Please use this identifier to cite or link to this item: https://doi.org/10.1002/nag.1127
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dc.titleEffective block diagonal preconditioners for Biot's consolidation equations in piled-raft foundations
dc.contributor.authorChaudhary, K.B.
dc.contributor.authorPhoon, K.K.
dc.contributor.authorToh, K.C.
dc.date.accessioned2014-06-17T05:29:44Z
dc.date.available2014-06-17T05:29:44Z
dc.date.issued2013-06-10
dc.identifier.citationChaudhary, K.B., Phoon, K.K., Toh, K.C. (2013-06-10). Effective block diagonal preconditioners for Biot's consolidation equations in piled-raft foundations. International Journal for Numerical and Analytical Methods in Geomechanics 37 (8) : 871-892. ScholarBank@NUS Repository. https://doi.org/10.1002/nag.1127
dc.identifier.issn03639061
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/59027
dc.description.abstractThe finite element (FE) simulation of large-scale soil-structure interaction problems (e.g. piled-raft, tunnelling, and excavation) typically involves structural and geomaterials with significant differences in stiffness and permeability. The symmetric quasi-minimal residual solver coupled with recently developed generalized Jacobi, modified symmetric successive over-relaxation (MSSOR), or standard incomplete LU factorization (ILU) preconditioners can be ineffective for this class of problems. Inexact block diagonal preconditioners that are inexpensive approximations of the theoretical form are systematically evaluated for mitigating the coupled adverse effects because of such heterogeneous material properties (stiffness and permeability) and because of the percentage of the structural component in the system in piled-raft foundations. Such mitigation led the proposed preconditioners to offer a significant saving in runtime (up to more than 10 times faster) in comparison with generalized Jacobi, modified symmetric successive over-relaxation, and ILU preconditioners in simulating piled-raft foundations. © 2012 John Wiley & Sons, Ltd.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1002/nag.1127
dc.sourceScopus
dc.subjectBiot's consolidation equations
dc.subjectBlock diagonal preconditioner
dc.subjectHeterogeneous materials
dc.subjectPiled-raft foundation problem
dc.subjectSymmetric quasi minimal residual method
dc.typeArticle
dc.contributor.departmentCIVIL & ENVIRONMENTAL ENGINEERING
dc.contributor.departmentMATHEMATICS
dc.description.doi10.1002/nag.1127
dc.description.sourcetitleInternational Journal for Numerical and Analytical Methods in Geomechanics
dc.description.volume37
dc.description.issue8
dc.description.page871-892
dc.description.codenIJNGD
dc.identifier.isiut000318950400006
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