Accession Number:

ADA276835

Title:

Nonlinear Dynamic Analysis of Frangible Nosecap for Vertical Launch Antisubmarine Rocket (VLA)

Descriptive Note:

Professional paper

Corporate Author:

NAVAL COMMAND CONTROL AND OCEAN SURVEILLANCE CENTER RDT AND E DIV SAN DIEGO CA

Personal Author(s):

Report Date:

1994-02-01

Pagination or Media Count:

31.0

Abstract:

Described here is the application of a nonlinear finite element analysis FEA technique to predict the structural behaviors for a class of brittle materials that shows near-complete brittleness when loaded in tension, but exhibits some ductility when compressed. An ABAQUS constitutive model, consisting of an isotropically hardening yield surface, which is active when the stress state is dominantly compressive, and an independent crack detection surface to determine if a point in the material fails by cracking in tension, is employed to simulate the failure of the brittle material. The application of the technique to determine if a potential frangible nosecap design of the Vertical Launch Antisubmarine Rocket VIA would break up as intended upon water impact for a given entry condition is presented as an example.

Subject Categories:

  • Guided Missile Reentry Vehicles
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE