Accession Number:

ADA196696

Title:

Surface Temperature Prediction of a Bridge for Tactical Decision Aide Modelling

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1988-01-01

Pagination or Media Count:

79.0

Abstract:

The focus of this research is to develop predictive techniques for determining the surface temperature of bridge type structures using known or assumed weather data. This technique would be used in Tactical Decision Aide TDA models. TDAs are used to provide military field commanders information about the apparent contrast between a target and its background. Having this information before deployment increases the effectiveness of infrared guided missiles, or helps the field commander make an informed decision about the type of weapons to use. The model for this effort was one dimensional Runge-Kutta analysis of the heat flow equations. However, these predictions were typically for small objects such as vehicles or concrete bunkers. Modelling large objects such as bridges presents certain difficulties as noted by Goldman and coworkers. This effort concentrated on predicting the internal temperature profile of a bridge for the purpose of stress analysis. However, the method used is directly related to this effort because the internal temperature profile is dependent on the surface temperature. Thepchatri and coworkers used two types of models a one dimensional finite difference form of the heat flow equation, and a two dimensional finite element analysis of the heat flow.

Subject Categories:

  • Structural Engineering and Building Technology
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE