TY - GEN TI - DISPLACEMENT FIELD ANALYSIS IN WEDGE SPLITTING TEST\nSPECIMEN BY ODM METHOD T3 - Conference Structural Reliability/ Modelling in mechanics 2018 AU - Seitl, S. AB - Multi-parameter fracture mechanics is nowadays quite extensively applied when cracked\nstructures/specimens are investigated. The reason is that it has been shown that it can be\nhelpful and bring more accurate results when fracture processes happen in a larger\nregion around the crack tip, what can be typical for material like concrete or other\nmaterials with quasi-brittle behaviour. Various relative crack length configurations have\nbeen chosen in order to investigate the importance of the higher-order terms of the\nWilliams power expansion on the crack-tip stress field distribution in Wedge splitting\ntest specimen. The higher-order terms are calculated by means of the over-deterministic\nmethod from displacements of nodes around the crack tip obtained by a finite element\nanalysis in different radial distances from the crack tip. The effect of the constraint level\nis investigated. Although the third and higher terms of the Williams series are very often\nneglected, their influence on the opening stress values is investigated. SN - 978-80-248-4175-5 UR - http://hdl.handle.net/11104/0289255 UR - http://www.nusl.cz/ntk/nusl-389931 A2 - Malíková, Lucie A2 - Růžička, V. A2 - Merta, I. A2 - Miarka, P. LA - eng KW - ODM, WST KW - stress intensity factor KW - Williams series KW - FEM KW - displacement KW - constraint KW - WST PY - 2018 PB - Ústav fyziky materiálů, Žižkova 22, 616 62 Brno, http://www.ipm.cz/ ER -