NOVA-2 -- A Digital Computer Program for Analyzing Nuclear Overpressure Effects on Aircraft. Part 1. Theory

Abstract

NOVA-2 (Nuclear Overpressure Vulnerability Analysis, Version 2) is an updated version of NOVA, a FORTRAN-4 digital computer program for calculating the response of individual structural elements of aircraft, such as stringers, frames and panels, exposed to the transient pressure loading associated with the blast wave from a nuclear explosion. The updated version extends the capability of NOVA to analyze rib elements, frames with variable cross section, and offers a choice of clamped, simply supported or free edge boundary conditions. For inelastic structural response, a much improved elastic-plastic model for material behavior is provided. Also added to NOVA is the REFRA near-ground reflections model for blast waves. The program still provides the overall capability to analyze multilayered beam and panel elements exposed to a steady- state subsonic or supersonic aerodynamic preload, followed by a dynamic blast wave. A critical slant range is automatically determined in an iteration where damage criteria (specified on a probabilistic basis) are compared with the structural response.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1976
Accession Number
ADA029388

Entities

People

  • Lawrence J. Mente
  • William N. Lee

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Programs
  • Dynamic Response
  • Elastic Properties
  • Flight Speeds
  • Fluid Dynamics
  • Geometry
  • Mach Number
  • Mechanics
  • Modulus Of Elasticity
  • Numerical Analysis
  • Physical Properties
  • Pressure Distribution
  • Stress Strain Relations
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Computer Science.
  • Explosive Engineering.
  • Structural Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow