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Macroscopic damage modeling for silicon nitride
Author(s) -
Ruck Johannes,
Othmani Yamen,
Lube Tanja,
Khader Iyas,
Kailer Andreas,
Böhlke Thomas
Publication year - 2015
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201510064
Subject(s) - bending , materials science , brittleness , silicon nitride , phenomenological model , ceramic , structural engineering , flexural strength , damage mechanics , silicon , engineering physics , composite material , engineering , physics , finite element method , metallurgy , condensed matter physics
Modeling the damage of brittle materials is of great importance considering a variety of structural components. Prominent examples are high strength engineering ceramics. The present work is concerned with silicon nitride, a material with increasing relevance in industrial applications. In the sense of a hierarchical model structure, effective properties of micromechanical simulations were applied to macroscopic, phenomenological damage models for monotonous and cyclic loading. In the following, both models are introduced and the application of the cyclic damage model to a four point bending test is discussed. (© 2015 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)