STRENGTHS OF BODIES OF PASSENGER COACHES. CALCULATION METHOD
The present report shows that it is possible, to a certain extent, to calculate very closely the stresses in the various sections of a coach body which are not influenced by secondary phenomena. It will however only be possible to reconsider the basic conception of a coach body and to indicate the possibility of new improvements when we have acquired sufficient experiences from the calculation and measurement of a large number of coach bodies already existing or under construction. One will then see the extent of the extensions to be effected upon the calculation method in order to be able to introduce into it, at least partly, the additional stresses which are produced at certain singular points. In those cases where this will not be possible and as far as the divergencies between calculation and measurements will remain systematically comparable, empirical coefficients will be applicable. The chosen calculation method should also enable the longitudinal flexion and the natural frequency of the coach body to be determined. Up to present, we have however not succeeded in obtaining the desired values whilst starting from the purely theoretical results of the calculation of the stresses. This concerns a case where rightly the empirical coefficients should enable us to obtain, in due course, very close values. Concluding, the method explained in the present report constitutes a first step towards the solution of the problem to be solved. It affords, already now, the possibility of calculating numerous coach bodies. When these coaches are parallelly submitted to static load tests, the comparison of the results of these tests with those obtained from the calculation should make it possible to refine progressively the method chosen until it has become an efficacious tool for the research institutes.
- Restrictions on the use of this document are contained in the explanatory material.
International Union of RailwaysOffice of Research and Experiments
- Publication Date: 1962-10
- Features: Appendices;
- Pagination: 27 p.
- TRT Terms: Computer programs; Data processing; Guided missiles; Motor vehicle bodies; Passenger cars; Static tests; Structural analysis; Tests; Vehicle design
- Old TRIS Terms: Car body; Car design; Monocoque construction; Question b7
- Subject Areas: Design; Railroads;
- Accession Number: 00053105
- Record Type: Publication
- Source Agency: International Union of Railways
- Report/Paper Numbers: B7/RP 4/E Intrm Rpt.
- Files: TRIS
- Created Date: Jul 8 1994 12:00AM