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RESEARCH PAPERS: Offshore Mechanics

Response of Dolos Concrete Armor Units to Impact Loads

[+] Author and Article Information
J. W. Tedesco

Civil Engineering Department, Auburn University, Auburn, AL 36849

P. B. McGill

Metallurgy Research Branch, George C. Marshall Space Flight Center, National Aeronautics and Space Administration, Marshall Space Flight Center, AL 35812

W. G. McDougal

Ocean Engineering Program, Civil Engineering Department, Oregon State University, Corvallis, OR 97331

J. Offshore Mech. Arct. Eng 113(4), 286-291 (Nov 01, 1991) (6 pages) doi:10.1115/1.2919932 History: Received November 30, 1990; Revised June 27, 1991

Abstract

A finite element analysis is conducted to determine the critical impact velocities for concrete dolos. The model formulation includes deformations at the contact surface and nonlinear material properties. Two dolos orientations are considered: vertical fluke seaward and horizontal fluke seaward. In both cases, the larger units fail at lower angular impact velocities. It is also shown that doubling the concrete strength increases the impact resistance by approximately 40 percent.

Copyright © 1991 by The American Society of Mechanical Engineers
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