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    <title>Transport Research International Documentation (TRID)</title>
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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>ANALYTICAL INVESTIGATION OF MAXIMUM LADING END-WALL FORCES FROM VARIOUS INPUT FORCE PULSE SHAPES</title>
      <link>https://trid.trb.org/View/164757</link>
      <description><![CDATA[The maximum lading end-wall forces resulting from five variously shaped input pulses in a struck railroad freight car were analyzed.  The analytical parameters included lading flexibility and looseness, and coulombic floor friction.  A unique computer program was developed to handle the mathematical non-linearities, and selected results have been compared with those obtained from two alternate methods of solution.]]></description>
      <pubDate>Fri, 12 Jun 1981 00:00:00 GMT</pubDate>
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      <title>TRAIN ACTION MEASUREMENTS IN THE TROPICANA UNIT TRAIN</title>
      <link>https://trid.trb.org/View/18312</link>
      <description><![CDATA[The extensive test program conducted with the Tropicana unit train operation has led to a better understanding of train dynamics, train handling procedures, and the required in-train characteristics of hydraulic end-of-car units. Results of the test with a conventional gear train containng a group of 100-ton cars have shown the presence of train action forces in the 300,000- to 400,000-lb range. The magnitude of train action forces are dependent to a large degree upon individual car weights.  As the car weights increase, the dynamic force levels increase.]]></description>
      <pubDate>Mon, 16 Aug 1976 00:00:00 GMT</pubDate>
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      <title>ELASTIC SYSTEMS FOR TRACTION AND SHOCK GEAR (SIDE BUFFERS AND CENTER BUFFERS). SPECIFICATION LEAFLET FOR ELASTIC SYSTEMS. PART 2: COMBINED HYDRAULIC SYSTEMS: GAS AND MECHANICAL ELASTIC ELEMENTS. PART 3: ELASTOMER ELASTIC SYSTEMS WITH HYDROSTATIC COMPRESSION</title>
      <link>https://trid.trb.org/View/14852</link>
      <description><![CDATA[The first main part of the report comprises the general specification containing the technical conditions for the elastic systems for goods wagons equipped with automatic couplers and belonging to the UIC and OSJD member administrations.  The second part covers the special specifications applicable to the UIC member administrations (except those who are also members of OSJD), as well as comments on the factors on which the special specification conditions were based.]]></description>
      <pubDate>Thu, 06 Mar 1975 00:00:00 GMT</pubDate>
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      <title>ELASTIC SYSTEMS FOR TRACTION AND SHOCK GEAR (SIDE BUFFERS AND CENTER BUFFERS). SPECIFICATION LEAFLET FOR ELASTIC SYSTEMS. PART 1: ELASTIC SYSTEMS WHOSE SPRING FORCE IS DEPENDENT CHIEFLY ON COMPRESSION (LINEAR CHARACTERISTICS)</title>
      <link>https://trid.trb.org/View/14851</link>
      <description><![CDATA[The first main part of the report comprises the general specification containing the technical conditions for the elastic systems for goods wagons equipped with automatic couplers and belonging to the UIC and OSJD member administrations.  The second part covers the special specification applicable to the UIC member administrations (with the exception of member administrations who are also members of the OSJD) as well as comments on the factors on which these specification conditions were based.]]></description>
      <pubDate>Thu, 27 Feb 1975 00:00:00 GMT</pubDate>
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      <title>LIMITING PERFORMANCE OF SHOCK ABSORBERS IN FREIGHT CARS</title>
      <link>https://trid.trb.org/View/8687</link>
      <description><![CDATA[The problem of determining the limiting performance of a freight car shock absorber (cushion) in protecting ladings under crash considitions is considered.  This work differs from the usual approach in that rather than analyzing (optimizing) a specific absorber configuration, e.g., prescribed set of springs and dashpots, the absolute optimum absorber behavior is computed regardless of configuration.  For the problem treated in detail here, performance is measured in terms of peak force transmitted to the lading for a specified bound on cushion travel distance.  The limiting performance problem is formulated as a linear programming problem.  Numerical examples are included.]]></description>
      <pubDate>Sat, 15 Jun 1974 00:00:00 GMT</pubDate>
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