ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
A three-phase composite material specimen consisting of aggregates, mortar matrix andtheir bonding material is created through the Monte-Carlo method. The Mazars isotropic damageevolution model is used to describe the meso-mechanics damage deterioration of concrete. And thefinite element method is adopted to simulate respectively the uniaxial compression numericalmodels of two, three and full graded specimens with sphere and polyhedron aggregates. Followingare the conclusions from the test results: the ultimate load capacity of arbitrary polyhedronaggregate specimen is greater than that of the sphere one of the same grade; the size effect lawexists in these numerical models of concrete specimens; the stiffness of the polyhedron aggregates’specimen of the same grade is greater than that of the sphere ones’, and the softening curves of thesphere aggregate model are easier than those of the polyhedron by comparison in the softeningphase of stress-strain curves
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.623.pdf
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