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dc.contributor.advisorHarusampath, Dineshkumar
dc.contributor.authorPadhee, Srikant Sekhar
dc.date.accessioned2014-09-08T07:09:25Z
dc.date.accessioned2018-07-31T05:15:37Z
dc.date.available2014-09-08T07:09:25Z
dc.date.available2018-07-31T05:15:37Z
dc.date.issued2014-09-08
dc.date.submitted2011
dc.identifier.urihttps://etd.iisc.ac.in/handle/2005/2381
dc.identifier.abstracthttp://etd.iisc.ac.in/static/etd/abstracts/3064/G25238-Abs.pdfen_US
dc.description.abstractComposite materials show heterogeneity at different length scales. hence concurrent multiscale analysis is the only reliable method to analyze them. But unfortunately there is no concurrent multi-scale strategy that is efficient, and accurate while addressing all kinds of problems. This lack of reliability is partly because there is no micro-mechanical model which inherently keeps all relevent global information with it. This thesis tries to fill this gap. The presented micro-mechanical model not only homogenizes the micro-structure but also keeps the global information with it. Most of the micro-mechanical models in the literature extract the Representative Volume Element (RVE) from the continuum for analysis which results in loss of information and accuracy. In the present approach also, the RVE has been extracted from the continuum but with the major difference that all the macro/meso-scopic parameters are accounted for. Five macro/meso-scopic one dimensional parameters have been defined which completely define the effect of continuum. 11 for one dimensional stretch, _1 for torsion, __ (_ = 2, 3) for bending and _33 for uniform pressurization due to the presence of the continuum. Further, the above macro/meso-scopic parameters are proven, by the asymptotic, theory to be constant at a cross section but vary, in general, over the length of the fiber. Hence, the analysis is valid for any location and is not restricted to any local domain. Three major problems have been addressed: • Homogenization and analysis of RVE without any defects • Homogenization and analysis of RVE with fiber-matrix de-bonding • Homogenization and analysis of RVE with radial matrix cracking. Variational Asymptotic Method (VAM) has been used to solve the above mentioned problems analytically. The results have been compared against standard results in the literature and against 3D FEA. At the end, results for “Radial deformation due to torsion” problem will be presented which was solved “accidentally.”en_US
dc.language.isoen_USen_US
dc.relation.ispartofseriesG25238en_US
dc.subjectComposite Materialsen_US
dc.subjectTorsion Methoden_US
dc.subjectVariational Asymptotic Method (VAM)en_US
dc.subjectComposite Cylinders Modelen_US
dc.subjectRepresentative Volume Element (RVE)en_US
dc.subjectFiber Reinforced Compositesen_US
dc.subjectMicromechanicsen_US
dc.subjectMicro-mechanical Modelen_US
dc.subjectMatrix Crackingen_US
dc.subject.classificationMaterials Scienceen_US
dc.titleA Synergetic Micromechanics Model For Fiber Reinforced Compositesen_US
dc.typeThesisen_US
dc.degree.namePhDen_US
dc.degree.levelDoctoralen_US
dc.degree.disciplineFaculty of Engineeringen_US


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