Publication detail
DETERMINATION OF RESIDUAL FATIGUE LIFE OF RAILWAY WHEELSET
POKORNÝ, P. NÁHLÍK, L. ŠEVČÍK, M. HUTAŘ, P.
Czech title
Stanovení zbytkové únavové životnosti železničních náprav
English title
DETERMINATION OF RESIDUAL FATIGUE LIFE OF RAILWAY WHEELSET
Type
abstract
Language
en
Original abstract
The paper deals with an estimation of residual fatigue life of railway wheelset. In general the railway wheelsets can include some cracks. Some of them could be dangerous for the safe operation of the train. So, knowledge of the cracks behaviour during service of the train is necessary. For a conservative calculation it is considered an existing initial crack in dangerous place of railway axle. Numerical calculations simulating a growing crack take into account real loading spectrum and two most common materials EA1N, EA4T using for railway axles. Special attention is devoted to the influence of order of loading cycles on residual fatigue life of railway axle. This calculation could be useful for establishing of service intervals (revealing the cracks before fatigue fracture).
Czech abstract
Rozšířený abstrakt na konferenci AM 2013: Práce se zabývá odhadem zbytkové únavové životnosti železničního dvojkolí.
English abstract
The paper deals with an estimation of residual fatigue life of railway wheelset. In general the railway wheelsets can include some cracks. Some of them could be dangerous for the safe operation of the train. So, knowledge of the cracks behaviour during service of the train is necessary. For a conservative calculation it is considered an existing initial crack in dangerous place of railway axle. Numerical calculations simulating a growing crack take into account real loading spectrum and two most common materials EA1N, EA4T using for railway axles. Special attention is devoted to the influence of order of loading cycles on residual fatigue life of railway axle. This calculation could be useful for establishing of service intervals (revealing the cracks before fatigue fracture).
Keywords in Czech
zbytková únavová životnost, železniční dvojkolí, EA1N, EA4T, únavová trhlina
Keywords in English
residual fatigue life, railway wheelset, EA1N, EA4T, fatigue crack
Released
15.04.2013
Book
15th International Conference, APPLIED MECHANICS 2013