{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/2902"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/2902","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Fundações de máquinas rotativas sobre estacas","abstract":"This work is supposed to be a guide for the design computations of foundations under reciprocating engines on piles. Basic recommendations, suggestions, typical values and correlations were introduced as support to the elaboration of a typical design. We introduce the classic theory of vibrations of massive machine foundations resting on a semi-infinite elastic solid, proposed by Rausch (1943), and a theory by us proposed sufficiently exact within the actual \"state-of-the-art\" of machine foundations based on the theory of Matrix Structural Analysis. We have also studied how to obtain unbalanced inertial forces in Reciprocating Engines and made comments on its dynamic balance. Comparisons of the two theories presented with results found in technical magazines were included. Deduction of consistent mass matrix for an element embedded in the soil represented the greatest contribution of this thesis for the technical-scientific world since we don't find such development in any book or technical magazines consulted. Computer programming \"flow-charts\" elaborated for calculating results and used in the comparisons of the two theories were presented as a help to concerning research to which it is necessary to employ digital computers.","abstract_html":"This work is supposed to be a guide for the design computations of foundations under reciprocating engines on piles. Basic recommendations, suggestions, typical values and correlations were introduced as support to the elaboration of a typical design. We introduce the classic theory of vibrations of massive machine foundations resting on a semi-infinite elastic solid, proposed by Rausch (1943), and a theory by us proposed sufficiently exact within the actual "state-of-the-art" of machine foundations based on the theory of Matrix Structural Analysis. We have also studied how to obtain unbalanced inertial forces in Reciprocating Engines and made comments on its dynamic balance. Comparisons of the two theories presented with results found in technical magazines were included. Deduction of consistent mass matrix for an element embedded in the soil represented the greatest contribution of this thesis for the technical-scientific world since we don't find such development in any book or technical magazines consulted. Computer programming "flow-charts" elaborated for calculating results and used in the comparisons of the two theories were presented as a help to concerning research to which it is necessary to employ digital computers.","abstract_has_math":false,"creators":["Melo, Carlos Emanuel de"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Velloso, Dirceu de Alencar"],"committee_chairs":[],"committee_members":[],"year":1978,"date_issued":"1978-07","date_published":"1978-07","updated_at":"2026-07-24T01:15:56Z","subjects":["Estacas","Fundações e escavações"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/2902","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Velloso, Dirceu de Alencar"]},{"key":"dc:creator","label":"Author","values":["Melo, Carlos Emanuel de"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2017-09-25T16:33:17Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:03:28Z"]},{"key":"dc:date.issued","label":"Date","values":["1978-07"]},{"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","Fundações e escavações"]}]},{"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/11422/2902"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This work is supposed to be a guide for the design computations of foundations under reciprocating engines on piles. Basic recommendations, suggestions, typical values and correlations were introduced as support to the elaboration of a typical design. We introduce the classic theory of vibrations of massive machine foundations resting on a semi-infinite elastic solid, proposed by Rausch (1943), and a theory by us proposed sufficiently exact within the actual \"state-of-the-art\" of machine foundations based on the theory of Matrix Structural Analysis. We have also studied how to obtain unbalanced inertial forces in Reciprocating Engines and made comments on its dynamic balance. Comparisons of the two theories presented with results found in technical magazines were included. Deduction of consistent mass matrix for an element embedded in the soil represented the greatest contribution of this thesis for the technical-scientific world since we don't find such development in any book or technical magazines consulted. Computer programming \"flow-charts\" elaborated for calculating results and used in the comparisons of the two theories were presented as a help to concerning research to which it is necessary to employ digital computers."]},{"key":"dc:title","label":"Title","values":["Fundações de máquinas rotativas sobre estacas"]}]}],"canonical_facts":{"dc:contributor.advisor":["Velloso, Dirceu de Alencar"],"dc:creator":["Melo, Carlos Emanuel de"],"dc:date.accessioned":["2017-09-25T16:33:17Z"],"dc:date.available":["2026-05-16T03:03:28Z"],"dc:date.issued":["1978-07"],"dc:description.abstract":["This work is supposed to be a guide for the design computations of foundations under reciprocating engines on piles. Basic recommendations, suggestions, typical values and correlations were introduced as support to the elaboration of a typical design. We introduce the classic theory of vibrations of massive machine foundations resting on a semi-infinite elastic solid, proposed by Rausch (1943), and a theory by us proposed sufficiently exact within the actual \"state-of-the-art\" of machine foundations based on the theory of Matrix Structural Analysis. We have also studied how to obtain unbalanced inertial forces in Reciprocating Engines and made comments on its dynamic balance. Comparisons of the two theories presented with results found in technical magazines were included. Deduction of consistent mass matrix for an element embedded in the soil represented the greatest contribution of this thesis for the technical-scientific world since we don't find such development in any book or technical magazines consulted. Computer programming \"flow-charts\" elaborated for calculating results and used in the comparisons of the two theories were presented as a help to concerning research to which it is necessary to employ digital computers."],"dc:identifier.uri":["http://hdl.handle.net/11422/2902"],"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","Fundações e escavações"],"dc:title":["Fundações de máquinas rotativas sobre estacas"],"dc:type":["Dissertação"]},"updated_at":"2026-07-24T01:15:56Z"}