Circuit theoretical methods for efficient solution of finite element structural mechanics problems

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buir.advisorAtalar, Abdullah
dc.contributor.authorEkinci, Ahmet Suat
dc.date.accessioned2016-01-08T20:20:26Z
dc.date.available2016-01-08T20:20:26Z
dc.date.issued1999
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.descriptionAnkara : The Department of Electrical and Electronics Engineering and the Institute of Engineering and Sciences of Bilkent Univ., 1999.en_US
dc.descriptionThesis (Ph.D.) -- Bilkent University, 1999.en_US
dc.descriptionIncludes bibliographical references leaves 78-84.en_US
dc.description.abstractShrinking device dimensions in integrated circuit technology made integrated circuits with millions of components a reality. As a result of this advance, electrical circuit simulators that can handle very large number of components have emerged. These programs use new circuit simulation techniques which approximate the system with reduced order models, and can find solutions accurately and quickly. This study proposes formulating the structural mechanics problems using FEM, and then employing the recent speedup techniques used in circuit simulation. This is obtained by generating an equivalent resistor-inductor-capacitor circuit containing controlled sources. We analyze the circuits with general-purpose circuit simulation programs, HSPICE, and an in-house developed circuit simulation program, MAWE, which makes use of generalized asymptotic waveform evaluation (AWE) technique. AWE is a moment matching technique that has been successfully used in circuit simulation for solutions of large sets of equations. Several examples on the analysis of the displacement distributions in rigid bodies have shown that using circuit simulators instead of conventional FEM solution methods improves simulation speed without a significant loss of accuracy. Pole analysis via congruence transformations (PACT) technique is a recent algorithm used for obtaining lower order models for large circuits. For a further reduction in time, we employed a similar algorithm in structural mechanics problems before obtaining the equivalent circuit. The results are very promising.en_US
dc.description.degreePh.D.en_US
dc.description.statementofresponsibilityEkinci, Ahmet Suaten_US
dc.format.extentxii, 85 leavesen_US
dc.identifier.urihttp://hdl.handle.net/11693/18563
dc.language.isoEnglishen_US
dc.publisherBilkent Universityen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectCircuit Simulationen_US
dc.subjectAsymptotic Waveform Evaluation (AWE)en_US
dc.subjectPole Analysis via Congruence Transformations (PACT)en_US
dc.subjectElectrical Modelingen_US
dc.subject.lccTK454 .E35 1999en_US
dc.subject.lcshElectric circuits--Computer simulation.en_US
dc.subject.lcshElectric circuit analysis--Data processing.en_US
dc.subject.lcshSPICE (Computer file).en_US
dc.subject.lcshElectronic circuit design--Data processing.en_US
dc.titleCircuit theoretical methods for efficient solution of finite element structural mechanics problemsen_US
dc.typeThesisen_US

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