000004854 001__ 4854
000004854 005__ 20141119144559.0
000004854 04107 $$aeng
000004854 046__ $$k2002-06-02
000004854 100__ $$aPanneerselvam, Dinesh
000004854 24500 $$aA NONLINEAR VISCOELASTIC MODEL FOR CONCRETE’S CREEP AND CREEP FAILURE

000004854 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004854 260__ $$bColumbia University in the City of New York
000004854 506__ $$arestricted
000004854 520__ $$2eng$$aThe constitutive behavior of concrete material has always been a prime area of research for many years. In this work a new nonlinear viscoelastic model for the behavior of concrete is presented. The model has the ability to describe concrete’s creep and also creep failure and therefore its failure envelope, as it was obtained by the pioneering experiments of Rusch (1965). The proposed model is an important modification and extension of the “The Modified Kuhn Model of Linear Viscoelasticity”, developed by J. Lubliner and Panoskaltsis (1992). In the present work a non-linear creep function is introduced and equivalently a non-linear evolution equation for its internal variables. The creep function is then appropriately modified to obtain the failure curve of concrete also. The model has been validated against experimental results.

000004854 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004854 653__ $$aNonlinearity, viscoelasticity creep, failure, concrete, internal variables, creep function, damage, probabilistic failure, nonlinear optimization, parameter estimation

000004854 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004854 720__ $$aPanneerselvam, Dinesh$$iPanoskaltsis, Vassilis P.
000004854 8560_ $$ffischerc@itam.cas.cz
000004854 8564_ $$s641563$$uhttp://invenio.itam.cas.cz/record/4854/files/436.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004854 962__ $$r4594
000004854 980__ $$aPAPER