Grading has long been recognised to critically influence the mechanical behaviour of ballast.To identify the ballast gra......

Ballast is a layer composed of crushed stone basically with diameters of 20-60 mm,on which sleepers and rails are set.Ba......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

This paper presents the results of field and laboratory tests of railway ballast.Field tests were aimed to study vibrati......

This paper presents a high intensity discharge(HID) lamp for automotive illumination.A novel type of ballast for HID is ......

The superior performance of high intensity discharge(HID) headlamp is clearly shown for luxury sedans, and the lamp lumi......

选取四种典型道砟,采用三维扫描方法获取道砟模型,再运用EDEM软件采用簇颗粒方法手动创建道砟离散元模型,探究了满足铁道行业标准......