کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
157257 456967 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Compression mechanics of granule beds: A combined finite/discrete element study
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Compression mechanics of granule beds: A combined finite/discrete element study
چکیده انگلیسی

Compression of three-dimensional beds comprising 1000 plastically deforming initially spherical granules is investigated by using the combined finite/discrete element (FE/DE) method. The material model is formulated within the framework of multiplicative plasticity, and utilizes a density-dependent elliptic yield surface that allows porous particles to both deform and to densify plastically, whereas only volume-preserving plastic deformation is possible for nonporous ones. Granules with different characteristics (yield stress and initial porosity) are studied, and the relationship between the single-granule properties and the global compression behaviour of the granule bed is investigated. It is demonstrated that the FE/DE method may shed light on the deformation and densification behaviour of individual granules, since the size and shape of each granule are continually determined as an integral part of the solution procedure, and that the method thus provides a comprehensive picture of the processes occurring during confined compression of granular materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 65, Issue 8, 15 April 2010, Pages 2464–2471
نویسندگان
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