Fracture mechanics based design of a railway wheel made of austempered ductile iron
Fracture mechanics based design of a railway wheel made of austempered ductile iron
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DOI：
10.1016/j.engfracmech.2003.10.007
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发表时间：
2005
影响因子：
5.4
通讯作者：
M. Kuna;M. Springmann;K. Mädler;P. Hübner;G. Pusch
中科院分区：
文献类型：
--
作者：
M. Kuna;M. Springmann;K. Mädler;P. Hübner;G. Pusch
本文对含石墨球墨等温淬火球铁(ADI)制造的铁路车轮在静载荷和循环载荷作用下的断裂力学性能进行了数值分析。重点放在ADI车轮防止断裂和疲劳裂纹扩展的安全尺寸上。因此，假设裸露处存在裂纹状缺陷，进行了线弹性断裂力学分析。评估依赖于ADI材料的断裂力学强度参数，这些参数是在静态和循环载荷下通过实验确定的。
In the present contribution numerical stress analyses are presented at static and cyclic loads for the fracture mechanical assessment of railway wheels made of austempered ductile iron (ADI) with graphite nodules. The emphasis is placed on the safe dimensioning of the ADI wheel against fracture and fatigue crack growth. Therefore a linear elastic fracture mechanical analysis is carried out assuming hypothetical crack-like defects at exposed places. The assessment rests on fracture mechanical strength parameters of the ADI material, determined experimentally under static and cyclic loading.