{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/5987"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/5987","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Análise numérica de cravação de estacas torpedo modeladas por integral de pressões","abstract":"In deep-water offshore oil exploration, the mooring foundations are usually submitted to high loads in a soil that is, usually, extremely soft. To circumvent this problem, torpedo anchor is frequently used to fix the mooring line on seabed. In this context, this paper presents a new numerical approach to represent the soil reaction of torpedo anchor, in a global analysis tool to model its installation procedure, via a numerical integral of soil pressures on its penetrated surface. Therefore, this method is associated to the weak coupling formulation in time domain, in which the torpedo is represented by a rigid body with six degrees of freedom and the mooring and launching lines are represented by finite elements. The method was developed on in-house program SITUA-Prosim and compared to the classic True model. In this numerical procedure, a typical impact velocity and physical data were used to represent a real launching procedure evaluated in Campos Basin-Brazil. The geometric factors (presence of wings and tip) and the variation of the soil drag coefficient were evaluated as parameters of influence in the embedment depth of the anchor.","abstract_html":"In deep-water offshore oil exploration, the mooring foundations are usually submitted to high loads in a soil that is, usually, extremely soft. To circumvent this problem, torpedo anchor is frequently used to fix the mooring line on seabed. In this context, this paper presents a new numerical approach to represent the soil reaction of torpedo anchor, in a global analysis tool to model its installation procedure, via a numerical integral of soil pressures on its penetrated surface. Therefore, this method is associated to the weak coupling formulation in time domain, in which the torpedo is represented by a rigid body with six degrees of freedom and the mooring and launching lines are represented by finite elements. The method was developed on in-house program SITUA-Prosim and compared to the classic True model. In this numerical procedure, a typical impact velocity and physical data were used to represent a real launching procedure evaluated in Campos Basin-Brazil. The geometric factors (presence of wings and tip) and the variation of the soil drag coefficient were evaluated as parameters of influence in the embedment depth of the anchor.","abstract_has_math":false,"creators":["Bezerra, Carolina Maria Nunes"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Corrêa, Fabrício Nogueira"],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-11","date_published":"2017-11","updated_at":"2026-07-24T01:16:18Z","subjects":["Estacas","Modelo de true","Malha de painéis","Resistência dos materiais","Cisalhamento"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/5987","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Corrêa, Fabrício Nogueira"]},{"key":"dc:creator","label":"Author","values":["Bezerra, Carolina Maria Nunes"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-12-14T16:03:55Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:03:24Z"]},{"key":"dc:date.issued","label":"Date","values":["2017-11"]},{"key":"dc:publisher","label":"Institution","values":["Universidade Federal do Rio de Janeiro"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"]},{"key":"dc:type","label":"Dc Type","values":["Dissertação"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Estacas","Modelo de true","Malha de painéis","Resistência dos materiais","Cisalhamento"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11422/5987"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["In deep-water offshore oil exploration, the mooring foundations are usually submitted to high loads in a soil that is, usually, extremely soft. To circumvent this problem, torpedo anchor is frequently used to fix the mooring line on seabed. In this context, this paper presents a new numerical approach to represent the soil reaction of torpedo anchor, in a global analysis tool to model its installation procedure, via a numerical integral of soil pressures on its penetrated surface. Therefore, this method is associated to the weak coupling formulation in time domain, in which the torpedo is represented by a rigid body with six degrees of freedom and the mooring and launching lines are represented by finite elements. The method was developed on in-house program SITUA-Prosim and compared to the classic True model. In this numerical procedure, a typical impact velocity and physical data were used to represent a real launching procedure evaluated in Campos Basin-Brazil. The geometric factors (presence of wings and tip) and the variation of the soil drag coefficient were evaluated as parameters of influence in the embedment depth of the anchor."]},{"key":"dc:title","label":"Title","values":["Análise numérica de cravação de estacas torpedo modeladas por integral de pressões"]}]}],"canonical_facts":{"dc:contributor.advisor":["Corrêa, Fabrício Nogueira"],"dc:creator":["Bezerra, Carolina Maria Nunes"],"dc:date.accessioned":["2018-12-14T16:03:55Z"],"dc:date.available":["2026-05-16T03:03:24Z"],"dc:date.issued":["2017-11"],"dc:description.abstract":["In deep-water offshore oil exploration, the mooring foundations are usually submitted to high loads in a soil that is, usually, extremely soft. To circumvent this problem, torpedo anchor is frequently used to fix the mooring line on seabed. In this context, this paper presents a new numerical approach to represent the soil reaction of torpedo anchor, in a global analysis tool to model its installation procedure, via a numerical integral of soil pressures on its penetrated surface. Therefore, this method is associated to the weak coupling formulation in time domain, in which the torpedo is represented by a rigid body with six degrees of freedom and the mooring and launching lines are represented by finite elements. The method was developed on in-house program SITUA-Prosim and compared to the classic True model. In this numerical procedure, a typical impact velocity and physical data were used to represent a real launching procedure evaluated in Campos Basin-Brazil. The geometric factors (presence of wings and tip) and the variation of the soil drag coefficient were evaluated as parameters of influence in the embedment depth of the anchor."],"dc:identifier.uri":["http://hdl.handle.net/11422/5987"],"dc:language":["por"],"dc:publisher":["Universidade Federal do Rio de Janeiro"],"dc:publisher.department":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"],"dc:rights":["Acesso Aberto"],"dc:subject":["Estacas","Modelo de true","Malha de painéis","Resistência dos materiais","Cisalhamento"],"dc:title":["Análise numérica de cravação de estacas torpedo modeladas por integral de pressões"],"dc:type":["Dissertação"]},"updated_at":"2026-07-24T01:16:18Z"}