Discrete element simulations of assemblies of two-dimensional irregularly-shaped particles and effects of particles shape on mechanical behavior

سال انتشار: 1388
محل انتشار: هشتمین کنگره بین المللی مهندسی عمران
کد COI اختصاصی: ICCE08_764
زبان مقاله: انگلیسی
تعداد مشاهده: 1995

نویسندگان

Graduate student of geotechnical engineering, School of civil engineering, University of Tehran, Tehran, Iran

Associate professor, School of civil engineering, University of Tehran, Tehran, Iran

چکیده

Several researchers have investigated the effects of grain’s shape on the physical behavior of granular materials. The results of researches show that grain’s shape has considerable effects on the engineering properties of their assembly in granular soils. Therefore adequate grain shape modeling is quite important. A discrete element method has been developed to simulate assemblies of two-dimensional irregularlyshaped particles to study the mechanical behavior of granular materials. Each particle’s shape is assumed to be represented by combining circular elements so that adequate particle shape modeling is obtained. The program DISC (Bathurst, 1985) which is a modified version of BALL Cundall, 1978) was adopted and modified to simulate assembly of particles which are represented according to above assumption. Then, series of biaxial tests are conducted on assemblies of particles with different shapes. The focus of this study is on effects of grain’s shape on echanical behavior of simulated granular material. Results for assemblies of angular grains and rounded grains are presented in terms of macro mechanical behavior.

کلیدواژه ها

Irregular grain shape, Discrete element simulation, Numerical modeling

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.