Abstract
Porous materials are formed in nature and by man by many differentprocesses. The nature of the pore space, which is usually the space leftover as the solid backbone forms, is often controlled by the morphology ofthe solid backbone. In particular, sometimes the backbone is made from therandom deposition of elongated crystals, which makes analytical techniquesparticularly difficult to apply. This paper discusses simple two- andthree-dimensional porous models in which the solid backbone is formed by differentrandom arrangements of elongated solid objects (bars/crystals). We use ageneral purpose elastic finite element routine designed for use on imagesof random porous composite materials to study the linear elastic propertiesof these models. Both Young's modulus and Poisson's ratio depend on theporosity and the morphology of the pore space, as well as on the propertiesof the individual solid phases. The models are random digital image models,so that the effects of statistical fluctuation, finite size effect anddigital resolution error must be carefully quantified. It is shown how toaverage the numerical results over random crystal orientation properly. Therelations between two and three dimensions are also explored, as mostmicrostructural information comes from two-dimensional images, while mostreal materials and experiments are three dimensional.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Modelling and Simulation in Materials Science and Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
