کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
500631 863097 2006 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modelling ballast behaviour under dynamic loading. Part 1: A 2D polygonal discrete element method approach
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Modelling ballast behaviour under dynamic loading. Part 1: A 2D polygonal discrete element method approach
چکیده انگلیسی

Discrete element simulation provides some insight into the alteration of railway ballast after repeated train passings. The present Part 1 is devoted to a 2D model of this granular layer interposed between the deformable ground and the rail sleeper, to which a large number of loading cycles is applied. Ballast grains are modelled as indeformable polygonal solids. A detailed account of the application to this frictional dynamical problem of the Non-Smooth Contact Dynamics numerical method is given. Validation is obtained through comparison with physical experiments performed on assemblies of prismatic mineral grains. Numerical results on the settlement of a track submitted to 20,000 loading cycles or more are presented.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 195, Issues 19–22, 1 April 2006, Pages 2841–2859
نویسندگان
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