Wright-patterson Air Force Base Dynamic Terrain Inputs to Predict Structural Integrity of Ground Vehicles
نویسنده
چکیده
1 6 Abafact This report presents a study and evaluation of the technology and methodologies available for predicting the response of mobile ground equipment to dynamic input from terrain roughness. The purpose of the report is to develop a technical foundation for the subsequent formulation of military specifications for durability of ground vehicles used at air bases. The report reviews the techniques and methods that have been used successfully to (1) model and analyze vehicle response to road roughness, (2) characterize pavemznt inputs to various vehicle models, (3) develop a standard roughness scale-the International Roughness Index (IRI), and (4) measure pavement profile, road roughness, and vehicle response. Specialized instruments are described for the measurement of road profile. The modeling of road inputs is further developed, based in part on extensive measured profile data. In particular, the correlation between the left-and right-hand wheeltrack profiles is modeled to match actual road data. The report concludes by relating technology and methods to the Air Force environment. A standard road representation is tentatively proposed, with several types of roughness that are most relevant for predicting vehicle response and possible failure. Considerations are given for measuring profile, adopting a roughness index, and validating vehicle analyses.
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