کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6711027 503320 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Methods to project plasticity models onto the contact surface applied to soil structure interactions
ترجمه فارسی عنوان
روش های طراحی مدل های پلاستیکی بر روی سطح تماس، اعمال شده به تعامل ساختار خاک
کلمات کلیدی
مکانیک تماس روش عنصر محدود روش ملات، قوانین اصطکاک، استراتژی های پیش بینی، مکانیک خاک، تعاملات ساختاری خاک،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
In this work two new concepts for a direct application of plasticity models within a frictional contact description are developed. These concepts can be used in conjunction with all different kinds of contact formulations and solution methods. Additionally, all types of plasticity models can be projected onto the contact surface. The advantage of these concepts is shown exemplary in the modeling process of soil-structure interactions where the projected plasticity models are able to describe the soil behavior at the contact surface. The numerical implementation of the new frictional relations is based on the Mortar method. A new type of mixed formulation is also introduced combining the augmented Lagrangian method to enforce the normal contact constraint with the penalty regularization written in Hellinger-Reissner form to implement the tangential contact behavior. This reformulation leads to a reduction of the CPU time compared to the standard penalty regularization, if the Mortar method is used. Finally, the numerical investigation of a direct shear test shows the accurate reproduction of the typical stress-strain relation of the soil at the contact surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers and Geotechnics - Volume 65, April 2015, Pages 187-198
نویسندگان
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