SU1164579A1 - Method of fatigue testing of rails - Google Patents
Method of fatigue testing of rails Download PDFInfo
- Publication number
- SU1164579A1 SU1164579A1 SU833602393A SU3602393A SU1164579A1 SU 1164579 A1 SU1164579 A1 SU 1164579A1 SU 833602393 A SU833602393 A SU 833602393A SU 3602393 A SU3602393 A SU 3602393A SU 1164579 A1 SU1164579 A1 SU 1164579A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- rail
- rails
- bending stresses
- load applied
- rail section
- Prior art date
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
СПОСОБ УСТАЛОСТНЫХ ИСПЫТАНИЙ РЕЛЬСОВ, заключающийс в том, что к отрезку рельса, уложенному на опоры, прикладывают вертикальные циклические нагрузки, вызыва контактные напр жени и напр жени изгнба, отличающийс тем, что, с целью приближени условий испытани рельса к Эксплуатационным , контактные напр жени вызывают асимметричной нагрузкой, приложенной к отрезку рельса в зоне его опирани на опору симметрично последней, а напр жени изгиба вызывают асимметричной нагрузкой , приложенной на конце отрезка рельса, при этом указанные нагрузки измен ют синфазно и синхронно.A METHOD FOR CARRYING OUT TESTS OF RAILS, namely, vertical cyclic loads are applied to a rail section laid on supports, causing contact voltages and bending stresses, in order to approximate the test conditions of the rail to an asymmetrical load applied to the rail section in the area of its bearing on the support symmetrically last, and the bending stresses are caused by the asymmetric load applied on the end of the rail section, with e load is varied synchronously and in phase.
Description
О5 4 СП O5 4 SP
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Изобретение относитс к испытани м материалов и деталей машин на усталость и может быть использовано преимущественно при создании и расчете железнодорожных рельсов т желых типов.The invention relates to the testing of materials and machine parts for fatigue and can be used primarily in the creation and calculation of heavy-duty railway rails.
Цель изобретени - приближение условий испытани рельса к эксплуатационным .The purpose of the invention is to approximate rail test conditions to operational ones.
Способ усталостных испытаний осуществл ют следующим образом.The fatigue test method is carried out as follows.
На два отрезка рельса экспериментального железнодорожного пути устанавливают недвижущуюс , шарнирно закрепленную вагонную тележку. При этом вертикальные осевые линии колесных пар совпадают с вертикальными ос ми симметрии сеченийAn immovable, hinged carriage carriage is installed on two rail sections of an experimental railroad track. At the same time, the vertical axial lines of the wheel pairs coincide with the vertical axes of symmetry of the sections
крайних подрельсовых опор. Контактные напр жени вызывают приложением асимметричной циклической нагрузки Q к раме тележки, передаваемой колесами вагонной тележки на отрезки рельсов в зонах их опирани на опоры. Напр жени изгиба обеспечивают приложением вертикальных асимметричных циклических нагрузок Р к концам отрезков рельсов посредством гидравлических пульсаторов.extreme rail supports. Contact stresses are caused by the application of an asymmetric cyclic load Q to the frame of the carriage, transmitted by the wheels of the carriage carriage to the segments of the rails in the areas of their bearing on the supports. Bending stresses are provided by applying vertical asymmetric cyclic loads P to the ends of the rail sections by means of hydraulic pulsators.
Испытани производ т при синфазном и синхронном изменении циклических нагрузок Q и Р с частотами 15-20 Гц при асимметрии цикла Рб 0,1, характерной дл р да условий эксплуатации.The tests are carried out with in-phase and synchronous change of cyclic loads Q and P with frequencies of 15-20 Hz with a cycle asymmetry of RB 0.1, characteristic of a number of operating conditions.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU833602393A SU1164579A1 (en) | 1983-03-17 | 1983-03-17 | Method of fatigue testing of rails |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU833602393A SU1164579A1 (en) | 1983-03-17 | 1983-03-17 | Method of fatigue testing of rails |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1164579A1 true SU1164579A1 (en) | 1985-06-30 |
Family
ID=21067375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU833602393A SU1164579A1 (en) | 1983-03-17 | 1983-03-17 | Method of fatigue testing of rails |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1164579A1 (en) |
-
1983
- 1983-03-17 SU SU833602393A patent/SU1164579A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Испытани деталей машин на прочность. Сборник статей. Под ред. С. В. Серенсена, 1960, с. 167-169. * |
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