{"id":{"repo_id":"mit","oai_identifier":"oai:dspace.mit.edu:1721.1/67792"},"canonical_url":"https://search.dev.ndltd.org/etd/mit/oai:dspace.mit.edu:1721.1/67792","repository":{"repo_id":"mit","name":"MIT","base_url":"https://dspace.mit.edu/oai/request"},"display":{"title":"Design and parametric simulation of radially oriented electromagnetic actuators","abstract":"This thesis presents the design and simulation of an electromagnetic actuator system capable of delivering large pulses of radial force onto a cylindrical surface. Due to its robust design, simple control scheme, and large output force capability, the actuator design is developed to be considered for wellbore manipulation and other downhole oil exploration and production activities. The complete simulation - including capacitor bank power supply, solid state switching circuit, transducer, and target formation - is a thirteen value lumped parameter model. The simulation was used heavily in the design and refining of two experimental prototype systems. These prototypes showed excellent model-experiment matching. The experimental prototypes are 2.5\" radius, 12\" length cylindrical transducers that exert nearly 10 psi onto a simulated rock formation with 2 MN/m radial stiffness, increasing the formation radius 3.5 mm during 5 ms pulse events. It is with this experimentally validated simulation that we project forward a manufacturable system capable of exerting pulses of hundreds of psi in magnitude over durations of 1 - 10 ms onto wellbore sized cylindrical surfaces.","abstract_html":"This thesis presents the design and simulation of an electromagnetic actuator system capable of delivering large pulses of radial force onto a cylindrical surface. Due to its robust design, simple control scheme, and large output force capability, the actuator design is developed to be considered for wellbore manipulation and other downhole oil exploration and production activities. The complete simulation - including capacitor bank power supply, solid state switching circuit, transducer, and target formation - is a thirteen value lumped parameter model. The simulation was used heavily in the design and refining of two experimental prototype systems. These prototypes showed excellent model-experiment matching. The experimental prototypes are 2.5" radius, 12" length cylindrical transducers that exert nearly 10 psi onto a simulated rock formation with 2 MN/m radial stiffness, increasing the formation radius 3.5 mm during 5 ms pulse events. It is with this experimentally validated simulation that we project forward a manufacturable system capable of exerting pulses of hundreds of psi in magnitude over durations of 1 - 10 ms onto wellbore sized cylindrical surfaces.","abstract_has_math":false,"creators":["Bosworth, William R., Ph. D. Massachusetts Institute of Technology"],"institution":"Massachusetts Institute of Technology","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":"Massachusetts Institute of Technology. Dept. of Mechanical Engineering.","school":null,"contributors":[],"advisors":["Jeffrey H. Lang and Alexander H. Slocum."],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011","date_published":"2011","updated_at":"2026-07-22T22:21:16Z","subjects":["Mechanical Engineering."],"languages":["eng"],"rights":["M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission."],"rights_urls":["http://dspace.mit.edu/handle/1721.1/7582"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/1721.1/67792","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Jeffrey H. Lang and Alexander H. Slocum."]},{"key":"dc:contributor.department","label":"Department","values":["Massachusetts Institute of Technology. Dept. of Mechanical Engineering."]},{"key":"dc:contributor.other","label":"Dc Contributor Other","values":["Massachusetts Institute of Technology. Dept. of Mechanical Engineering."]},{"key":"dc:creator","label":"Author","values":["Bosworth, William R., Ph. D. Massachusetts Institute of Technology"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2011-12-19T18:51:59Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2011-12-19T18:51:59Z"]},{"key":"dc:date.issued","label":"Date","values":["2011"]},{"key":"dc:publisher","label":"Institution","values":["Massachusetts Institute of Technology"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Mechanical Engineering."]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission."]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://dspace.mit.edu/handle/1721.1/7582"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/1721.1/67792"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2011.","Cataloged from PDF version of thesis.","Includes bibliographical references (p. 91-92)."]},{"key":"dc:description.abstract","label":"Abstract","values":["This thesis presents the design and simulation of an electromagnetic actuator system capable of delivering large pulses of radial force onto a cylindrical surface. Due to its robust design, simple control scheme, and large output force capability, the actuator design is developed to be considered for wellbore manipulation and other downhole oil exploration and production activities. The complete simulation - including capacitor bank power supply, solid state switching circuit, transducer, and target formation - is a thirteen value lumped parameter model. The simulation was used heavily in the design and refining of two experimental prototype systems. These prototypes showed excellent model-experiment matching. The experimental prototypes are 2.5\" radius, 12\" length cylindrical transducers that exert nearly 10 psi onto a simulated rock formation with 2 MN/m radial stiffness, increasing the formation radius 3.5 mm during 5 ms pulse events. It is with this experimentally validated simulation that we project forward a manufacturable system capable of exerting pulses of hundreds of psi in magnitude over durations of 1 - 10 ms onto wellbore sized cylindrical surfaces."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["S.M."]},{"key":"dc:title","label":"Title","values":["Design and parametric simulation of radially oriented electromagnetic actuators"]}]}],"canonical_facts":{"dc:contributor.advisor":["Jeffrey H. Lang and Alexander H. Slocum."],"dc:contributor.department":["Massachusetts Institute of Technology. Dept. of Mechanical Engineering."],"dc:contributor.other":["Massachusetts Institute of Technology. Dept. of Mechanical Engineering."],"dc:creator":["Bosworth, William R., Ph. D. Massachusetts Institute of Technology"],"dc:date.accessioned":["2011-12-19T18:51:59Z"],"dc:date.available":["2011-12-19T18:51:59Z"],"dc:date.issued":["2011"],"dc:description":["Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2011.","Cataloged from PDF version of thesis.","Includes bibliographical references (p. 91-92)."],"dc:description.abstract":["This thesis presents the design and simulation of an electromagnetic actuator system capable of delivering large pulses of radial force onto a cylindrical surface. Due to its robust design, simple control scheme, and large output force capability, the actuator design is developed to be considered for wellbore manipulation and other downhole oil exploration and production activities. The complete simulation - including capacitor bank power supply, solid state switching circuit, transducer, and target formation - is a thirteen value lumped parameter model. The simulation was used heavily in the design and refining of two experimental prototype systems. These prototypes showed excellent model-experiment matching. The experimental prototypes are 2.5\" radius, 12\" length cylindrical transducers that exert nearly 10 psi onto a simulated rock formation with 2 MN/m radial stiffness, increasing the formation radius 3.5 mm during 5 ms pulse events. It is with this experimentally validated simulation that we project forward a manufacturable system capable of exerting pulses of hundreds of psi in magnitude over durations of 1 - 10 ms onto wellbore sized cylindrical surfaces."],"dc:description.degree":["S.M."],"dc:identifier.uri":["http://hdl.handle.net/1721.1/67792"],"dc:language.iso":["eng"],"dc:publisher":["Massachusetts Institute of Technology"],"dc:rights":["M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission."],"dc:rights.uri":["http://dspace.mit.edu/handle/1721.1/7582"],"dc:subject":["Mechanical Engineering."],"dc:title":["Design and parametric simulation of radially oriented electromagnetic actuators"],"dc:type":["Thesis"]},"updated_at":"2026-07-22T22:21:16Z"}