| Title | Program Multi - A Multi-purpose Program for Computing and Graphing Roots and Values for Any Real Function -- Users/Programmers Manual |
|---|---|
| Record ID | 49682 |
| Personal Name Creator |
Brantman, Russel |
| Source | 56p. in various pagings |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.) |
| Corporate Contributor |
United States. Department of Transportation. Federal Railroad Administration. Office of Research and Development |
| Publisher | United States. Department of Transportation. Federal Railroad Administration |
| Publication Date | 19760501 |
| Language | English |
| Abstract | As part of its activity under the Rail Equipment Safety Project, computer programs for track/train dynamics analysis are being developed and modified. As part of this effort, derailment behavior of trains negotiating curves under buff or draft has been investigated. To determine how critical car and train parameters affect actual stability of various train buckling modes, a generalized multi-purpose computer programs has been developed that can be used to compute and graph cross sections of any surface in space, or to compute and graph the roots of any equation and any function of these roots. It can be used for a variety of applications, including the graphing of multi-valued functions whose branches are not known beforehand. This capability is unique among graphing programs, and it greatly facilitates that analysis of any system with multiple equilibrium branches. The program is especially suited for computing the branches and investigating the stability of nonlinear finite-degree of freedom systems subjected to static loads. The program is oriented towards systems with one or two degrees of freedom, but it can also handle additional degrees of freedom and any number of parametric variables. |
| Rosap ID | dot:11116 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/11116 |
| TRT Terms | Computer graphics; Computer programs; Derailments; Mathematical analysis; Mechanical stability; Steering; Train operations; Train track dynamics |
| Classification | NTL - RAIL TRANSPORTATION - RAIL TRANSPORTATION; NTL - RAIL TRANSPORTATION - Rail Planning and Policy; NTL - RAIL TRANSPORTATION - Rail Safety |
| Geographical Coverage |
United States |
| Report Number | FRA/OR&D-76-143; DOT-TSC-FRA-76-1 |
| Resource type | Manual |
| URL | https://ntlrepository.blob.core.windows.net/lib/49000/49600/49682/DOT-TSC-FRA-76-1.pdf |
| Format | |
| Database | NTL Digital Repository |