ASME RT-2:2008 pdf free download

ASME RT-2:2008 pdf free download.Safety Standard for Structural Requirements for Heavy Rail Transit Vehicles.
ASME RT-2 applies to carbodies of newly constructed heavy rail transit vehicles for transit passenger service in North America. It defines requirements for the incorporation of passive safety design concepts related to the performance of the carbody of heavy rail transit vehicles in conditions such as collisions, so as to enhance passenger safety, and limit and control damage. This Standard does not cover light rail vehicles, automated people movers, and freight, commuter, high- speed, or any other rail vehicles under the jurisdiction of the Federal Railroad Administration.
1.2 Subjects Not Addressed by This Standard
There are several issues related to safety not addressed, such as, but not limited to
(a) structural repairs
(b) fatigue
(C) corrosion
(d) fire protection (NFPA 130)
(e) interior vehicle design
(f) emergency egress from vehicle (NFPA 130)
1.3 Effective Date
This Standard applies to carbodies of newly constructed heavy rail transit vehicles for transit passenger service in North America ordered 180 days following the date of issuance of this Standard by the Standards Committee and ASME.
2 DEFINITIONS
This Standard relies, where practical, on terms already in use by ASME, the American Public Transportation Association (APTA), and the Institute of Electrical arid Electronics Engineers (IEEE). For the purposes of this Standard, the following definitions apply:
anticlin,ber: a structural member located at each end of the vehicle, used to engage the anticlimber of an oppos ing or otherwise coupled vehicle to resist relative vertical travel between the two carbodies during a collision.
antitelescoping plate: a single structural member that spans the full width of the carbody at the top of the end frame, that is attached to the tops of the collision
The report shall include a description of the model in sufficient detail to show that it is appropriate for the application. This shall include, as a minimum, descriptions of the structural elements and restraints, and the conditions of the simulation. It shall also include the output of the simulation to verify that the relevant requirements of this Standard and other specified criteria, including force displacement plots, and an itemization of energy absorbed, have been met.
10 TESTS
10.1 Objectives
Certain proof of design tests shall be performed in order to demonstrate the strength and stability required by this Standard. It is not necessary to carry out all tests if there are appropriate verification data in existence from previous tests on a similar structure and correlation between the test and calculation has been established. Tests shall be carried out to verify any significant changes to the design or to the performance requirements. There is no need to repeat the tests if the production location is later changed, provided that there is no significant change in the design or manufacturing process of the carbody
The specific objectives of the tests are to verify the strength of the carbody when subjected to the specified loads, to verify that no permanent deformation is present after removal of specified loads, and to validate analytic models and determine the accuracy of the analyses for load cases not tested. The test program shall comprise, as appropriate, the static simulation of selected design cases, measurements of actual stresses with electric resistance strain gauges or other suitable techniques, and measurement of the structural deformation under loads.
10.2 General
One of the first carbodies produced shall be tested to verily compliance of the design of the carbody with this Standard. The carbody shall be structurally complete, including flooring if used as part of the primary carbody structure, hut shall exclude such items as exterior and interior trim, windows, doors, seats, lights, insulation, interior lining, or any other materiaLs that will obscure any structural member of the carhody from view. Underfloor, roof, and ceiling-mounted apparatus shall be installed or equivalent weights distributed at their respective locations. If weights are used, attachment fasteners shall duplicate the proposed designs.
For any portion of the design that is based on a service proven vehicle, data from previous tests to satisfy the corresponding portion of these requirements may be provided.