000021430 001__ 21430
000021430 005__ 20170522124354.0
000021430 04107 $$aeng
000021430 046__ $$k2017-05-15
000021430 100__ $$aŠeveček, O.
000021430 24500 $$aINFLUENCE OF CERAMIC FOAM PARAMETERS ON THE FRACTURE BEHAVIOUR UPON THE TENSILE TEST

000021430 24630 $$n23.$$pEngineering Mechanics 2017
000021430 260__ $$bBrno University of Technology, Institute of Solid Mechanics, Mechatronics and Biomechanics, Brno
000021430 506__ $$arestricted
000021430 520__ $$2eng$$aThe contribution deals with numerical simulation of response of the open cell ceramic foam to tensile loading and attempts to predict experimental fracture-mechanics behaviour of the foams using numerical FE model composed of beam elements. Models of different structure irregularity (including regular one) are considered and generated using 3D Voronoi tessellation technique. Complete fracture of the model is simulated by iterative FE simulations where in each step, one strut with maximal tensile stress (higher than the material tensile strength) is removed – until complete separation of the model in two parts. Critical forces, leading to complete breakage of the foam structure, together with final fracture “surfaces”, are investigated and compared for both regular and irregular structures. It is shown that the regular foam structure, composed of Kelvin cells, exhibit generally 10 – 20 % higher fracture resistance than the irregular foam structures and also that structures with smaller cells should be more fracture resistant than the structures with bigger cells.

000021430 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021430 653__ $$aCeramic foam, Fracture, FEM, Voronoi tessellation, Tensile test.

000021430 7112_ $$aEngineering Mechanics 2017$$cSvratka, CZ$$d2017-05-15 / 2017-05-18$$gEM2017
000021430 720__ $$aŠeveček, O.$$iKotoul, M.$$iMajer, Z.
000021430 8560_ $$ffischerc@itam.cas.cz
000021430 8564_ $$s1093311$$uhttps://invenio.itam.cas.cz/record/21430/files/0862.pdf$$yOriginal version of the author's contribution in proceedings, page 862, section FRA.
000021430 962__ $$r21225
000021430 980__ $$aPAPER