Performance of Soils under Track Loads: Report 1. Model Track and Test Program.
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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The introductory report reviews approaches taken by major investigators of the soil-tract system and describes in detail the facilities, techniques, and long-range program that the U.S. Army Engineer Waterways Experiment Station will use to develop a comprehensive, quantitative description of the behavior of soils under track loads. The report also includes a comprehensive list of definitions of mobility terms applicable to the soil-track system. The laboratory model track to be used in the program is a fairly large- scale single-track system designed for use in a dynamometer carriage-soil bin arrangement. The system is extremely versatile and can be adjusted as necessary to evaluate the many variables that influence straight-line track performance in soil. Initially, the model track will be used to determine the primary independent parameters for tracks operating in air-dry sand. Field tests are conducted to determine to what extent laboratory-developed track performance prediction terms must be modified to predict in-the-field performance. Appendix A describes the Plackett-Burman test design, which will be used to identify the most important variables of the system with a minimum of testing. Appendix B presents the Waterways Experiment Station mobility index formulas for tracked vehicles. Author
- Soil Mechanics