000004816 001__ 4816
000004816 005__ 20141119144556.0
000004816 04107 $$aeng
000004816 046__ $$k2002-06-02
000004816 100__ $$aParrod, Perrine
000004816 24500 $$aMORPHOLOGY-BASED MODELS FOR WOOD AND WOOD COMPOSITES

000004816 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004816 260__ $$bColumbia University in the City of New York
000004816 506__ $$arestricted
000004816 520__ $$2eng$$aIn this study we are exploring ways to couple experimental measurements with numerical simulations of the mechanical properties of wood. For our numerical simulations we have adopted a discrete element approach, where wood cells or bundles of wood cells may be modeled as discrete elements that interact with other similar elements. Wood cell bundles are modeled as tubular beams having unique strength and stiffness properties. Bundles are connected by additional elements with independent strength and stiffness properties. Effectively the solid piece of wood becomes a structural system that can be analyzed for deformations and damage by conventional methods. The advantage of this approach over a traditional continuum-based approach is that the different physical phenomena that contribute to material behavior can be isolated and measured experimentally. In this preliminary work we seek to numerically simulate both the microstructural changes and the gross load deformation response in small wood specimens subjected to longitudinal and transverse uniaxial tension, and shear. Corresponding microstructural changes are captured by a digital microscopy system. The results show the model to be effective at capturing both microstructural damage and load-deformation response.

000004816 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004816 653__ $$awood mechanics, lattice modeling, strain softening

000004816 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004816 720__ $$aParrod, Perrine$$iLandis, Eric N.$$iDavids, William G.$$iVasic, Svetlana
000004816 8560_ $$ffischerc@itam.cas.cz
000004816 8564_ $$s1210913$$uhttp://invenio.itam.cas.cz/record/4816/files/376.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004816 962__ $$r4594
000004816 980__ $$aPAPER