Impact Burial of Cylinders in Soft Marine Sediments

This paper presents results of experimental deployment of a large instrumented cylinder of variable nose geometry and center of mass offset. Data on three tests series in the Gulf of Mexico are presented and analyzed statistically. The stochastic nature of the problem of the cylinder tree-falling th...

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Bibliographic Details
Main Authors: Abelev, A V, Valent, P J
Format: Report
Language:English
Subjects:
BURIED OBJECTS
COMPONENT REPORTS
CYLINDRICAL BODIES
DATA ACQUISITION
DETERMINANTS(MATHEMATICS)
Guided Missile Traj, Accuracy and Ballistics
IMPACT PREDICTION
OCEAN BOTTOM
PE62435N
SEDIMENTS
SIMULATION
STATISTICS
Statistics and Probability
SYMPOSIA
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Summary:This paper presents results of experimental deployment of a large instrumented cylinder of variable nose geometry and center of mass offset. Data on three tests series in the Gulf of Mexico are presented and analyzed statistically. The stochastic nature of the problem of the cylinder tree-falling through water is outlined and described as an input to the current impact burial prediction package. This predictive package is analyzed in deterministic and stochastic Monte-Carlo frameworks, utilizing the experimentally developed statistical description of all the model input parameters, including the environmental, pertaining to the strength of the sediments, and dynamic, describing the velocities and orientations of the cylinder on impact with the sediment. Significance of the center of mass offset on the behavior of the cylinder is underlined. The importance of accurate knowledge of the sediment shear strength is stressed, as an important factor in predicting penetration burial of large cylinders. The original document contains color images. Presented at the ASCE Conference, Civil Engineering in the Oceans 6, held in Baltimore, MD on 20-22 Oct 2004. Pub.in Proceedings of ASCE Conference, Civil Engineering in the Oceans 6, p1-15 Oct 2004.