کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
619105 1455052 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Deformation and damage of a crossing nose due to wheel passages
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Deformation and damage of a crossing nose due to wheel passages
چکیده انگلیسی

The cyclic deformation of a crossing nose in a railway turnout due to repeated wheel passages is investigated by numerical simulations with the finite element code ABAQUS. An explicit finite element method is used to determine the dynamic response of the wheel–rail system. More detailed studies on stresses and strains in the crossing nose are performed on a quasi-static model calculated by the implicit finite element method. For both models nonlinear kinematic hardening is defined for the material behaviour in the finite element simulation. To predict the early evolution of damage, a damage indicator concept for ductile materials is integrated in the numerical calculations. A cast manganese crossing is compared to a crossing consisting of a steel composite. From the results obtained, an explanation for the good performance of manganese crossings observed in operated tracks is found. The study provides a method for the further research on fatigue and wear of crossings aiming at an improvement of crossings.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 265, Issues 9–10, 30 October 2008, Pages 1431–1438
نویسندگان
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