Accession Number:

ADA024052

Title:

Dynamic Response of a Horizontally Buried Cylinder above a Soil/Rock Interface Results of a Finite-Element Analysis.

Descriptive Note:

Final rept. Sep 73-Sep 74,

Corporate Author:

CIVIL ENGINEERING LAB (NAVY) PORT HUENEME CALIF

Personal Author(s):

Report Date:

1976-03-01

Pagination or Media Count:

40.0

Abstract:

Static and dynamic two-dimensional finite element computer structural analyses were performed on cylinders, horizontally buried above a rigid concrete bottom simulating a soilrock interface, for correlation with laboratory experimental test data. Both linear and nonlinear constitutive models were used to mathematically describe the behavior of the soil medium. A mesh parameter study was performed to optimize mesh size and time increment without degradation of the results. The computer results compared favorably with the experimental data. The reflection of a dynamically applied surface load from the rigid bottom caused soil stress increases of more than twice the incident stress level. These increases were transmitted directly to the cylinder in the form of increased thrusts and moments. Author

Subject Categories:

  • Physical and Dynamic Oceanography
  • Numerical Mathematics
  • Computer Programming and Software
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE