A Framework for an Optimum Synthesis Environment for the Hydrocode EPIC-2.

Abstract

The present study seeks to examine the efficacy of a mathematical nonlinear programming approach for the optimal synthesis of structures subjected to high strain-rate plastic deformations. Efficient methods of constraint representation are implemented to reduce the dimensionality of the optimization problem, where the latter is an outcome of the transient nature of the response functions. A Lagrangian discretized domain approach is used for the solution of the equations of motion and is coupled to a feasible usable search direction algorithm to form an optimization programming system. The optimum sizing of a projectile shell for survival in a high velocity impact, provides the test problem for this study. A stepwise linearization of the design space is attempted for computational efficiency, with encouraging results.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1986
Accession Number
ADA173974

Entities

People

  • Prabhat Hajela

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Algorithms
  • Computer Programming
  • Computer Programs
  • Deformation (Mechanics)
  • Dynamic Response
  • Equations
  • Equations Of Motion
  • Explosive Charges
  • Explosives
  • Failure Mode And Effect Analysis
  • Munitions
  • Nonlinear Programming
  • Optimization
  • Plastic Deformation
  • Projectiles
  • Strain Rate

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Systems Analysis and Design

Technology Areas

  • Space