ;

Chicago Manual of Style (16th Edition):

Romariz, Luiz André. “Dano em placas laminadas devido ao impacto a baixas velocidades.” 2008. Masters Thesis, University of São Paulo. Accessed December 04, 2020. http://www.teses.usp.br/teses/disponiveis/3/3151/tde-10112008-110839/ ;.

MLA Handbook (7th Edition):

Romariz, Luiz André. “Dano em placas laminadas devido ao impacto a baixas velocidades.” 2008. Web. 04 Dec 2020.

Vancouver:

Romariz LA. Dano em placas laminadas devido ao impacto a baixas velocidades. [Internet] [Masters thesis]. University of São Paulo; 2008. [cited 2020 Dec 04]. Available from: http://www.teses.usp.br/teses/disponiveis/3/3151/tde-10112008-110839/ ;.

Council of Science Editors:

Romariz LA. Dano em placas laminadas devido ao impacto a baixas velocidades. [Masters Thesis]. University of São Paulo; 2008. Available from: http://www.teses.usp.br/teses/disponiveis/3/3151/tde-10112008-110839/ ;


University of Lund

2. Lerbom, Jens. Mellan två riken : Integration, politisk kultur och förnationella identiteter på Gotland 1500–1700.

Degree: 2003, University of Lund

Under the peace treaty of Brömsebro in 1645 the largest island of the Baltic Sea, Gotland, became a part of the Swedish Kingdom. Until then it had been under Danish control, and since the late fifteenth century the Danish authorities had pursued the economic, judicial, administra-tive and ecclesiastical incorporation of the island. This policy was continued, and its scope wide-ned, by the Swedish state after 1645 Both Danish and Swedish approaches to incorporation involved bureaucratization, including the regulation of the local administration, and the legal and tax systems, combined with a more professional corps of state servants. Written documents were increasingly used as an instrument of control. The main purpose of this dissertation is to study the process of incorporating Gotland viewed from ’below’. Central are the Gotland peasants’ own thoughts and patterns of political behaviour during a time of transition.

Subjects/Keywords: History; Swedification; Nationalism; Peasant Elite; Everyday Resistance; Ethnie; Collective Identitiy; Literacy; Orality; Political Culture; Interaction; Bureaucratization; Local Administration; Incorporation; Integration; Communalism; Early Modern; Peasants; Danification; Gotland.; Modern history (up to circa 1800); Tidig modern historia (till ca. 1800)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Lerbom, J. (2003). Mellan två riken : Integration, politisk kultur och förnationella identiteter på Gotland 1500–1700. (Doctoral Dissertation). University of Lund. Retrieved from https://lup.lub.lu.se/record/21470 ; https://portal.research.lu.se/ws/files/61426724/Mellan_tv_riken_Jens_Lerbom.pdf

Chicago Manual of Style (16th Edition):

Lerbom, Jens. “Mellan två riken : Integration, politisk kultur och förnationella identiteter på Gotland 1500–1700.” 2003. Doctoral Dissertation, University of Lund. Accessed December 04, 2020. https://lup.lub.lu.se/record/21470 ; https://portal.research.lu.se/ws/files/61426724/Mellan_tv_riken_Jens_Lerbom.pdf.

MLA Handbook (7th Edition):

Lerbom, Jens. “Mellan två riken : Integration, politisk kultur och förnationella identiteter på Gotland 1500–1700.” 2003. Web. 04 Dec 2020.

Vancouver:

Lerbom J. Mellan två riken : Integration, politisk kultur och förnationella identiteter på Gotland 1500–1700. [Internet] [Doctoral dissertation]. University of Lund; 2003. [cited 2020 Dec 04]. Available from: https://lup.lub.lu.se/record/21470 ; https://portal.research.lu.se/ws/files/61426724/Mellan_tv_riken_Jens_Lerbom.pdf.

Council of Science Editors:

Lerbom J. Mellan två riken : Integration, politisk kultur och förnationella identiteter på Gotland 1500–1700. [Doctoral Dissertation]. University of Lund; 2003. Available from: https://lup.lub.lu.se/record/21470 ; https://portal.research.lu.se/ws/files/61426724/Mellan_tv_riken_Jens_Lerbom.pdf

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