A Comprehensive Analysis Algorithm for Ablation, Temperature Fields, and Thermal Stresses of Carbon-Based Nosetip Materials,

Abstract

This paper provides the principles for calculations of ablation, conduction, and thermal stresses of flight vehicles in a re-entry environment, as well as a few techniques beyond these principles. In regards to the chemical reactions of carbon-based material ablative surfaces, a selective calculation result is used to simplify the thermochemical ablation calculations. A spaced and non-spaced three-level explicit difference scheme was chosen for use in the calculation of temperature fields. Thermal stresses were calculated using the finite element method within the hypothesis of linear elasticity, based on the incomplete principles of variational potential energy, wherein it is possible to calculate the influences of many different types of displacement boundary conditions. During compilation of these comprehensive analysis procedures, an automated mesh dividing technique was found which has application in selective calculations. (Translations; China; Chinese language).

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Document Details

Document Type
Technical Report
Publication Date
Nov 06, 1985
Accession Number
ADA162359

Entities

People

  • Zhenzhong Huang

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • C4I
  • Weapons Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Boundaries
  • Conduction (Heat Transfer)
  • Coordinate Systems
  • Difference Equations
  • Differential Equations
  • Elastic Properties
  • Equations
  • Finite Element Analysis
  • Foreign Technology
  • Heat Shields
  • Materials
  • Mechanics
  • Thermal Conductivity
  • Thermal Stresses
  • Thermodynamics
  • Translations

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Dynamics.
  • Reinforced Composite Materials

Technology Areas

  • Space