- Author
- Yancey, C. W. C.
- Title
- Transportation, Handling and Field Service Loads for Air Mobility Shelter Systems. Final Report.
- Coporate
- National Bureau of Standards, Washington, DC
- Sponsor
- Civil and Environmental Engineering Development Agency, Tyndall AFB, FL
- Report
- NBSIR 77-1254, July 1977,
- Distribution
- Available from National Technical Information Service
- Keywords
- portable shelters; airmobile operations; transportation; trucks; aircraft; railroad cars; fork trucks; dynamic loads; gust loads; probability distribution functions
- Abstract
- To fulfill one of the prerequisites for establishing design criteria for military field shelters, transportation, handling and field service load data are presented. An extensive literature search was conducted to determine the magnitude and frequencies of shock and vibration responses produced by railroad, road and air cargo vehicles and by devices commonly used in handling field shelters. Summary data, extracted from field study reports, are presented in the form of acceleration versus frequency diagrams. The acceleration values can be used to compute an Equivalent Static Force input for the design and analysis of shelter models. The probabilities of occurrence of the acceleration amplitudes generated by the three transportation modes are indicated in cases where data reduction included statistical analyses. Sources of the dynamic load data included flatbed trucks, propeller and jet airplanes, helicopters, railroad flatcars and forklift trucks. Where possible, the shock and vibration data used in presenting the summary diagrams were restricted to that obtained from tests involving military vehicles commonly used to transport shelters. Recommendations are presented for the selection of static design loads to account for gravity, snow, ice and wind effects.