Accession Number:

ADA063733

Title:

Study and Parametric Analysis of Trafficability, Running Gear, and Stability Considerations for Nearshore, Bottom-Crawling Vehicles.

Descriptive Note:

Final rept. Feb 77-Feb 78,

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s):

• Turnage,Gerald W.
• Seabergh,William C.

Report Date:

1978-12-01

Pagination or Media Count:

188.0

Abstract:

The Surfzone Transition Analytical Methodology STAM is a computerized mathematical model that was developed to predict the trafficability and stability performance of bottom-crawling vehicles operating in the nearshore region from shoreline to 150-ft water depth. STAM input requires detailed mathematical descriptions of a the vehicles design characteristics, b its performance requirements, and c the specific nearshore environment. From these descriptions, STAM predicts a vehicle trafficability performance in terms of vehicleobstacle interference and vehicle ability to negotiate soft soil, develop drawbar pull, and maintain tractive force while operating on either a fine-grained or a coarse-grained ocean bottom, and b vehicle stability performance in terms of vehicle resistance to lateral and to longitudinal overturn, plus vehicle ability to maintain forward motion and to resist side sliding. STAM predicts the performance of only two-track, single-chassis bottom-crawling vehicles because this well-developed chassisrunning gear combination was judged most suitable for near-future nearshore operations.

Descriptors:

• *MATHEMATICAL MODELS
• *COASTAL REGIONS
• *UNDERWATER VEHICLES
• *TRACKED VEHICLES
• COMPUTERIZED SIMULATION
• PERFORMANCE(ENGINEERING)
• EXPERIMENTAL DESIGN
• MATHEMATICAL PREDICTION
• GEARS
• OCEAN BOTTOM
• OCEAN BOTTOM SOILS
• CHASSIS
• SEAFLOOR SPREADING
• UNDERWATER EQUIPMENT
• TRAFFICABILITY

Subject Categories:

• Statistics and Probability
• Marine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE