0000000000496347

AUTHOR

I. Beverte

showing 2 related works from this author

Calculation of Dependent Elastic Constants of Plastic Foams with a Pronounced Strut-Like Structure

2003

Seven dependent elastic constants of monotropic plastic foams with an expressed strut-like structure are calculated. For this purpose, the basic results of the previously elaborated mathematical model for light-weight plastic foams is used. The model includes a model cell of local structure for monotropic/isotropic plastic foams and an ensemble of structural elements, which allows one to calculate the seven dependent elastic constants, taking into account the pronounced polydispersity of the structure of plastic foams. The numerical values of the constants are compared with the available experimental data, and a satisfactory agreement is found to exist. As a final result, a full set of gene…

chemistry.chemical_classificationMaterials sciencePolymers and PlasticsGeneral MathematicsIsotropyStructure (category theory)PolymerCondensed Matter PhysicsLocal structurePoisson's ratioCondensed Matter::Soft Condensed MatterBiomaterialssymbols.namesakechemistryMechanics of MaterialsSolid mechanicsCeramics and CompositessymbolsComposite materialMechanics of Composite Materials
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Estimation of the elastic constants of highly porous cellular plastics reinforced with fibres embedded in foam struts

2015

In order to enhance the mechanical properties of polymer foams, fillers of different materials and sizes are being applied. Fibrous fillers shorter than the characteristic foam cell dimensions have the potential of efficient reinforcement, due to their high aspect ratio, without detrimentally interfering with foam structure. A theoretical model is developed for evaluation of the effect of filler on foam stiffness. The elastic response of rigid polymer foams filled with short fibres, of length commensurable with that of foam struts, is modelled by using the orientational averaging technique. Explicit expressions for components of the stiffness tensor of composite foams are derived in terms …

chemistry.chemical_classificationMaterials scienceMechanical EngineeringComposite numberStiffness02 engineering and technologyPolymer021001 nanoscience & nanotechnologyStructural elementchemistry.chemical_compound020303 mechanical engineering & transports0203 mechanical engineeringchemistryMechanics of MaterialsHighly porousMaterials ChemistryCeramics and CompositesmedicineComposite materialElasticity (economics)medicine.symptom0210 nano-technologyPolyurethaneStiffness matrixJournal of Composite Materials
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